ABUBAKAR
MAHMOOD

Off-grid peer-to-peer messaging prototype with BLE discovery, secure sessions, encrypted archives, offline queues, and custom relay/routing design.

Incident-management API with JWT auth, priority-based SLA assignment, scheduled breach workers, migrations, and service-layer tests.

Offline-first prayer-time and mosque Jamaat scheduler with local persistence, timing-rule resolution, backup/import, Qibla tools, widgets, and tests.

GraphQL gateway that federates public REST APIs with caching, DataLoader batching, persisted queries, rate limits, subscriptions, tests, and Docker config.

Emergency-response simulator using dynamic weighted graphs, Dijkstra/A* routing, custom indexed heap, CSV scenarios, and JUnit-tested dispatch logic.