FintechYouTube Demo
Crypto Trading Platform
High-throughput order books, live candles, and signed API auth.
FlutterNode.jsWebSocketsREST APIs
- High-throughput real-time order books
- Live candle charting without UI jank
Backend & API Development
Node.js services, REST APIs, Firebase backends, data integrations, and maintainable contracts for client applications.
What this service covers
I build and integrate backend services around clear contracts. That includes authentication, validation, normalized response models, third-party adapters, errors, retries, and the operational concerns a mobile or web client needs in production.
What I provide
- REST API design and implementation
- Authentication and authorization integration
- Database and Firebase integration
- Third-party API adapters
- Validation and error contracts
- API documentation and handover
Typical delivery process
- 1
Document consumers, resources, and failure modes
- 2
Define stable request and response contracts
- 3
Implement validation, adapters, and observability
- 4
Test integrations independently from the client UI
Related Project Work
Healthcare / Hospital ManagementCase Study
Hospital Management System (HMS)
Enterprise-grade multi-branch HMS unifying 16 clinical and administrative modules.
Next.jsReactTypeScriptSupabase+5
- Multi-branch web portal unifying 16 clinical & administrative modules
- Strict Role-Based Access Control (RBAC) with PostgreSQL Row-Level Security (RLS)
Social CareApp Store & Google Play
Architecture — Social Care Management
Operational social-care workflows on Flutter, Firebase, and offline storage.
FlutterDartFirebaseFirestore+4
- Role-aware operational workflows used daily in the UK
- Firebase Auth, Firestore, and Cloud Functions
Need backend & api development?
Share your product stage, platform constraints, and integration targets. Let's engineer a resilient solution.