API Development and Service Integration in TypeScript/Node.jsSofwan Lawal
Build reliable, scalable APIs with clean architecture and seamless integrations. With over 9 years of backend experience, I help startups and growing teams design and implement RESTful and GraphQL APIs in TypeScript using Node.js (Express, NestJS, or custom stacks).
Whether you need a new API built from scratch, an existing one refactored, or third-party services integrated (Stripe, Twilio, Firebase, etc.), I deliver production-ready solutions with performance, testability, and maintainability in mind.
You’ll get a well-documented, versioned, and future-proof API your frontend and partner teams will love working with.
What's included
API Design Blueprint
API spec with routes, methods, request/response structures, and error handling. Shared via Swagger/OpenAPI or Postman collection.
Fully Functional API (REST or GraphQL)
A complete API built in TypeScript using Node.js frameworks (Express, NestJS, or custom), including validation, middleware, and structured modules.
Third-party Service Integration
Integration with external APIs or services (e.g., Stripe, Firebase, SendGrid, AWS, etc.) with proper abstraction.
Unit & Integration Tests
Tests for routes, controllers, and core logic to ensure stability and catch regressions early.
Environment Configs & Dev Scripts
Ready-to-run dev setup with .env configuration, seed scripts, and clear documentation.
API Documentation
Developer-friendly API docs for internal or external usage, generated automatically or manually written.
Post-Delivery Support (2 Weeks)
I’ll be available for questions or minor adjustments after delivery to ensure a smooth handoff.
FAQs
Elysia.js for flexibility, NestJS for structure-heavy projects. I can also work with custom or minimal stacks if needed.
Yes. I work with PostgreSQL, MySQL, MongoDB, and Redis. I can set up the schema, models, and migrations using ORM or raw SQL.
Absolutely. I can step in to clean up architecture, modularise logic, improve error handling, or boost performance.
Yes — using tools like Apollo Server and TypeGraphQL. Let me know if you're going GraphQL-first.
Deployment to platforms like AWS, Render, Railway, or DigitalOcean is available as an add-on.
Yes. I offer monthly retainer options for continuous API maintenance, feature extension, and integration work.
Contact for pricing
Tags
AWS
Docker
GraphQL
Rust
TypeScript
Backend Engineer
DevOps Engineer
Fullstack Engineer
Service provided by
Sofwan Lawal Ilorin, Nigeria
API Development and Service Integration in TypeScript/Node.jsSofwan Lawal
Contact for pricing
Tags
AWS
Docker
GraphQL
Rust
TypeScript
Backend Engineer
DevOps Engineer
Fullstack Engineer
Build reliable, scalable APIs with clean architecture and seamless integrations. With over 9 years of backend experience, I help startups and growing teams design and implement RESTful and GraphQL APIs in TypeScript using Node.js (Express, NestJS, or custom stacks).
Whether you need a new API built from scratch, an existing one refactored, or third-party services integrated (Stripe, Twilio, Firebase, etc.), I deliver production-ready solutions with performance, testability, and maintainability in mind.
You’ll get a well-documented, versioned, and future-proof API your frontend and partner teams will love working with.
What's included
API Design Blueprint
API spec with routes, methods, request/response structures, and error handling. Shared via Swagger/OpenAPI or Postman collection.
Fully Functional API (REST or GraphQL)
A complete API built in TypeScript using Node.js frameworks (Express, NestJS, or custom), including validation, middleware, and structured modules.
Third-party Service Integration
Integration with external APIs or services (e.g., Stripe, Firebase, SendGrid, AWS, etc.) with proper abstraction.
Unit & Integration Tests
Tests for routes, controllers, and core logic to ensure stability and catch regressions early.
Environment Configs & Dev Scripts
Ready-to-run dev setup with .env configuration, seed scripts, and clear documentation.
API Documentation
Developer-friendly API docs for internal or external usage, generated automatically or manually written.
Post-Delivery Support (2 Weeks)
I’ll be available for questions or minor adjustments after delivery to ensure a smooth handoff.
FAQs
Elysia.js for flexibility, NestJS for structure-heavy projects. I can also work with custom or minimal stacks if needed.
Yes. I work with PostgreSQL, MySQL, MongoDB, and Redis. I can set up the schema, models, and migrations using ORM or raw SQL.
Absolutely. I can step in to clean up architecture, modularise logic, improve error handling, or boost performance.
Yes — using tools like Apollo Server and TypeGraphQL. Let me know if you're going GraphQL-first.
Deployment to platforms like AWS, Render, Railway, or DigitalOcean is available as an add-on.
Yes. I offer monthly retainer options for continuous API maintenance, feature extension, and integration work.
Contact for pricing