diff --git a/myteamwallet_frontend_modern/src/app/core/notifications/notifications-store.spec.ts b/myteamwallet_frontend_modern/src/app/core/notifications/notifications-store.spec.ts
new file mode 100644
index 0000000..172e0bf
--- /dev/null
+++ b/myteamwallet_frontend_modern/src/app/core/notifications/notifications-store.spec.ts
@@ -0,0 +1,102 @@
+import { TestBed } from '@angular/core/testing';
+import { of } from 'rxjs';
+import { NotificationsApi } from './notifications-api';
+import { NotificationsStore } from './notifications-store';
+
+describe('NotificationsStore', () => {
+  let api: {
+    loadUnreadCount: ReturnType<typeof vi.fn>;
+    loadNotifications: ReturnType<typeof vi.fn>;
+    markRead: ReturnType<typeof vi.fn>;
+    markAllRead: ReturnType<typeof vi.fn>;
+  };
+  let store: NotificationsStore;
+
+  beforeEach(() => {
+    api = {
+      loadUnreadCount: vi.fn().mockReturnValue(of({ count: 0 })),
+      loadNotifications: vi.fn().mockReturnValue(of({ data: [], page: 1, limit: 20, total: 0, hasNextPage: false })),
+      markRead: vi.fn().mockReturnValue(of(undefined)),
+      markAllRead: vi.fn().mockReturnValue(of(undefined)),
+    };
+    TestBed.configureTestingModule({ providers: [{ provide: NotificationsApi, useValue: api }] });
+    store = TestBed.inject(NotificationsStore);
+  });
+
+  it('polls the unread count immediately when polling starts for a team', () => {
+    api.loadUnreadCount.mockReturnValue(of({ count: 4 }));
+
+    store.startPolling(10);
+
+    expect(api.loadUnreadCount).toHaveBeenCalledWith(10);
+    expect(store.unreadCount()).toBe(4);
+  });
+
+  it('does not start a second poll loop for the same team id', () => {
+    store.startPolling(10);
+    store.startPolling(10);
+
+    expect(api.loadUnreadCount).toHaveBeenCalledTimes(1);
+  });
+
+  it('switches polling to a newly routed team', () => {
+    store.startPolling(10);
+    api.loadUnreadCount.mockReturnValue(of({ count: 7 }));
+
+    store.startPolling(11);
+
+    expect(api.loadUnreadCount).toHaveBeenCalledWith(11);
+    expect(store.unreadCount()).toBe(7);
+  });
+
+  it('loads the recent notification list', () => {
+    const data = [
+      {
+        id: 1,
+        event: 'player_creation' as const,
+        actorUserId: 9,
+        payload: { playerId: 21, playerName: 'Ada Lovelace' },
+        read: false,
+        createdAt: '2026-08-04T10:00:00.000Z',
+      },
+    ];
+    api.loadNotifications.mockReturnValue(of({ data, page: 1, limit: 20, total: 1, hasNextPage: false }));
+
+    store.loadRecent(10);
+
+    expect(api.loadNotifications).toHaveBeenCalledWith(10, { page: 1, limit: 20 });
+    expect(store.notifications()).toEqual(data);
+  });
+
+  it('marks a notification as read locally and decrements the unread count', () => {
+    api.loadUnreadCount.mockReturnValue(of({ count: 3 }));
+    store.startPolling(10);
+    const data = [
+      { id: 1, event: 'player_creation' as const, actorUserId: 9, payload: {}, read: false, createdAt: 'x' },
+    ];
+    api.loadNotifications.mockReturnValue(of({ data, page: 1, limit: 20, total: 1, hasNextPage: false }));
+    store.loadRecent(10);
+
+    store.markRead(10, 1);
+
+    expect(api.markRead).toHaveBeenCalledWith(10, 1);
+    expect(store.notifications()[0].read).toBe(true);
+    expect(store.unreadCount()).toBe(2);
+  });
+
+  it('marks all notifications as read locally and zeroes the unread count', () => {
+    api.loadUnreadCount.mockReturnValue(of({ count: 5 }));
+    store.startPolling(10);
+    const data = [
+      { id: 1, event: 'player_creation' as const, actorUserId: 9, payload: {}, read: false, createdAt: 'x' },
+    ];
+    api.loadNotifications.mockReturnValue(of({ data, page: 1, limit: 20, total: 1, hasNextPage: false }));
+    store.loadRecent(10);
+
+    store.markAllRead(10);
+
+    expect(api.markAllRead).toHaveBeenCalledWith(10);
+    expect(store.notifications()[0].read).toBe(true);
+    expect(store.unreadCount()).toBe(0);
+  });
+});
diff --git a/myteamwallet_frontend_modern/src/app/core/notifications/notifications-store.ts b/myteamwallet_frontend_modern/src/app/core/notifications/notifications-store.ts
new file mode 100644
index 0000000..413a64d
--- /dev/null
+++ b/myteamwallet_frontend_modern/src/app/core/notifications/notifications-store.ts
@@ -0,0 +1,71 @@
+import { Injectable, inject, signal } from '@angular/core';
+import { takeUntilDestroyed } from '@angular/core/rxjs-interop';
+import { Subject, interval } from 'rxjs';
+import { startWith, switchMap } from 'rxjs/operators';
+import { NotificationItem } from '../../models/notification.model';
+import { NotificationsApi } from './notifications-api';
+
+const POLL_INTERVAL_MS = 30000;
+const DROPDOWN_PAGE_SIZE = 20;
+
+@Injectable({ providedIn: 'root' })
+export class NotificationsStore {
+  private readonly api = inject(NotificationsApi);
+
+  private readonly unreadCountSignal = signal(0);
+  private readonly notificationsSignal = signal<NotificationItem[]>([]);
+  private readonly loadingSignal = signal(false);
+  private readonly pollingTeamId = signal<number | null>(null);
+  private readonly pollRequests = new Subject<number>();
+
+  readonly unreadCount = this.unreadCountSignal.asReadonly();
+  readonly notifications = this.notificationsSignal.asReadonly();
+  readonly loading = this.loadingSignal.asReadonly();
+
+  constructor() {
+    this.pollRequests
+      .pipe(
+        switchMap((teamId) =>
+          interval(POLL_INTERVAL_MS).pipe(
+            startWith(-1),
+            switchMap(() => this.api.loadUnreadCount(teamId)),
+          ),
+        ),
+        takeUntilDestroyed(),
+      )
+      .subscribe((result) => this.unreadCountSignal.set(result.count));
+  }
+
+  startPolling(teamId: number): void {
+    if (this.pollingTeamId() === teamId) return;
+    this.pollingTeamId.set(teamId);
+    this.pollRequests.next(teamId);
+  }
+
+  loadRecent(teamId: number): void {
+    this.loadingSignal.set(true);
+    this.api.loadNotifications(teamId, { page: 1, limit: DROPDOWN_PAGE_SIZE }).subscribe({
+      next: (page) => {
+        this.notificationsSignal.set(page.data);
+        this.loadingSignal.set(false);
+      },
+      error: () => this.loadingSignal.set(false),
+    });
+  }
+
+  markRead(teamId: number, id: number): void {
+    this.api.markRead(teamId, id).subscribe(() => {
+      this.notificationsSignal.update((items) =>
+        items.map((item) => (item.id === id ? { ...item, read: true } : item)),
+      );
+      this.unreadCountSignal.update((count) => Math.max(0, count - 1));
+    });
+  }
+
+  markAllRead(teamId: number): void {
+    this.api.markAllRead(teamId).subscribe(() => {
+      this.notificationsSignal.update((items) => items.map((item) => ({ ...item, read: true })));
+      this.unreadCountSignal.set(0);
+    });
+  }
+}