diff --git a/backend/src/controllers/issue.controller.ts b/backend/src/controllers/issue.controller.ts
index 302267f..2f53e67 100644
--- a/backend/src/controllers/issue.controller.ts
+++ b/backend/src/controllers/issue.controller.ts
@@ -11,7 +11,34 @@ class IssueController {
       const userId = req.user!.id;
       const groups: string[] = (req.user as any).groups || [];
       const canViewAll = permissionService.hasPermission(groups, 'issues:view_all');
-      const issues = await issueService.getIssues(userId, canViewAll);
+
+      // Parse filter query params
+      const filters: {
+        typ_id?: number[];
+        prioritaet?: string[];
+        status?: string[];
+        erstellt_von?: string;
+        zugewiesen_an?: string;
+      } = {};
+
+      if (req.query.typ_id) {
+        filters.typ_id = String(req.query.typ_id).split(',').map(Number).filter((n) => !isNaN(n));
+      }
+      if (req.query.prioritaet) {
+        filters.prioritaet = String(req.query.prioritaet).split(',');
+      }
+      if (req.query.status) {
+        filters.status = String(req.query.status).split(',');
+      }
+      if (req.query.erstellt_von) {
+        filters.erstellt_von = req.query.erstellt_von as string;
+      }
+      if (req.query.zugewiesen_an) {
+        filters.zugewiesen_an =
+          req.query.zugewiesen_an === 'me' ? userId : (req.query.zugewiesen_an as string);
+      }
+
+      const issues = await issueService.getIssues({ userId, canViewAll, filters });
       res.status(200).json({ success: true, data: issues });
     } catch (error) {
       logger.error('IssueController.getIssues error', { error });
@@ -34,7 +61,7 @@ class IssueController {
       const userId = req.user!.id;
       const groups: string[] = (req.user as any).groups || [];
       const canViewAll = permissionService.hasPermission(groups, 'issues:view_all');
-      if (!canViewAll && issue.erstellt_von !== userId) {
+      if (!canViewAll && issue.erstellt_von !== userId && issue.zugewiesen_an !== userId) {
         res.status(403).json({ success: false, message: 'Kein Zugriff' });
         return;
       }
@@ -69,7 +96,8 @@ class IssueController {
     try {
       const userId = req.user!.id;
       const groups: string[] = (req.user as any).groups || [];
-      const canManage = permissionService.hasPermission(groups, 'issues:manage');
+      const canEdit = permissionService.hasPermission(groups, 'issues:edit');
+      const canChangeStatus = permissionService.hasPermission(groups, 'issues:change_status');
 
       const existing = await issueService.getIssueById(id);
       if (!existing) {
@@ -78,19 +106,80 @@ class IssueController {
       }
 
       const isOwner = existing.erstellt_von === userId;
-      if (!canManage && !isOwner) {
+      const isAssignee = existing.zugewiesen_an === userId;
+
+      // Determine what update data is allowed
+      let updateData: Record<string, any>;
+
+      if (canEdit) {
+        // Full edit access
+        updateData = { ...req.body };
+        // Explicit null for unassign is handled by 'zugewiesen_an' in data check in service
+      } else if (canChangeStatus || isAssignee) {
+        // Can only change status (+ kommentar is handled separately)
+        updateData = {};
+        if (req.body.status !== undefined) updateData.status = req.body.status;
+      } else if (isOwner) {
+        // Owner without change_status: can only close own issue or reopen from erledigt
+        updateData = {};
+        if (req.body.status !== undefined) {
+          const newStatus = req.body.status;
+          if (newStatus === 'erledigt') {
+            updateData.status = 'erledigt';
+          } else if (newStatus === 'offen' && existing.status === 'erledigt') {
+            // Reopen: require kommentar
+            if (!req.body.kommentar || typeof req.body.kommentar !== 'string' || req.body.kommentar.trim().length === 0) {
+              res.status(400).json({
+                success: false,
+                message: 'Beim Wiedereröffnen ist ein Kommentar erforderlich',
+              });
+              return;
+            }
+            updateData.status = 'offen';
+          } else {
+            res.status(403).json({ success: false, message: 'Keine Berechtigung für diese Statusänderung' });
+            return;
+          }
+        } else {
+          // Owner trying to change non-status fields without edit permission
+          res.status(403).json({ success: false, message: 'Keine Berechtigung' });
+          return;
+        }
+      } else {
         res.status(403).json({ success: false, message: 'Keine Berechtigung' });
         return;
       }
 
-      // Owners without manage permission can only change status
-      const updateData = canManage ? req.body : { status: req.body.status };
+      // Validate: if setting status to 'abgelehnt', check if type allows it
+      if (updateData.status === 'abgelehnt' && existing.typ_id) {
+        if (!existing.typ_erlaubt_abgelehnt) {
+          res.status(400).json({
+            success: false,
+            message: 'Dieser Issue-Typ erlaubt den Status "Abgelehnt" nicht',
+          });
+          return;
+        }
+      }
+
       const issue = await issueService.updateIssue(id, updateData);
       if (!issue) {
         res.status(404).json({ success: false, message: 'Issue nicht gefunden' });
         return;
       }
-      res.status(200).json({ success: true, data: issue });
+
+      // Handle reopen comment (owner reopen flow)
+      if (isOwner && !canChangeStatus && req.body.status === 'offen' && existing.status === 'erledigt' && req.body.kommentar) {
+        await issueService.addComment(id, userId, `[Wiedereröffnet] ${req.body.kommentar.trim()}`);
+      }
+
+      // If kommentar was provided alongside a status change (not the reopen flow above)
+      if (req.body.kommentar && updateData.status && !(isOwner && !canChangeStatus && req.body.status === 'offen' && existing.status === 'erledigt')) {
+        await issueService.addComment(id, userId, req.body.kommentar.trim());
+      }
+
+      // Re-fetch to include any new comment info
+      const updated = await issueService.getIssueById(id);
+      res.status(200).json({ success: true, data: updated });
     } catch (error) {
       logger.error('IssueController.updateIssue error', { error });
       res.status(500).json({ success: false, message: 'Issue konnte nicht aktualisiert werden' });
@@ -111,8 +200,8 @@ class IssueController {
       }
       const userId = req.user!.id;
       const groups: string[] = (req.user as any).groups || [];
-      const canManage = permissionService.hasPermission(groups, 'issues:manage');
-      if (!canManage && issue.erstellt_von !== userId) {
+      const canDelete = permissionService.hasPermission(groups, 'issues:delete');
+      if (!canDelete && issue.erstellt_von !== userId) {
         res.status(403).json({ success: false, message: 'Keine Berechtigung' });
         return;
       }
@@ -139,7 +228,7 @@ class IssueController {
       const userId = req.user!.id;
       const groups: string[] = (req.user as any).groups || [];
       const canViewAll = permissionService.hasPermission(groups, 'issues:view_all');
-      if (!canViewAll && issue.erstellt_von !== userId) {
+      if (!canViewAll && issue.erstellt_von !== userId && issue.zugewiesen_an !== userId) {
         res.status(403).json({ success: false, message: 'Kein Zugriff' });
         return;
       }
@@ -170,12 +259,17 @@ class IssueController {
       }
       const userId = req.user!.id;
       const groups: string[] = (req.user as any).groups || [];
-      const canViewAll = permissionService.hasPermission(groups, 'issues:view_all');
-      const canManage = permissionService.hasPermission(groups, 'issues:manage');
-      if (!canViewAll && !canManage && issue.erstellt_von !== userId) {
-        res.status(403).json({ success: false, message: 'Kein Zugriff' });
+      const isOwner = issue.erstellt_von === userId;
+      const isAssignee = issue.zugewiesen_an === userId;
+      const canChangeStatus = permissionService.hasPermission(groups, 'issues:change_status');
+      const canEdit = permissionService.hasPermission(groups, 'issues:edit');
+
+      // Authorization: owner, assignee, change_status, or edit can comment
+      if (!isOwner && !isAssignee && !canChangeStatus && !canEdit) {
+        res.status(403).json({ success: false, message: 'Keine Berechtigung zum Kommentieren' });
         return;
       }
+
       const comment = await issueService.addComment(issueId, userId, inhalt.trim());
       res.status(201).json({ success: true, data: comment });
     } catch (error) {
@@ -183,6 +277,81 @@ class IssueController {
       res.status(500).json({ success: false, message: 'Kommentar konnte nicht erstellt werden' });
     }
   }
+
+  // --- Type management ---
+
+  async getTypes(_req: Request, res: Response): Promise<void> {
+    try {
+      const types = await issueService.getTypes();
+      res.status(200).json({ success: true, data: types });
+    } catch (error) {
+      logger.error('IssueController.getTypes error', { error });
+      res.status(500).json({ success: false, message: 'Issue-Typen konnten nicht geladen werden' });
+    }
+  }
+
+  async createType(req: Request, res: Response): Promise<void> {
+    const { name } = req.body;
+    if (!name || typeof name !== 'string' || name.trim().length === 0) {
+      res.status(400).json({ success: false, message: 'Name ist erforderlich' });
+      return;
+    }
+    try {
+      const type = await issueService.createType(req.body);
+      res.status(201).json({ success: true, data: type });
+    } catch (error) {
+      logger.error('IssueController.createType error', { error });
+      res.status(500).json({ success: false, message: 'Issue-Typ konnte nicht erstellt werden' });
+    }
+  }
+
+  async updateType(req: Request, res: Response): Promise<void> {
+    const id = parseInt(param(req, 'id'), 10);
+    if (isNaN(id)) {
+      res.status(400).json({ success: false, message: 'Ungültige ID' });
+      return;
+    }
+    try {
+      const type = await issueService.updateType(id, req.body);
+      if (!type) {
+        res.status(404).json({ success: false, message: 'Issue-Typ nicht gefunden' });
+        return;
+      }
+      res.status(200).json({ success: true, data: type });
+    } catch (error) {
+      logger.error('IssueController.updateType error', { error });
+      res.status(500).json({ success: false, message: 'Issue-Typ konnte nicht aktualisiert werden' });
+    }
+  }
+
+  async deleteType(req: Request, res: Response): Promise<void> {
+    const id = parseInt(param(req, 'id'), 10);
+    if (isNaN(id)) {
+      res.status(400).json({ success: false, message: 'Ungültige ID' });
+      return;
+    }
+    try {
+      const type = await issueService.deactivateType(id);
+      if (!type) {
+        res.status(404).json({ success: false, message: 'Issue-Typ nicht gefunden' });
+        return;
+      }
+      res.status(200).json({ success: true, data: type });
+    } catch (error) {
+      logger.error('IssueController.deleteType error', { error });
+      res.status(500).json({ success: false, message: 'Issue-Typ konnte nicht deaktiviert werden' });
+    }
+  }
+
+  async getMembers(_req: Request, res: Response): Promise<void> {
+    try {
+      const members = await issueService.getAssignableMembers();
+      res.status(200).json({ success: true, data: members });
+    } catch (error) {
+      logger.error('IssueController.getMembers error', { error });
+      res.status(500).json({ success: false, message: 'Mitglieder konnten nicht geladen werden' });
+    }
+  }
 }
 
 export default new IssueController();
diff --git a/backend/src/database/migrations/053_issues_rework.sql b/backend/src/database/migrations/053_issues_rework.sql
new file mode 100644
index 0000000..8560dbb
--- /dev/null
+++ b/backend/src/database/migrations/053_issues_rework.sql
@@ -0,0 +1,128 @@
+-- Migration 053: Issues rework
+-- 1. Fix update trigger bug (uses wrong column name)
+-- 2. Dynamic issue types table (issue_typen)
+-- 3. Migrate issues.typ → issues.typ_id
+-- 4. Permission rework: replace issues:manage with granular permissions
+
+-- ═══════════════════════════════════════════════════════════════════════════
+-- 1. Fix update trigger
+-- The old trigger calls update_aktualisiert_am() which sets NEW.aktualisiert_am,
+-- but issues table uses updated_at → crashes every UPDATE.
+-- ═══════════════════════════════════════════════════════════════════════════
+
+DROP TRIGGER IF EXISTS trg_issues_updated ON issues;
+
+CREATE OR REPLACE FUNCTION update_issues_updated_at()
+RETURNS TRIGGER AS $$
+BEGIN
+  NEW.updated_at = NOW();
+  RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER trg_issues_updated BEFORE UPDATE ON issues
+  FOR EACH ROW EXECUTE FUNCTION update_issues_updated_at();
+
+-- ═══════════════════════════════════════════════════════════════════════════
+-- 2. Dynamic types table
+-- ═══════════════════════════════════════════════════════════════════════════
+
+CREATE TABLE IF NOT EXISTS issue_typen (
+  id              SERIAL       PRIMARY KEY,
+  name            VARCHAR(100) NOT NULL,
+  parent_id       INT          REFERENCES issue_typen(id) ON DELETE CASCADE,
+  icon            VARCHAR(50)  DEFAULT NULL,
+  farbe           VARCHAR(20)  DEFAULT NULL,
+  erlaubt_abgelehnt BOOLEAN   NOT NULL DEFAULT true,
+  sort_order      INT          NOT NULL DEFAULT 0,
+  aktiv           BOOLEAN      NOT NULL DEFAULT true,
+  created_at      TIMESTAMPTZ  NOT NULL DEFAULT NOW()
+);
+
+CREATE INDEX IF NOT EXISTS idx_issue_typen_parent ON issue_typen(parent_id);
+
+-- Seed default types
+INSERT INTO issue_typen (id, name, parent_id, icon, farbe, erlaubt_abgelehnt, sort_order) VALUES
+  (1, 'Bug',                NULL, 'BugReport',    'error',  false, 1),
+  (2, 'Funktionsanfrage',   NULL, 'FiberNew',     'info',   true,  2),
+  (3, 'Sonstiges',          NULL, 'HelpOutline',  'action', true,  3)
+ON CONFLICT (id) DO NOTHING;
+
+-- Ensure sequence is past seeded IDs
+SELECT setval('issue_typen_id_seq', GREATEST((SELECT MAX(id) FROM issue_typen), 3));
+
+-- ═══════════════════════════════════════════════════════════════════════════
+-- 3. Migrate issues.typ column → typ_id FK
+-- ═══════════════════════════════════════════════════════════════════════════
+
+ALTER TABLE issues ADD COLUMN IF NOT EXISTS typ_id INT REFERENCES issue_typen(id) ON DELETE SET NULL;
+
+-- Migrate existing data
+UPDATE issues SET typ_id = 1 WHERE typ = 'bug'       AND typ_id IS NULL;
+UPDATE issues SET typ_id = 2 WHERE typ = 'feature'    AND typ_id IS NULL;
+UPDATE issues SET typ_id = 3 WHERE typ = 'sonstiges'  AND typ_id IS NULL;
+-- Fallback: anything unmapped → Sonstiges
+UPDATE issues SET typ_id = 3 WHERE typ_id IS NULL;
+
+-- Drop old constraint and column
+ALTER TABLE issues DROP CONSTRAINT IF EXISTS issues_typ_check;
+ALTER TABLE issues DROP COLUMN IF EXISTS typ;
+
+CREATE INDEX IF NOT EXISTS idx_issues_typ_id ON issues(typ_id);
+CREATE INDEX IF NOT EXISTS idx_issues_zugewiesen_an ON issues(zugewiesen_an);
+
+-- ═══════════════════════════════════════════════════════════════════════════
+-- 4. Permission rework
+-- Replace issues:manage with granular permissions
+-- ═══════════════════════════════════════════════════════════════════════════
+
+-- 4a. Find all groups that had issues:manage and give them the new permissions
+-- We use a temp table to store the groups that had manage
+CREATE TEMP TABLE IF NOT EXISTS _issues_manage_groups AS
+  SELECT authentik_group FROM group_permissions WHERE permission_id = 'issues:manage';
+
+-- 4b. Insert new permissions
+INSERT INTO permissions (id, feature_group_id, label, description, sort_order) VALUES
+  ('issues:change_status', 'issues', 'Status ändern',    'Status ändern und kommentieren',                               4),
+  ('issues:edit',          'issues', 'Bearbeiten',       'Issues bearbeiten (Titel, Beschreibung, Typ, Priorität, Zuweisung)', 5),
+  ('issues:edit_settings', 'issues', 'Einstellungen',    'Issue-Kategorien verwalten',                                    6),
+  ('issues:delete',        'issues', 'Löschen',          'Issues löschen',                                                7)
+ON CONFLICT (id) DO NOTHING;
+
+-- 4c. Grant all new permissions to groups that had manage
+INSERT INTO group_permissions (authentik_group, permission_id)
+  SELECT g.authentik_group, p.id
+  FROM _issues_manage_groups g
+  CROSS JOIN (VALUES
+    ('issues:view_all'),
+    ('issues:change_status'),
+    ('issues:edit'),
+    ('issues:edit_settings'),
+    ('issues:delete')
+  ) AS p(id)
+ON CONFLICT DO NOTHING;
+
+-- 4d. Remove old manage permission
+DELETE FROM group_permissions WHERE permission_id = 'issues:manage';
+DELETE FROM permissions WHERE id = 'issues:manage';
+
+DROP TABLE IF EXISTS _issues_manage_groups;
+
+-- 4e. Update permission_deps in app_settings JSON
+-- Remove old issues entries and add new ones
+UPDATE app_settings
+SET value = (
+  SELECT jsonb_strip_nulls(
+    (value::jsonb - 'issues:view_own' - 'issues:view_all' - 'issues:manage')
+    || '{
+      "issues:create": ["issues:view_own"],
+      "issues:view_all": ["issues:view_own"],
+      "issues:change_status": ["issues:view_all"],
+      "issues:edit": ["issues:view_all"],
+      "issues:delete": ["issues:view_all"],
+      "issues:edit_settings": ["issues:view_all"]
+    }'::jsonb
+  )::text
+  FROM app_settings WHERE key = 'permission_deps'
+)
+WHERE key = 'permission_deps';
diff --git a/backend/src/routes/issue.routes.ts b/backend/src/routes/issue.routes.ts
index 1d142f3..68ce20f 100644
--- a/backend/src/routes/issue.routes.ts
+++ b/backend/src/routes/issue.routes.ts
@@ -5,6 +5,42 @@ import { requirePermission } from '../middleware/rbac.middleware';
 
 const router = Router();
 
+// --- Type management routes (BEFORE /:id to avoid conflict) ---
+router.get(
+  '/typen',
+  authenticate,
+  issueController.getTypes.bind(issueController)
+);
+
+router.post(
+  '/typen',
+  authenticate,
+  requirePermission('issues:edit_settings'),
+  issueController.createType.bind(issueController)
+);
+
+router.patch(
+  '/typen/:id',
+  authenticate,
+  requirePermission('issues:edit_settings'),
+  issueController.updateType.bind(issueController)
+);
+
+router.delete(
+  '/typen/:id',
+  authenticate,
+  requirePermission('issues:edit_settings'),
+  issueController.deleteType.bind(issueController)
+);
+
+// --- Members route ---
+router.get(
+  '/members',
+  authenticate,
+  issueController.getMembers.bind(issueController)
+);
+
+// --- Issue CRUD ---
 router.get(
   '/',
   authenticate,
@@ -30,6 +66,12 @@ router.post(
   issueController.addComment.bind(issueController)
 );
 
+router.get(
+  '/:id',
+  authenticate,
+  issueController.getIssue.bind(issueController)
+);
+
 router.patch(
   '/:id',
   authenticate,
diff --git a/backend/src/services/issue.service.ts b/backend/src/services/issue.service.ts
index e830c87..62d8cea 100644
--- a/backend/src/services/issue.service.ts
+++ b/backend/src/services/issue.service.ts
@@ -1,21 +1,76 @@
 import pool from '../config/database';
 import logger from '../utils/logger';
 
-async function getIssues(userId: string, canViewAll: boolean) {
+interface IssueFilters {
+  typ_id?: number[];
+  prioritaet?: string[];
+  status?: string[];
+  erstellt_von?: string;
+  zugewiesen_an?: string;
+}
+
+interface GetIssuesParams {
+  userId: string;
+  canViewAll: boolean;
+  filters?: IssueFilters;
+}
+
+const BASE_SELECT = `
+  SELECT i.*,
+         it.name AS typ_name, it.icon AS typ_icon, it.farbe AS typ_farbe, it.erlaubt_abgelehnt AS typ_erlaubt_abgelehnt,
+         u1.name AS erstellt_von_name,
+         u2.name AS zugewiesen_an_name
+  FROM issues i
+  LEFT JOIN issue_typen it ON it.id = i.typ_id
+  LEFT JOIN users u1 ON u1.id = i.erstellt_von
+  LEFT JOIN users u2 ON u2.id = i.zugewiesen_an
+`;
+
+async function getIssues({ userId, canViewAll, filters }: GetIssuesParams) {
   try {
-    const query = `
-      SELECT i.*,
-             u1.name AS erstellt_von_name,
-             u2.name AS zugewiesen_an_name
-      FROM issues i
-      LEFT JOIN users u1 ON u1.id = i.erstellt_von
-      LEFT JOIN users u2 ON u2.id = i.zugewiesen_an
-      ${canViewAll ? '' : 'WHERE i.erstellt_von = $1'}
-      ORDER BY i.created_at DESC
-    `;
-    const result = canViewAll
-      ? await pool.query(query)
-      : await pool.query(query, [userId]);
+    const conditions: string[] = [];
+    const values: any[] = [];
+    let idx = 1;
+
+    if (!canViewAll) {
+      conditions.push(`(i.erstellt_von = $${idx} OR i.zugewiesen_an = $${idx})`);
+      values.push(userId);
+      idx++;
+    }
+
+    if (filters?.typ_id && filters.typ_id.length > 0) {
+      conditions.push(`i.typ_id = ANY($${idx}::int[])`);
+      values.push(filters.typ_id);
+      idx++;
+    }
+
+    if (filters?.prioritaet && filters.prioritaet.length > 0) {
+      conditions.push(`i.prioritaet = ANY($${idx}::text[])`);
+      values.push(filters.prioritaet);
+      idx++;
+    }
+
+    if (filters?.status && filters.status.length > 0) {
+      conditions.push(`i.status = ANY($${idx}::text[])`);
+      values.push(filters.status);
+      idx++;
+    }
+
+    if (filters?.erstellt_von) {
+      conditions.push(`i.erstellt_von = $${idx}`);
+      values.push(filters.erstellt_von);
+      idx++;
+    }
+
+    if (filters?.zugewiesen_an) {
+      conditions.push(`i.zugewiesen_an = $${idx}`);
+      values.push(filters.zugewiesen_an);
+      idx++;
+    }
+
+    const where = conditions.length > 0 ? `WHERE ${conditions.join(' AND ')}` : '';
+    const query = `${BASE_SELECT} ${where} ORDER BY i.created_at DESC`;
+    const result = await pool.query(query, values);
     return result.rows;
   } catch (error) {
     logger.error('IssueService.getIssues failed', { error });
@@ -26,13 +81,7 @@ async function getIssues(userId: string, canViewAll: boolean) {
 async function getIssueById(id: number) {
   try {
     const result = await pool.query(
-      `SELECT i.*,
-              u1.name AS erstellt_von_name,
-              u2.name AS zugewiesen_an_name
-       FROM issues i
-       LEFT JOIN users u1 ON u1.id = i.erstellt_von
-       LEFT JOIN users u2 ON u2.id = i.zugewiesen_an
-       WHERE i.id = $1`,
+      `${BASE_SELECT} WHERE i.id = $1`,
       [id]
     );
     return result.rows[0] || null;
@@ -43,63 +92,96 @@ async function getIssueById(id: number) {
 }
 
 async function createIssue(
-  data: { titel: string; beschreibung?: string; typ?: string; prioritaet?: string },
+  data: { titel: string; beschreibung?: string; typ_id?: number; prioritaet?: string },
   userId: string
 ) {
   try {
     const result = await pool.query(
-      `INSERT INTO issues (titel, beschreibung, typ, prioritaet, erstellt_von)
+      `INSERT INTO issues (titel, beschreibung, typ_id, prioritaet, erstellt_von)
        VALUES ($1, $2, $3, $4, $5)
        RETURNING *`,
       [
         data.titel,
         data.beschreibung || null,
-        data.typ || 'sonstiges',
+        data.typ_id || 3,
         data.prioritaet || 'mittel',
         userId,
       ]
     );
-    return result.rows[0];
+    return getIssueById(result.rows[0].id);
   } catch (error) {
     logger.error('IssueService.createIssue failed', { error });
     throw new Error('Issue konnte nicht erstellt werden');
   }
 }
 
+// Sentinel value to explicitly set zugewiesen_an to NULL (not used currently but kept for reference)
+const UNASSIGN = '__UNASSIGN__';
+
 async function updateIssue(
   id: number,
   data: {
     titel?: string;
     beschreibung?: string;
-    typ?: string;
+    typ_id?: number;
     prioritaet?: string;
     status?: string;
     zugewiesen_an?: string | null;
   }
 ) {
   try {
-    const result = await pool.query(
-      `UPDATE issues
-       SET titel = COALESCE($1, titel),
-           beschreibung = COALESCE($2, beschreibung),
-           typ = COALESCE($3, typ),
-           prioritaet = COALESCE($4, prioritaet),
-           status = COALESCE($5, status),
-           zugewiesen_an = COALESCE($6, zugewiesen_an),
-           updated_at = NOW()
-       WHERE id = $7
-       RETURNING *`,
-      [
-        data.titel,
-        data.beschreibung,
-        data.typ,
-        data.prioritaet,
-        data.status,
-        data.zugewiesen_an,
-        id,
-      ]
-    );
-    return result.rows[0] || null;
+    const setClauses: string[] = [];
+    const values: any[] = [];
+    let idx = 1;
+
+    if (data.titel !== undefined) {
+      setClauses.push(`titel = $${idx}`);
+      values.push(data.titel);
+      idx++;
+    }
+    if (data.beschreibung !== undefined) {
+      setClauses.push(`beschreibung = $${idx}`);
+      values.push(data.beschreibung);
+      idx++;
+    }
+    if (data.typ_id !== undefined) {
+      setClauses.push(`typ_id = $${idx}`);
+      values.push(data.typ_id);
+      idx++;
+    }
+    if (data.prioritaet !== undefined) {
+      setClauses.push(`prioritaet = $${idx}`);
+      values.push(data.prioritaet);
+      idx++;
+    }
+    if (data.status !== undefined) {
+      setClauses.push(`status = $${idx}`);
+      values.push(data.status);
+      idx++;
+    }
+    if ('zugewiesen_an' in data) {
+      setClauses.push(`zugewiesen_an = $${idx}`);
+      values.push(data.zugewiesen_an ?? null);
+      idx++;
+    }
+
+    if (setClauses.length === 0) {
+      return getIssueById(id);
+    }
+
+    setClauses.push(`updated_at = NOW()`);
+    values.push(id);
+
+    const query = `
+      UPDATE issues
+      SET ${setClauses.join(', ')}
+      WHERE id = $${idx}
+      RETURNING id
+    `;
+    const result = await pool.query(query, values);
+    if (result.rows.length === 0) return null;
+
+    return getIssueById(id);
   } catch (error) {
     logger.error('IssueService.updateIssue failed', { error, id });
     throw new Error('Issue konnte nicht aktualisiert werden');
@@ -151,6 +233,134 @@ async function addComment(issueId: number, autorId: string, inhalt: string) {
   }
 }
 
+async function getTypes() {
+  try {
+    const result = await pool.query(
+      `SELECT * FROM issue_typen WHERE aktiv = true ORDER BY sort_order ASC, id ASC`
+    );
+    return result.rows;
+  } catch (error) {
+    logger.error('IssueService.getTypes failed', { error });
+    throw new Error('Issue-Typen konnten nicht geladen werden');
+  }
+}
+
+async function createType(data: {
+  name: string;
+  parent_id?: number | null;
+  icon?: string | null;
+  farbe?: string | null;
+  erlaubt_abgelehnt?: boolean;
+  sort_order?: number;
+}) {
+  try {
+    const result = await pool.query(
+      `INSERT INTO issue_typen (name, parent_id, icon, farbe, erlaubt_abgelehnt, sort_order)
+       VALUES ($1, $2, $3, $4, $5, $6)
+       RETURNING *`,
+      [
+        data.name,
+        data.parent_id ?? null,
+        data.icon ?? null,
+        data.farbe ?? null,
+        data.erlaubt_abgelehnt ?? true,
+        data.sort_order ?? 0,
+      ]
+    );
+    return result.rows[0];
+  } catch (error) {
+    logger.error('IssueService.createType failed', { error });
+    throw new Error('Issue-Typ konnte nicht erstellt werden');
+  }
+}
+
+async function updateType(
+  id: number,
+  data: {
+    name?: string;
+    parent_id?: number | null;
+    icon?: string | null;
+    farbe?: string | null;
+    erlaubt_abgelehnt?: boolean;
+    sort_order?: number;
+  }
+) {
+  try {
+    const setClauses: string[] = [];
+    const values: any[] = [];
+    let idx = 1;
+
+    if (data.name !== undefined) {
+      setClauses.push(`name = $${idx}`);
+      values.push(data.name);
+      idx++;
+    }
+    if ('parent_id' in data) {
+      setClauses.push(`parent_id = $${idx}`);
+      values.push(data.parent_id);
+      idx++;
+    }
+    if ('icon' in data) {
+      setClauses.push(`icon = $${idx}`);
+      values.push(data.icon);
+      idx++;
+    }
+    if ('farbe' in data) {
+      setClauses.push(`farbe = $${idx}`);
+      values.push(data.farbe);
+      idx++;
+    }
+    if (data.erlaubt_abgelehnt !== undefined) {
+      setClauses.push(`erlaubt_abgelehnt = $${idx}`);
+      values.push(data.erlaubt_abgelehnt);
+      idx++;
+    }
+    if (data.sort_order !== undefined) {
+      setClauses.push(`sort_order = $${idx}`);
+      values.push(data.sort_order);
+      idx++;
+    }
+
+    if (setClauses.length === 0) {
+      const result = await pool.query(`SELECT * FROM issue_typen WHERE id = $1`, [id]);
+      return result.rows[0] || null;
+    }
+
+    values.push(id);
+    const query = `UPDATE issue_typen SET ${setClauses.join(', ')} WHERE id = $${idx} RETURNING *`;
+    const result = await pool.query(query, values);
+    return result.rows[0] || null;
+  } catch (error) {
+    logger.error('IssueService.updateType failed', { error, id });
+    throw new Error('Issue-Typ konnte nicht aktualisiert werden');
+  }
+}
+
+async function deactivateType(id: number) {
+  try {
+    const result = await pool.query(
+      `UPDATE issue_typen SET aktiv = false WHERE id = $1 RETURNING *`,
+      [id]
+    );
+    return result.rows[0] || null;
+  } catch (error) {
+    logger.error('IssueService.deactivateType failed', { error, id });
+    throw new Error('Issue-Typ konnte nicht deaktiviert werden');
+  }
+}
+
+async function getAssignableMembers() {
+  try {
+    const result = await pool.query(
+      `SELECT id, name FROM users WHERE id IS NOT NULL ORDER BY name`
+    );
+    return result.rows;
+  } catch (error) {
+    logger.error('IssueService.getAssignableMembers failed', { error });
+    throw new Error('Mitglieder konnten nicht geladen werden');
+  }
+}
+
 export default {
   getIssues,
   getIssueById,
@@ -159,4 +369,10 @@ export default {
   deleteIssue,
   getComments,
   addComment,
+  getTypes,
+  createType,
+  updateType,
+  deactivateType,
+  getAssignableMembers,
+  UNASSIGN,
 };
diff --git a/frontend/src/components/admin/PermissionMatrixTab.tsx b/frontend/src/components/admin/PermissionMatrixTab.tsx
index 988cdb6..b6b7d2d 100644
--- a/frontend/src/components/admin/PermissionMatrixTab.tsx
+++ b/frontend/src/components/admin/PermissionMatrixTab.tsx
@@ -104,6 +104,11 @@ const PERMISSION_SUB_GROUPS: Record<string, Record<string, string[]>> = {
     'Anfragen': ['create_request', 'approve', 'link_orders', 'order_for_user', 'edit'],
     'Widget': ['widget'],
   },
+  issues: {
+    'Ansehen': ['view_own', 'view_all'],
+    'Bearbeiten': ['create', 'change_status', 'edit', 'delete'],
+    'Admin': ['edit_settings'],
+  },
   admin: {
     'Allgemein': ['view', 'write'],
     'Services': ['view_services', 'edit_services'],
diff --git a/frontend/src/components/shared/Sidebar.tsx b/frontend/src/components/shared/Sidebar.tsx
index 5c09aaa..d9b0177 100644
--- a/frontend/src/components/shared/Sidebar.tsx
+++ b/frontend/src/components/shared/Sidebar.tsx
@@ -193,12 +193,15 @@ function Sidebar({ mobileOpen, onMobileClose }: SidebarProps) {
     ausruestungSubItems.push({ text: 'Katalog', path: `/ausruestungsanfrage?tab=${ausruestungTabIdx}` });
 
     // Build Issues sub-items dynamically (tab order must match Issues.tsx)
-    const issuesSubItems: SubItem[] = [{ text: 'Meine Issues', path: '/issues?tab=0' }];
+    const issuesSubItems: SubItem[] = [
+      { text: 'Meine Issues', path: '/issues?tab=0' },
+      { text: 'Zugewiesene', path: '/issues?tab=1' },
+    ];
     if (hasPermission('issues:view_all')) {
-      issuesSubItems.push({ text: 'Alle Issues', path: '/issues?tab=1' });
+      issuesSubItems.push({ text: 'Alle Issues', path: '/issues?tab=2' });
     }
-    if (hasPermission('issues:manage')) {
-      issuesSubItems.push({ text: 'Erledigte Issues', path: `/issues?tab=${issuesSubItems.length}` });
+    if (hasPermission('issues:edit_settings')) {
+      issuesSubItems.push({ text: 'Kategorien', path: `/issues?tab=${issuesSubItems.length}` });
     }
 
     const items = baseNavigationItems
diff --git a/frontend/src/pages/Issues.tsx b/frontend/src/pages/Issues.tsx
index ed4edea..bba18b8 100644
--- a/frontend/src/pages/Issues.tsx
+++ b/frontend/src/pages/Issues.tsx
@@ -1,14 +1,16 @@
-import { useState } from 'react';
+import { useState, useMemo } from 'react';
 import {
   Box, Tab, Tabs, Typography, Table, TableBody, TableCell, TableContainer,
   TableHead, TableRow, Paper, Chip, IconButton, Button, Dialog, DialogTitle,
   DialogContent, DialogActions, TextField, MenuItem, Select, FormControl,
   InputLabel, Collapse, Divider, CircularProgress, FormControlLabel, Switch,
+  Autocomplete,
 } from '@mui/material';
 import {
   Add as AddIcon, Delete as DeleteIcon, ExpandMore, ExpandLess,
   BugReport, FiberNew, HelpOutline, Send as SendIcon,
-  Circle as CircleIcon,
+  Circle as CircleIcon, Edit as EditIcon, Refresh as RefreshIcon,
+  DragIndicator,
 } from '@mui/icons-material';
 import { useQuery, useMutation, useQueryClient } from '@tanstack/react-query';
 import { useSearchParams } from 'react-router-dom';
@@ -18,7 +20,7 @@ import { useNotification } from '../contexts/NotificationContext';
 import { usePermissionContext } from '../contexts/PermissionContext';
 import { useAuth } from '../contexts/AuthContext';
 import { issuesApi } from '../services/issues';
-import type { Issue, IssueComment, CreateIssuePayload, UpdateIssuePayload } from '../types/issue.types';
+import type { Issue, IssueComment, IssueTyp, CreateIssuePayload, UpdateIssuePayload, IssueFilters, AssignableMember } from '../types/issue.types';
 
 // ── Helpers ──
 
@@ -39,18 +41,6 @@ const STATUS_LABELS: Record<Issue['status'], string> = {
   abgelehnt: 'Abgelehnt',
 };
 
-const TYP_ICONS: Record<Issue['typ'], JSX.Element> = {
-  bug: <BugReport fontSize="small" color="error" />,
-  feature: <FiberNew fontSize="small" color="info" />,
-  sonstiges: <HelpOutline fontSize="small" color="action" />,
-};
-
-const TYP_LABELS: Record<Issue['typ'], string> = {
-  bug: 'Bug',
-  feature: 'Feature',
-  sonstiges: 'Sonstiges',
-};
-
 const PRIO_COLORS: Record<Issue['prioritaet'], string> = {
   hoch: '#d32f2f',
   mittel: '#ed6c02',
@@ -63,6 +53,18 @@ const PRIO_LABELS: Record<Issue['prioritaet'], string> = {
   niedrig: 'Niedrig',
 };
 
+const ICON_MAP: Record<string, JSX.Element> = {
+  BugReport: <BugReport fontSize="small" />,
+  FiberNew: <FiberNew fontSize="small" />,
+  HelpOutline: <HelpOutline fontSize="small" />,
+};
+
+function getTypIcon(iconName: string | null, farbe: string | null): JSX.Element {
+  const icon = ICON_MAP[iconName || ''] || <HelpOutline fontSize="small" />;
+  const colorProp = farbe === 'error' ? 'error' : farbe === 'info' ? 'info' : farbe === 'action' ? 'action' : 'action';
+  return <Box component="span" sx={{ display: 'inline-flex', color: `${colorProp}.main` }}>{icon}</Box>;
+}
+
 // ── Tab Panel ──
 
 interface TabPanelProps { children: React.ReactNode; index: number; value: number }
@@ -73,7 +75,7 @@ function TabPanel({ children, value, index }: TabPanelProps) {
 
 // ── Comment Section ──
 
-function CommentSection({ issueId }: { issueId: number }) {
+function CommentSection({ issueId, canComment }: { issueId: number; canComment: boolean }) {
   const queryClient = useQueryClient();
   const { showError } = useNotification();
   const [text, setText] = useState('');
@@ -109,30 +111,32 @@ function CommentSection({ issueId }: { issueId: number }) {
           </Box>
         ))
       )}
-      <Box sx={{ display: 'flex', gap: 1, mt: 1 }}>
-        <TextField
-          size="small"
-          fullWidth
-          placeholder="Kommentar schreiben..."
-          value={text}
-          onChange={(e) => setText(e.target.value)}
-          onKeyDown={(e) => {
-            if (e.key === 'Enter' && !e.shiftKey && text.trim()) {
-              e.preventDefault();
-              addMut.mutate(text.trim());
-            }
-          }}
-          multiline
-          maxRows={4}
-        />
-        <IconButton
-          color="primary"
-          disabled={!text.trim() || addMut.isPending}
-          onClick={() => addMut.mutate(text.trim())}
-        >
-          <SendIcon />
-        </IconButton>
-      </Box>
+      {canComment && (
+        <Box sx={{ display: 'flex', gap: 1, mt: 1 }}>
+          <TextField
+            size="small"
+            fullWidth
+            placeholder="Kommentar schreiben..."
+            value={text}
+            onChange={(e) => setText(e.target.value)}
+            onKeyDown={(e) => {
+              if (e.key === 'Enter' && !e.shiftKey && text.trim()) {
+                e.preventDefault();
+                addMut.mutate(text.trim());
+              }
+            }}
+            multiline
+            maxRows={4}
+          />
+          <IconButton
+            color="primary"
+            disabled={!text.trim() || addMut.isPending}
+            onClick={() => addMut.mutate(text.trim())}
+          >
+            <SendIcon />
+          </IconButton>
+        </Box>
+      )}
     </Box>
   );
 }
@@ -141,19 +145,48 @@ function CommentSection({ issueId }: { issueId: number }) {
 
 function IssueRow({
   issue,
-  canManage,
-  isOwner,
+  userId,
+  hasEdit,
+  hasChangeStatus,
+  hasDelete,
+  members,
   onDelete,
 }: {
   issue: Issue;
-  canManage: boolean;
-  isOwner: boolean;
+  userId: string;
+  hasEdit: boolean;
+  hasChangeStatus: boolean;
+  hasDelete: boolean;
+  members: AssignableMember[];
   onDelete: (id: number) => void;
 }) {
   const [expanded, setExpanded] = useState(false);
+  const [reopenOpen, setReopenOpen] = useState(false);
+  const [reopenComment, setReopenComment] = useState('');
   const queryClient = useQueryClient();
   const { showSuccess, showError } = useNotification();
 
+  const isOwner = issue.erstellt_von === userId;
+  const isAssignee = issue.zugewiesen_an === userId;
+  const canDelete = hasDelete || isOwner;
+  const canComment = isOwner || isAssignee || hasChangeStatus || hasEdit;
+
+  // Determine status change capability
+  const canChangeStatus = hasEdit || hasChangeStatus || isAssignee;
+  const ownerOnlyErledigt = isOwner && !canChangeStatus;
+
+  // Build allowed statuses
+  const allowedStatuses = useMemo(() => {
+    if (hasEdit) return ['offen', 'in_bearbeitung', 'erledigt', 'abgelehnt'] as Issue['status'][];
+    if (hasChangeStatus || isAssignee) {
+      const statuses: Issue['status'][] = ['offen', 'in_bearbeitung', 'erledigt'];
+      if (issue.typ_erlaubt_abgelehnt) statuses.push('abgelehnt');
+      return statuses;
+    }
+    if (isOwner) return [issue.status, 'erledigt'] as Issue['status'][];
+    return [issue.status] as Issue['status'][];
+  }, [hasEdit, hasChangeStatus, isAssignee, isOwner, issue.status, issue.typ_erlaubt_abgelehnt]);
+
   const updateMut = useMutation({
     mutationFn: (data: UpdateIssuePayload) => issuesApi.updateIssue(issue.id, data),
     onSuccess: () => {
@@ -163,6 +196,20 @@ function IssueRow({
     onError: () => showError('Fehler beim Aktualisieren'),
   });
 
+  const handleReopen = () => {
+    updateMut.mutate({ status: 'offen', kommentar: reopenComment.trim() }, {
+      onSuccess: () => {
+        setReopenOpen(false);
+        setReopenComment('');
+        queryClient.invalidateQueries({ queryKey: ['issues'] });
+        showSuccess('Issue wiedereröffnet');
+      },
+    });
+  };
+
+  // Owner on erledigt issue: show reopen button instead of status select
+  const showReopenButton = ownerOnlyErledigt && issue.status === 'erledigt';
+
   return (
     <>
       <TableRow
@@ -173,12 +220,12 @@ function IssueRow({
         <TableCell sx={{ width: 50 }}>#{issue.id}</TableCell>
         <TableCell>
           <Box sx={{ display: 'flex', alignItems: 'center', gap: 1 }}>
-            {TYP_ICONS[issue.typ]}
+            {getTypIcon(issue.typ_icon, issue.typ_farbe)}
             <Typography variant="body2">{issue.titel}</Typography>
           </Box>
         </TableCell>
         <TableCell>
-          <Chip label={TYP_LABELS[issue.typ]} size="small" variant="outlined" />
+          <Chip label={issue.typ_name} size="small" variant="outlined" />
         </TableCell>
         <TableCell>
           <Box sx={{ display: 'flex', alignItems: 'center', gap: 0.5 }}>
@@ -194,6 +241,7 @@ function IssueRow({
           />
         </TableCell>
         <TableCell>{issue.erstellt_von_name || '-'}</TableCell>
+        <TableCell>{issue.zugewiesen_an_name || '-'}</TableCell>
         <TableCell>{formatDate(issue.created_at)}</TableCell>
         <TableCell>
           <IconButton size="small" onClick={(e) => { e.stopPropagation(); setExpanded(!expanded); }}>
@@ -202,7 +250,7 @@ function IssueRow({
         </TableCell>
       </TableRow>
       <TableRow>
-        <TableCell colSpan={8} sx={{ py: 0 }}>
+        <TableCell colSpan={9} sx={{ py: 0 }}>
           <Collapse in={expanded} timeout="auto" unmountOnExit>
             <Box sx={{ p: 2 }}>
               {issue.beschreibung && (
@@ -210,14 +258,19 @@ function IssueRow({
                   {issue.beschreibung}
                 </Typography>
               )}
-              {issue.zugewiesen_an_name && (
-                <Typography variant="body2" color="text.secondary" sx={{ mb: 1 }}>
-                  Zugewiesen an: {issue.zugewiesen_an_name}
-                </Typography>
-              )}
 
-              {(canManage || isOwner) && (
-                <Box sx={{ display: 'flex', gap: 1, mb: 2, flexWrap: 'wrap' }}>
+              <Box sx={{ display: 'flex', gap: 1, mb: 2, flexWrap: 'wrap', alignItems: 'center' }}>
+                {/* Status control */}
+                {showReopenButton ? (
+                  <Button
+                    size="small"
+                    variant="outlined"
+                    startIcon={<RefreshIcon />}
+                    onClick={(e) => { e.stopPropagation(); setReopenOpen(true); }}
+                  >
+                    Wiedereröffnen
+                  </Button>
+                ) : canChangeStatus || isOwner ? (
                   <FormControl size="small" sx={{ minWidth: 160 }}>
                     <InputLabel>Status</InputLabel>
                     <Select
@@ -226,31 +279,47 @@ function IssueRow({
                       onChange={(e) => updateMut.mutate({ status: e.target.value as Issue['status'] })}
                       onClick={(e) => e.stopPropagation()}
                     >
-                      <MenuItem value="offen">Offen</MenuItem>
-                      <MenuItem value="in_bearbeitung">In Bearbeitung</MenuItem>
-                      <MenuItem value="erledigt">Erledigt</MenuItem>
-                      <MenuItem value="abgelehnt">Abgelehnt</MenuItem>
+                      {allowedStatuses.map(s => (
+                        <MenuItem key={s} value={s}>{STATUS_LABELS[s]}</MenuItem>
+                      ))}
                     </Select>
                   </FormControl>
-                  {canManage && (
-                    <FormControl size="small" sx={{ minWidth: 140 }}>
-                      <InputLabel>Priorität</InputLabel>
-                      <Select
-                        value={issue.prioritaet}
-                        label="Priorität"
-                        onChange={(e) => updateMut.mutate({ prioritaet: e.target.value as Issue['prioritaet'] })}
-                        onClick={(e) => e.stopPropagation()}
-                      >
-                        <MenuItem value="niedrig">Niedrig</MenuItem>
-                        <MenuItem value="mittel">Mittel</MenuItem>
-                        <MenuItem value="hoch">Hoch</MenuItem>
-                      </Select>
-                    </FormControl>
-                  )}
-                </Box>
-              )}
+                ) : null}
 
-              {(canManage || isOwner) && (
+                {/* Priority control — only with issues:edit */}
+                {hasEdit && (
+                  <FormControl size="small" sx={{ minWidth: 140 }}>
+                    <InputLabel>Priorität</InputLabel>
+                    <Select
+                      value={issue.prioritaet}
+                      label="Priorität"
+                      onChange={(e) => updateMut.mutate({ prioritaet: e.target.value as Issue['prioritaet'] })}
+                      onClick={(e) => e.stopPropagation()}
+                    >
+                      <MenuItem value="niedrig">Niedrig</MenuItem>
+                      <MenuItem value="mittel">Mittel</MenuItem>
+                      <MenuItem value="hoch">Hoch</MenuItem>
+                    </Select>
+                  </FormControl>
+                )}
+
+                {/* Assignment — only with issues:edit */}
+                {hasEdit && (
+                  <Autocomplete
+                    size="small"
+                    sx={{ minWidth: 200 }}
+                    options={members}
+                    getOptionLabel={(o) => o.name}
+                    value={members.find(m => m.id === issue.zugewiesen_an) || null}
+                    onChange={(_e, val) => updateMut.mutate({ zugewiesen_an: val?.id || null })}
+                    renderInput={(params) => <TextField {...params} label="Zugewiesen an" size="small" />}
+                    onClick={(e: React.MouseEvent) => e.stopPropagation()}
+                    isOptionEqualToValue={(o, v) => o.id === v.id}
+                  />
+                )}
+              </Box>
+
+              {canDelete && (
                 <Button
                   size="small"
                   color="error"
@@ -263,18 +332,59 @@ function IssueRow({
               )}
 
               <Divider sx={{ my: 1 }} />
-              <CommentSection issueId={issue.id} />
+              <CommentSection issueId={issue.id} canComment={canComment} />
             </Box>
           </Collapse>
         </TableCell>
       </TableRow>
+
+      {/* Reopen Dialog */}
+      <Dialog open={reopenOpen} onClose={() => setReopenOpen(false)} maxWidth="sm" fullWidth>
+        <DialogTitle>Issue wiedereröffnen</DialogTitle>
+        <DialogContent sx={{ display: 'flex', flexDirection: 'column', gap: 2, mt: 1 }}>
+          <TextField
+            label="Kommentar (Pflicht)"
+            required
+            multiline
+            rows={3}
+            fullWidth
+            value={reopenComment}
+            onChange={(e) => setReopenComment(e.target.value)}
+            autoFocus
+          />
+        </DialogContent>
+        <DialogActions>
+          <Button onClick={() => setReopenOpen(false)}>Abbrechen</Button>
+          <Button
+            variant="contained"
+            disabled={!reopenComment.trim() || updateMut.isPending}
+            onClick={handleReopen}
+          >
+            Wiedereröffnen
+          </Button>
+        </DialogActions>
+      </Dialog>
     </>
   );
 }
 
 // ── Issue Table ──
 
-function IssueTable({ issues, canManage, userId }: { issues: Issue[]; canManage: boolean; userId: string }) {
+function IssueTable({
+  issues,
+  userId,
+  hasEdit,
+  hasChangeStatus,
+  hasDelete,
+  members,
+}: {
+  issues: Issue[];
+  userId: string;
+  hasEdit: boolean;
+  hasChangeStatus: boolean;
+  hasDelete: boolean;
+  members: AssignableMember[];
+}) {
   const queryClient = useQueryClient();
   const { showSuccess, showError } = useNotification();
 
@@ -306,6 +416,7 @@ function IssueTable({ issues, canManage, userId }: { issues: Issue[]; canManage:
             <TableCell>Priorität</TableCell>
             <TableCell>Status</TableCell>
             <TableCell>Erstellt von</TableCell>
+            <TableCell>Zugewiesen an</TableCell>
             <TableCell>Erstellt am</TableCell>
             <TableCell />
           </TableRow>
@@ -315,8 +426,11 @@ function IssueTable({ issues, canManage, userId }: { issues: Issue[]; canManage:
             <IssueRow
               key={issue.id}
               issue={issue}
-              canManage={canManage}
-              isOwner={issue.erstellt_von === userId}
+              userId={userId}
+              hasEdit={hasEdit}
+              hasChangeStatus={hasChangeStatus}
+              hasDelete={hasDelete}
+              members={members}
               onDelete={(id) => deleteMut.mutate(id)}
             />
           ))}
@@ -326,6 +440,295 @@ function IssueTable({ issues, canManage, userId }: { issues: Issue[]; canManage:
   );
 }
 
+// ── Filter Bar (for "Alle Issues" tab) ──
+
+function FilterBar({
+  filters,
+  onChange,
+  types,
+  members,
+}: {
+  filters: IssueFilters;
+  onChange: (f: IssueFilters) => void;
+  types: IssueTyp[];
+  members: AssignableMember[];
+}) {
+  return (
+    <Box sx={{ display: 'flex', gap: 1.5, mb: 2, flexWrap: 'wrap', alignItems: 'center' }}>
+      {/* Type filter */}
+      <Autocomplete
+        multiple
+        size="small"
+        sx={{ minWidth: 200 }}
+        options={types}
+        getOptionLabel={(t) => t.name}
+        value={types.filter(t => filters.typ_id?.includes(t.id))}
+        onChange={(_e, val) => onChange({ ...filters, typ_id: val.map(v => v.id) })}
+        renderInput={(params) => <TextField {...params} label="Typ" size="small" />}
+        isOptionEqualToValue={(o, v) => o.id === v.id}
+      />
+
+      {/* Priority filter */}
+      <Autocomplete
+        multiple
+        size="small"
+        sx={{ minWidth: 180 }}
+        options={['niedrig', 'mittel', 'hoch']}
+        getOptionLabel={(p) => PRIO_LABELS[p as Issue['prioritaet']] || p}
+        value={filters.prioritaet || []}
+        onChange={(_e, val) => onChange({ ...filters, prioritaet: val })}
+        renderInput={(params) => <TextField {...params} label="Priorität" size="small" />}
+      />
+
+      {/* Status filter */}
+      <Autocomplete
+        multiple
+        size="small"
+        sx={{ minWidth: 200 }}
+        options={['offen', 'in_bearbeitung', 'erledigt', 'abgelehnt']}
+        getOptionLabel={(s) => STATUS_LABELS[s as Issue['status']] || s}
+        value={filters.status || []}
+        onChange={(_e, val) => onChange({ ...filters, status: val })}
+        renderInput={(params) => <TextField {...params} label="Status" size="small" />}
+      />
+
+      {/* Erstellt von */}
+      <Autocomplete
+        size="small"
+        sx={{ minWidth: 180 }}
+        options={members}
+        getOptionLabel={(m) => m.name}
+        value={members.find(m => m.id === filters.erstellt_von) || null}
+        onChange={(_e, val) => onChange({ ...filters, erstellt_von: val?.id })}
+        renderInput={(params) => <TextField {...params} label="Erstellt von" size="small" />}
+        isOptionEqualToValue={(o, v) => o.id === v.id}
+      />
+
+      {/* Clear */}
+      {(filters.typ_id?.length || filters.prioritaet?.length || filters.status?.length || filters.erstellt_von) && (
+        <Button size="small" onClick={() => onChange({})}>Filter zurücksetzen</Button>
+      )}
+    </Box>
+  );
+}
+
+// ── Issue Type Admin ──
+
+function IssueTypeAdmin() {
+  const queryClient = useQueryClient();
+  const { showSuccess, showError } = useNotification();
+  const [editId, setEditId] = useState<number | null>(null);
+  const [editData, setEditData] = useState<Partial<IssueTyp>>({});
+  const [createOpen, setCreateOpen] = useState(false);
+  const [createData, setCreateData] = useState<Partial<IssueTyp>>({ name: '', icon: 'HelpOutline', farbe: 'action', erlaubt_abgelehnt: true, sort_order: 0, aktiv: true });
+
+  const { data: types = [], isLoading } = useQuery({
+    queryKey: ['issue-types'],
+    queryFn: issuesApi.getTypes,
+  });
+
+  const createMut = useMutation({
+    mutationFn: (data: Partial<IssueTyp>) => issuesApi.createType(data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['issue-types'] });
+      showSuccess('Kategorie erstellt');
+      setCreateOpen(false);
+      setCreateData({ name: '', icon: 'HelpOutline', farbe: 'action', erlaubt_abgelehnt: true, sort_order: 0, aktiv: true });
+    },
+    onError: () => showError('Fehler beim Erstellen'),
+  });
+
+  const updateMut = useMutation({
+    mutationFn: ({ id, data }: { id: number; data: Partial<IssueTyp> }) => issuesApi.updateType(id, data),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['issue-types'] });
+      showSuccess('Kategorie aktualisiert');
+      setEditId(null);
+    },
+    onError: () => showError('Fehler beim Aktualisieren'),
+  });
+
+  const deleteMut = useMutation({
+    mutationFn: (id: number) => issuesApi.deleteType(id),
+    onSuccess: () => {
+      queryClient.invalidateQueries({ queryKey: ['issue-types'] });
+      showSuccess('Kategorie gelöscht');
+    },
+    onError: () => showError('Fehler beim Löschen'),
+  });
+
+  const startEdit = (t: IssueTyp) => {
+    setEditId(t.id);
+    setEditData({ name: t.name, icon: t.icon, farbe: t.farbe, erlaubt_abgelehnt: t.erlaubt_abgelehnt, sort_order: t.sort_order, aktiv: t.aktiv, parent_id: t.parent_id });
+  };
+
+  // Flatten types with children indented
+  const flatTypes = useMemo(() => {
+    const roots = types.filter(t => !t.parent_id);
+    const result: { type: IssueTyp; indent: boolean }[] = [];
+    for (const root of roots) {
+      result.push({ type: root, indent: false });
+      const children = types.filter(t => t.parent_id === root.id);
+      for (const child of children) {
+        result.push({ type: child, indent: true });
+      }
+    }
+    // Add orphans (parent_id set but parent missing)
+    const listed = new Set(result.map(r => r.type.id));
+    for (const t of types) {
+      if (!listed.has(t.id)) result.push({ type: t, indent: false });
+    }
+    return result;
+  }, [types]);
+
+  if (isLoading) return <CircularProgress />;
+
+  return (
+    <Box>
+      <Box sx={{ display: 'flex', justifyContent: 'space-between', alignItems: 'center', mb: 2 }}>
+        <Typography variant="h6">Issue-Kategorien</Typography>
+        <Button startIcon={<AddIcon />} variant="contained" size="small" onClick={() => setCreateOpen(true)}>
+          Neue Kategorie
+        </Button>
+      </Box>
+
+      <TableContainer component={Paper} variant="outlined">
+        <Table size="small">
+          <TableHead>
+            <TableRow>
+              <TableCell>Name</TableCell>
+              <TableCell>Icon</TableCell>
+              <TableCell>Farbe</TableCell>
+              <TableCell>Abgelehnt erlaubt</TableCell>
+              <TableCell>Sort</TableCell>
+              <TableCell>Aktiv</TableCell>
+              <TableCell>Aktionen</TableCell>
+            </TableRow>
+          </TableHead>
+          <TableBody>
+            {flatTypes.map(({ type: t, indent }) => (
+              <TableRow key={t.id} sx={indent ? { bgcolor: 'action.hover' } : undefined}>
+                <TableCell>
+                  <Box sx={{ display: 'flex', alignItems: 'center', gap: 1 }}>
+                    {indent && <DragIndicator fontSize="small" sx={{ opacity: 0.3, ml: 2 }} />}
+                    {editId === t.id ? (
+                      <TextField size="small" value={editData.name || ''} onChange={(e) => setEditData({ ...editData, name: e.target.value })} />
+                    ) : (
+                      <Typography variant="body2">{t.name}</Typography>
+                    )}
+                  </Box>
+                </TableCell>
+                <TableCell>
+                  {editId === t.id ? (
+                    <Select size="small" value={editData.icon || 'HelpOutline'} onChange={(e) => setEditData({ ...editData, icon: e.target.value })}>
+                      <MenuItem value="BugReport">BugReport</MenuItem>
+                      <MenuItem value="FiberNew">FiberNew</MenuItem>
+                      <MenuItem value="HelpOutline">HelpOutline</MenuItem>
+                    </Select>
+                  ) : (
+                    <Box sx={{ display: 'inline-flex' }}>{getTypIcon(t.icon, t.farbe)}</Box>
+                  )}
+                </TableCell>
+                <TableCell>
+                  {editId === t.id ? (
+                    <Select size="small" value={editData.farbe || 'action'} onChange={(e) => setEditData({ ...editData, farbe: e.target.value })}>
+                      <MenuItem value="error">error</MenuItem>
+                      <MenuItem value="info">info</MenuItem>
+                      <MenuItem value="action">action</MenuItem>
+                    </Select>
+                  ) : (
+                    <Chip label={t.farbe || 'action'} size="small" variant="outlined" />
+                  )}
+                </TableCell>
+                <TableCell>
+                  {editId === t.id ? (
+                    <Switch checked={editData.erlaubt_abgelehnt ?? true} onChange={(e) => setEditData({ ...editData, erlaubt_abgelehnt: e.target.checked })} size="small" />
+                  ) : (
+                    <Typography variant="body2">{t.erlaubt_abgelehnt ? 'Ja' : 'Nein'}</Typography>
+                  )}
+                </TableCell>
+                <TableCell>
+                  {editId === t.id ? (
+                    <TextField size="small" type="number" sx={{ width: 70 }} value={editData.sort_order ?? 0} onChange={(e) => setEditData({ ...editData, sort_order: parseInt(e.target.value) || 0 })} />
+                  ) : (
+                    t.sort_order
+                  )}
+                </TableCell>
+                <TableCell>
+                  {editId === t.id ? (
+                    <Switch checked={editData.aktiv ?? true} onChange={(e) => setEditData({ ...editData, aktiv: e.target.checked })} size="small" />
+                  ) : (
+                    <Chip label={t.aktiv ? 'Aktiv' : 'Inaktiv'} size="small" color={t.aktiv ? 'success' : 'default'} />
+                  )}
+                </TableCell>
+                <TableCell>
+                  {editId === t.id ? (
+                    <Box sx={{ display: 'flex', gap: 0.5 }}>
+                      <Button size="small" variant="contained" onClick={() => updateMut.mutate({ id: t.id, data: editData })} disabled={updateMut.isPending}>
+                        Speichern
+                      </Button>
+                      <Button size="small" onClick={() => setEditId(null)}>Abbrechen</Button>
+                    </Box>
+                  ) : (
+                    <Box sx={{ display: 'flex', gap: 0.5 }}>
+                      <IconButton size="small" onClick={() => startEdit(t)}><EditIcon fontSize="small" /></IconButton>
+                      <IconButton size="small" color="error" onClick={() => deleteMut.mutate(t.id)}><DeleteIcon fontSize="small" /></IconButton>
+                    </Box>
+                  )}
+                </TableCell>
+              </TableRow>
+            ))}
+          </TableBody>
+        </Table>
+      </TableContainer>
+
+      {/* Create Type Dialog */}
+      <Dialog open={createOpen} onClose={() => setCreateOpen(false)} maxWidth="sm" fullWidth>
+        <DialogTitle>Neue Kategorie erstellen</DialogTitle>
+        <DialogContent sx={{ display: 'flex', flexDirection: 'column', gap: 2, mt: 1 }}>
+          <TextField label="Name" required fullWidth value={createData.name || ''} onChange={(e) => setCreateData({ ...createData, name: e.target.value })} autoFocus />
+          <FormControl fullWidth>
+            <InputLabel>Übergeordnete Kategorie</InputLabel>
+            <Select value={createData.parent_id ?? ''} label="Übergeordnete Kategorie" onChange={(e) => setCreateData({ ...createData, parent_id: e.target.value ? Number(e.target.value) : null })}>
+              <MenuItem value="">Keine</MenuItem>
+              {types.filter(t => !t.parent_id).map(t => (
+                <MenuItem key={t.id} value={t.id}>{t.name}</MenuItem>
+              ))}
+            </Select>
+          </FormControl>
+          <FormControl fullWidth>
+            <InputLabel>Icon</InputLabel>
+            <Select value={createData.icon || 'HelpOutline'} label="Icon" onChange={(e) => setCreateData({ ...createData, icon: e.target.value })}>
+              <MenuItem value="BugReport">BugReport</MenuItem>
+              <MenuItem value="FiberNew">FiberNew</MenuItem>
+              <MenuItem value="HelpOutline">HelpOutline</MenuItem>
+            </Select>
+          </FormControl>
+          <FormControl fullWidth>
+            <InputLabel>Farbe</InputLabel>
+            <Select value={createData.farbe || 'action'} label="Farbe" onChange={(e) => setCreateData({ ...createData, farbe: e.target.value })}>
+              <MenuItem value="error">error</MenuItem>
+              <MenuItem value="info">info</MenuItem>
+              <MenuItem value="action">action</MenuItem>
+            </Select>
+          </FormControl>
+          <FormControlLabel
+            control={<Switch checked={createData.erlaubt_abgelehnt ?? true} onChange={(e) => setCreateData({ ...createData, erlaubt_abgelehnt: e.target.checked })} />}
+            label="Abgelehnt erlaubt"
+          />
+          <TextField label="Sortierung" type="number" value={createData.sort_order ?? 0} onChange={(e) => setCreateData({ ...createData, sort_order: parseInt(e.target.value) || 0 })} />
+        </DialogContent>
+        <DialogActions>
+          <Button onClick={() => setCreateOpen(false)}>Abbrechen</Button>
+          <Button variant="contained" disabled={!createData.name?.trim() || createMut.isPending} onClick={() => createMut.mutate(createData)}>
+            Erstellen
+          </Button>
+        </DialogActions>
+      </Dialog>
+    </Box>
+  );
+}
+
 // ── Main Page ──
 
 export default function Issues() {
@@ -336,30 +739,65 @@ export default function Issues() {
   const queryClient = useQueryClient();
 
   const canViewAll = hasPermission('issues:view_all');
-  const canManage = hasPermission('issues:manage');
+  const hasEdit = hasPermission('issues:edit');
+  const hasChangeStatus = hasPermission('issues:change_status');
+  const hasDeletePerm = hasPermission('issues:delete');
+  const hasEditSettings = hasPermission('issues:edit_settings');
   const canCreate = hasPermission('issues:create');
   const userId = user?.id || '';
 
+  // Build tab list dynamically
+  const tabs = useMemo(() => {
+    const t: { label: string; key: string }[] = [
+      { label: 'Meine Issues', key: 'mine' },
+      { label: 'Zugewiesene Issues', key: 'assigned' },
+    ];
+    if (canViewAll) t.push({ label: 'Alle Issues', key: 'all' });
+    if (hasEditSettings) t.push({ label: 'Kategorien', key: 'types' });
+    return t;
+  }, [canViewAll, hasEditSettings]);
+
   const tabParam = parseInt(searchParams.get('tab') || '0', 10);
-  const maxTab = canManage ? 2 : (canViewAll ? 1 : 0);
-  const tab = isNaN(tabParam) || tabParam < 0 || tabParam > maxTab ? 0 : tabParam;
+  const tab = isNaN(tabParam) || tabParam < 0 || tabParam >= tabs.length ? 0 : tabParam;
 
-  const [showDone, setShowDone] = useState(false);
+  const [showDoneMine, setShowDoneMine] = useState(false);
+  const [showDoneAssigned, setShowDoneAssigned] = useState(false);
+  const [filters, setFilters] = useState<IssueFilters>({});
   const [createOpen, setCreateOpen] = useState(false);
-  const [form, setForm] = useState<CreateIssuePayload>({ titel: '', typ: 'bug', prioritaet: 'mittel' });
+  const [form, setForm] = useState<CreateIssuePayload>({ titel: '', prioritaet: 'mittel' });
 
+  // Fetch all issues for mine/assigned tabs
   const { data: issues = [], isLoading } = useQuery({
     queryKey: ['issues'],
     queryFn: () => issuesApi.getIssues(),
   });
 
+  // Fetch filtered issues for "Alle Issues" tab
+  const activeTab = tabs[tab]?.key;
+  const { data: filteredIssues = [], isLoading: isFilteredLoading } = useQuery({
+    queryKey: ['issues', 'filtered', filters],
+    queryFn: () => issuesApi.getIssues(filters),
+    enabled: activeTab === 'all',
+  });
+
+  const { data: types = [] } = useQuery({
+    queryKey: ['issue-types'],
+    queryFn: issuesApi.getTypes,
+  });
+
+  const { data: members = [] } = useQuery({
+    queryKey: ['issue-members'],
+    queryFn: issuesApi.getMembers,
+    enabled: hasEdit,
+  });
+
   const createMut = useMutation({
     mutationFn: (data: CreateIssuePayload) => issuesApi.createIssue(data),
     onSuccess: () => {
       queryClient.invalidateQueries({ queryKey: ['issues'] });
       showSuccess('Issue erstellt');
       setCreateOpen(false);
-      setForm({ titel: '', typ: 'bug', prioritaet: 'mittel' });
+      setForm({ titel: '', prioritaet: 'mittel' });
     },
     onError: () => showError('Fehler beim Erstellen'),
   });
@@ -368,9 +806,15 @@ export default function Issues() {
     setSearchParams({ tab: String(newValue) });
   };
 
+  // Filter logic for client-side tabs
+  const isDone = (i: Issue) => i.status === 'erledigt' || i.status === 'abgelehnt';
   const myIssues = issues.filter((i: Issue) => i.erstellt_von === userId);
-  const myIssuesFiltered = myIssues.filter((i: Issue) => showDone || (i.status !== 'erledigt' && i.status !== 'abgelehnt'));
-  const doneIssues = issues.filter((i: Issue) => i.status === 'erledigt' || i.status === 'abgelehnt');
+  const myIssuesFiltered = showDoneMine ? myIssues : myIssues.filter((i: Issue) => !isDone(i));
+  const assignedIssues = issues.filter((i: Issue) => i.zugewiesen_an === userId);
+  const assignedFiltered = showDoneAssigned ? assignedIssues : assignedIssues.filter((i: Issue) => !isDone(i));
+
+  // Default typ_id to first active type
+  const defaultTypId = types.find(t => t.aktiv)?.id;
 
   return (
     <DashboardLayout>
@@ -378,47 +822,53 @@ export default function Issues() {
         <Typography variant="h5" gutterBottom>Issues</Typography>
 
         <Tabs value={tab} onChange={handleTabChange} sx={{ mb: 0 }}>
-          <Tab label="Meine Issues" />
-          {canViewAll && <Tab label="Alle Issues" />}
-          {canManage && <Tab label="Erledigte Issues" />}
+          {tabs.map((t, i) => <Tab key={i} label={t.label} />)}
         </Tabs>
 
+        {/* Tab 0: Meine Issues */}
         <TabPanel value={tab} index={0}>
           <FormControlLabel
-            control={<Switch checked={showDone} onChange={(e) => setShowDone(e.target.checked)} size="small" />}
+            control={<Switch checked={showDoneMine} onChange={(e) => setShowDoneMine(e.target.checked)} size="small" />}
             label="Erledigte anzeigen"
             sx={{ mb: 1 }}
           />
           {isLoading ? (
-            <Box sx={{ display: 'flex', justifyContent: 'center', py: 4 }}>
-              <CircularProgress />
-            </Box>
+            <Box sx={{ display: 'flex', justifyContent: 'center', py: 4 }}><CircularProgress /></Box>
           ) : (
-            <IssueTable issues={myIssuesFiltered} canManage={canManage} userId={userId} />
+            <IssueTable issues={myIssuesFiltered} userId={userId} hasEdit={hasEdit} hasChangeStatus={hasChangeStatus} hasDelete={hasDeletePerm} members={members} />
           )}
         </TabPanel>
 
+        {/* Tab 1: Zugewiesene Issues */}
+        <TabPanel value={tab} index={1}>
+          <FormControlLabel
+            control={<Switch checked={showDoneAssigned} onChange={(e) => setShowDoneAssigned(e.target.checked)} size="small" />}
+            label="Erledigte anzeigen"
+            sx={{ mb: 1 }}
+          />
+          {isLoading ? (
+            <Box sx={{ display: 'flex', justifyContent: 'center', py: 4 }}><CircularProgress /></Box>
+          ) : (
+            <IssueTable issues={assignedFiltered} userId={userId} hasEdit={hasEdit} hasChangeStatus={hasChangeStatus} hasDelete={hasDeletePerm} members={members} />
+          )}
+        </TabPanel>
+
+        {/* Tab 2: Alle Issues (conditional) */}
         {canViewAll && (
-          <TabPanel value={tab} index={1}>
-            {isLoading ? (
-              <Box sx={{ display: 'flex', justifyContent: 'center', py: 4 }}>
-                <CircularProgress />
-              </Box>
+          <TabPanel value={tab} index={tabs.findIndex(t => t.key === 'all')}>
+            <FilterBar filters={filters} onChange={setFilters} types={types} members={members} />
+            {isFilteredLoading ? (
+              <Box sx={{ display: 'flex', justifyContent: 'center', py: 4 }}><CircularProgress /></Box>
             ) : (
-              <IssueTable issues={issues} canManage={canManage} userId={userId} />
+              <IssueTable issues={filteredIssues} userId={userId} hasEdit={hasEdit} hasChangeStatus={hasChangeStatus} hasDelete={hasDeletePerm} members={members} />
             )}
           </TabPanel>
         )}
 
-        {canManage && (
-          <TabPanel value={tab} index={canViewAll ? 2 : 1}>
-            {isLoading ? (
-              <Box sx={{ display: 'flex', justifyContent: 'center', py: 4 }}>
-                <CircularProgress />
-              </Box>
-            ) : (
-              <IssueTable issues={doneIssues} canManage={canManage} userId={userId} />
-            )}
+        {/* Tab 3: Kategorien (conditional) */}
+        {hasEditSettings && (
+          <TabPanel value={tab} index={tabs.findIndex(t => t.key === 'types')}>
+            <IssueTypeAdmin />
           </TabPanel>
         )}
       </Box>
@@ -446,13 +896,13 @@ export default function Issues() {
           <FormControl fullWidth>
             <InputLabel>Typ</InputLabel>
             <Select
-              value={form.typ || 'bug'}
+              value={form.typ_id ?? defaultTypId ?? ''}
               label="Typ"
-              onChange={(e) => setForm({ ...form, typ: e.target.value as Issue['typ'] })}
+              onChange={(e) => setForm({ ...form, typ_id: Number(e.target.value) })}
             >
-              <MenuItem value="bug">Bug</MenuItem>
-              <MenuItem value="feature">Feature</MenuItem>
-              <MenuItem value="sonstiges">Sonstiges</MenuItem>
+              {types.filter(t => t.aktiv).map(t => (
+                <MenuItem key={t.id} value={t.id}>{t.name}</MenuItem>
+              ))}
             </Select>
           </FormControl>
           <FormControl fullWidth>
@@ -473,7 +923,7 @@ export default function Issues() {
           <Button
             variant="contained"
             disabled={!form.titel.trim() || createMut.isPending}
-            onClick={() => createMut.mutate(form)}
+            onClick={() => createMut.mutate({ ...form, typ_id: form.typ_id ?? defaultTypId })}
           >
             Erstellen
           </Button>
diff --git a/frontend/src/services/issues.ts b/frontend/src/services/issues.ts
index 175462c..e914006 100644
--- a/frontend/src/services/issues.ts
+++ b/frontend/src/services/issues.ts
@@ -1,9 +1,16 @@
 import { api } from './api';
-import type { Issue, IssueComment, CreateIssuePayload, UpdateIssuePayload } from '../types/issue.types';
+import type { Issue, IssueComment, CreateIssuePayload, UpdateIssuePayload, IssueTyp, IssueFilters, AssignableMember } from '../types/issue.types';
 
 export const issuesApi = {
-  getIssues: async (): Promise<Issue[]> => {
-    const r = await api.get('/api/issues');
+  getIssues: async (filters?: IssueFilters): Promise<Issue[]> => {
+    const params = new URLSearchParams();
+    if (filters?.typ_id?.length) params.set('typ_id', filters.typ_id.join(','));
+    if (filters?.prioritaet?.length) params.set('prioritaet', filters.prioritaet.join(','));
+    if (filters?.status?.length) params.set('status', filters.status.join(','));
+    if (filters?.erstellt_von) params.set('erstellt_von', filters.erstellt_von);
+    if (filters?.zugewiesen_an) params.set('zugewiesen_an', filters.zugewiesen_an);
+    const qs = params.toString();
+    const r = await api.get(`/api/issues${qs ? `?${qs}` : ''}`);
     return r.data.data;
   },
   getIssue: async (id: number): Promise<Issue> => {
@@ -29,4 +36,25 @@ export const issuesApi = {
     const r = await api.post(`/api/issues/${issueId}/comments`, { inhalt });
     return r.data.data;
   },
+  // Types CRUD
+  getTypes: async (): Promise<IssueTyp[]> => {
+    const r = await api.get('/api/issues/typen');
+    return r.data.data;
+  },
+  createType: async (data: Partial<IssueTyp>): Promise<IssueTyp> => {
+    const r = await api.post('/api/issues/typen', data);
+    return r.data.data;
+  },
+  updateType: async (id: number, data: Partial<IssueTyp>): Promise<IssueTyp> => {
+    const r = await api.patch(`/api/issues/typen/${id}`, data);
+    return r.data.data;
+  },
+  deleteType: async (id: number): Promise<void> => {
+    await api.delete(`/api/issues/typen/${id}`);
+  },
+  // Members for assignment
+  getMembers: async (): Promise<AssignableMember[]> => {
+    const r = await api.get('/api/issues/members');
+    return r.data.data;
+  },
 };
diff --git a/frontend/src/types/issue.types.ts b/frontend/src/types/issue.types.ts
index 78f4031..d0c274a 100644
--- a/frontend/src/types/issue.types.ts
+++ b/frontend/src/types/issue.types.ts
@@ -1,8 +1,24 @@
+export interface IssueTyp {
+  id: number;
+  name: string;
+  parent_id: number | null;
+  icon: string | null;
+  farbe: string | null;
+  erlaubt_abgelehnt: boolean;
+  sort_order: number;
+  aktiv: boolean;
+  children?: IssueTyp[];
+}
+
 export interface Issue {
   id: number;
   titel: string;
   beschreibung: string | null;
-  typ: 'bug' | 'feature' | 'sonstiges';
+  typ_id: number;
+  typ_name: string;
+  typ_icon: string | null;
+  typ_farbe: string | null;
+  typ_erlaubt_abgelehnt: boolean;
   prioritaet: 'niedrig' | 'mittel' | 'hoch';
   status: 'offen' | 'in_bearbeitung' | 'erledigt' | 'abgelehnt';
   erstellt_von: string;
@@ -25,15 +41,29 @@ export interface IssueComment {
 export interface CreateIssuePayload {
   titel: string;
   beschreibung?: string;
-  typ?: 'bug' | 'feature' | 'sonstiges';
+  typ_id?: number;
   prioritaet?: 'niedrig' | 'mittel' | 'hoch';
 }
 
 export interface UpdateIssuePayload {
   titel?: string;
   beschreibung?: string;
-  typ?: 'bug' | 'feature' | 'sonstiges';
+  typ_id?: number;
   prioritaet?: 'niedrig' | 'mittel' | 'hoch';
   status?: 'offen' | 'in_bearbeitung' | 'erledigt' | 'abgelehnt';
   zugewiesen_an?: string | null;
+  kommentar?: string;
+}
+
+export interface IssueFilters {
+  typ_id?: number[];
+  prioritaet?: string[];
+  status?: string[];
+  erstellt_von?: string;
+  zugewiesen_an?: string;
+}
+
+export interface AssignableMember {
+  id: string;
+  name: string;
 }