diff --git a/apps/api/src/app.module.ts b/apps/api/src/app.module.ts
index 28dd07e..9da6863 100644
--- a/apps/api/src/app.module.ts
+++ b/apps/api/src/app.module.ts
@@ -20,6 +20,7 @@ import { PrismaModule } from './prisma/prisma.module';
 import { SettingsModule } from './settings/settings.module';
 import { TenantGuard } from './tenant/tenant.guard';
 import { TenantModule } from './tenant/tenant.module';
+import { TendersModule } from './tenders/tenders.module';
 import { UserModule } from './user/user.module';
 
 @Module({
@@ -41,6 +42,7 @@ import { UserModule } from './user/user.module';
     SettingsModule,
     DkvModule,
     FavoritesModule,
+    TendersModule,
   ],
   providers: [
     // Global JWT guard: all routes require auth unless @Public()
diff --git a/apps/api/src/tenders/tenders.module.ts b/apps/api/src/tenders/tenders.module.ts
new file mode 100644
index 0000000..8f3491f
--- /dev/null
+++ b/apps/api/src/tenders/tenders.module.ts
@@ -0,0 +1,61 @@
+import { Logger, Module, OnModuleInit } from '@nestjs/common';
+import { ModuleRegistryModule } from '../module-registry/module-registry.module';
+import { ModuleRegistryService } from '../module-registry/module-registry.service';
+import { PrismaService } from '../prisma/prisma.service';
+import { seedTendersModule } from './tenders.seed';
+
+/**
+ * NestJS module for the Ausschreibungs-Radar feature.
+ *
+ * Wave 2 (this plan) only registers the module in the marketplace and
+ * seeds the singleton DÖE poll config so the shared poll is
+ * admin-drivable. Ingestion/adapter/scheduler/controller wiring is
+ * added in Plans 03-05.
+ *
+ * PrismaModule is global (no explicit import needed).
+ *
+ * Seeds itself into the module registry on application startup via
+ * OnModuleInit lifecycle hook — same pattern as DkvModule.
+ */
+@Module({
+  imports: [ModuleRegistryModule],
+  controllers: [],
+  providers: [],
+})
+export class TendersModule implements OnModuleInit {
+  private readonly logger = new Logger(TendersModule.name);
+
+  constructor(
+    private readonly moduleRegistryService: ModuleRegistryService,
+    private readonly prisma: PrismaService,
+  ) {}
+
+  async onModuleInit(): Promise<void> {
+    try {
+      await seedTendersModule(this.moduleRegistryService);
+      this.logger.log('Ausschreibungs-Radar module seeded in registry');
+    } catch (error) {
+      this.logger.error('Failed to seed Ausschreibungs-Radar module', error);
+    }
+
+    try {
+      // Singleton poll config — global, RLS-exempt (D-03). Do NOT use
+      // forTenant() here: this row is shared platform-wide, not per-tenant.
+      // isActive defaults true so the platform-global DÖE poll (D-04
+      // hourly) runs regardless of tenant activation; the day-cursor
+      // gate (Plan 04) makes repeated ticks idempotent.
+      await this.prisma.tenderSourcePollConfig.upsert({
+        where: { sourceType: 'doe-opendata' },
+        update: {},
+        create: {
+          sourceType: 'doe-opendata',
+          pollIntervalMin: 60,
+          isActive: true,
+        },
+      });
+      this.logger.log('doe-opendata poll config seeded');
+    } catch (error) {
+      this.logger.error('Failed to seed doe-opendata poll config', error);
+    }
+  }
+}
diff --git a/apps/api/src/tenders/tenders.seed.ts b/apps/api/src/tenders/tenders.seed.ts
new file mode 100644
index 0000000..55e305f
--- /dev/null
+++ b/apps/api/src/tenders/tenders.seed.ts
@@ -0,0 +1,26 @@
+import { ModuleRegistryService } from '../module-registry/module-registry.service';
+
+/**
+ * Seeds the tender-radar module into the module registry.
+ *
+ * Called during TendersModule initialization to ensure the
+ * "tender-radar" module record exists in the database (CONFIG-01).
+ *
+ * isSystem: true registers the module in the registry but does NOT
+ * auto-activate it per tenant. Admin must activate via Marketplace UI.
+ */
+export async function seedTendersModule(
+  moduleRegistryService: ModuleRegistryService,
+): Promise<void> {
+  await moduleRegistryService.seedModule({
+    slug: 'tender-radar',
+    name: 'Ausschreibungs-Radar',
+    version: '1.0.0',
+    category: 'procurement',
+    description: {
+      de: 'Deutsche Ausschreibungen automatisch erfassen und durchsuchen',
+      en: 'Automatically track and search German public tenders',
+    },
+    isSystem: true,
+  });
+}