Backend & API Development
Secure, scalable server-side systems.
We build RESTful and GraphQL APIs with Node.js, Firebase Cloud Functions, and PostgreSQL. Designed for reliability, observability, and horizontal scale from day one.
What's included
Features & Capabilities
- Node.js / Express APIs
- Firebase Cloud Functions
- PostgreSQL / MongoDB
- JWT & OAuth 2.0 auth
- Webhook integrations
- API documentation
How we work
Our Process
- 01
Requirements
API contract definition, data modelling, and security planning.
- 02
Architecture
Microservice vs monolith analysis, database schema design.
- 03
Development
TDD-driven API development with integration tests.
- 04
Deployment
Cloud deployment, monitoring setup, and documentation.
Our work
Backend & API Development Projects
FAQ
Common Questions
01What backend technologies do you use?
We primarily use Node.js with Express for REST APIs, Firebase Cloud Functions for serverless backends, and Spring Boot for Java-based enterprise APIs. We've also worked with Python backends. We choose based on your project's scale, team, and existing infrastructure.
02Can you build REST APIs and integrate third-party services?
Yes. REST API design and development is our core backend offering. We've integrated Razorpay, Stripe, Firebase Auth, Google Maps, WhatsApp Business API, and various CRM and ERP systems. We document all APIs using OpenAPI/Swagger.
03Can you integrate Firebase or SQL databases?
Yes. We work with Firebase Firestore (NoSQL) and Cloud Storage for real-time apps, and with PostgreSQL and MySQL for relational data requirements. We help you choose the right database architecture for your use case and scale.
04How do you handle API security?
We implement JWT authentication, OAuth 2.0, rate limiting, input validation, and HTTPS enforcement as standard. For sensitive data we apply field-level encryption and access control rules. Security is planned at the architecture stage — not added later.
Areas We Serve
Based in Mahipalpur, New Delhi, NF Nexa Tech provides backend & api development services to businesses in Delhi and remotely across India.
Ready to start your backend & api development project?
Tell us about your project. We'll respond the same day and send you a detailed proposal within 48 hours.
More services