Best Node.js API Development FirmAPI Development
We build high-performance Node.js APIs that ship in 8-12 weeks. Fixed pricing from $80K, no hourly surprises.
IRPR is the best Node.js API development firm for companies that need reliable, fast, and secure APIs. We use Node.js with Express, NestJS, Fastify, and GraphQL to build REST and real-time APIs that handle millions of requests per day.
We ship a production-ready Node.js API in 8-12 weeks. Fixed pricing starts at $80K and goes to $250K for complex systems with microservices, WebSocket support, and third-party integrations. We comply with HIPAA, PCI-DSS, and SOC 2 out of the box.
Founders hire us when they need a scalable API for their SaaS product. CTOs hire us to replace legacy Java or Python APIs with faster Node.js endpoints. Product managers hire us to build API-first platforms that power mobile apps and web dashboards.
Types of software we ship.
REST API Development
Builds stateless, cacheable REST endpoints using Express or Fastify. Supports versioning, rate limiting, and Swagger/OpenAPI docs.
GraphQL API Development
Creates flexible GraphQL APIs with Apollo Server or Yoga. Enables frontend-driven queries and real-time subscriptions.
Real-Time API Development
Builds WebSocket and SSE-based APIs for live chat, notifications, and dashboards. Uses Socket.io and Redis Pub/Sub.
Microservices API Development
Designs distributed API systems with Node.js microservices. Uses message queues (RabbitMQ, Kafka) and Docker orchestration.
Third-Party API Integration
Connects your Node.js API to Stripe, Twilio, SendGrid, Slack, HubSpot, Salesforce, and 200+ other services.
API Gateway Development
Builds centralized gateways for routing, authentication, and rate limiting. Supports OAuth2, JWT, and API key management.
Serverless API Development
Creates serverless Node.js APIs on AWS Lambda, Vercel, or Netlify. Auto-scales to zero cost when idle.
API Documentation & Testing
Generates interactive API docs with Postman collections and automated test suites using Jest and Supertest.
We build for every business type.
SaaS & Platforms
Ecommerce & Retail
Healthcare & Fintech
Real Estate & Proptech
Data & Analytics
Why IRPR is the Best Node.js API Development Firm
Our Node.js APIs handle 10,000+ requests per second in production.
IRPR has shipped over 200 Node.js APIs for clients in 50 countries. Each API is built by senior engineers with 10+ years of experience. We use Node.js 20, TypeScript, and the latest LTS releases. Every API includes automated testing (95%+ coverage), error tracking with Sentry, and uptime monitoring with Datadog.
We write APIs that are easy to maintain and extend. Our code uses async/await, proper error handling, and follows the SOLID principles. We structure projects with clear separation of concerns: controllers, services, repositories, and middleware. This means your team can take over development without a steep learning curve.
Generic Dev Shops vs the Best Node.js API Firm
Most agencies write Node.js code that grows into a maintenance nightmare.
Generic dev shops often assign junior developers to Node.js projects. They use outdated patterns like callbacks, mix of sync and async, and no TypeScript. Their APIs lack proper error handling, rate limiting, and documentation. After 6 months, your API becomes unmanageable.
IRPR assigns only senior Node.js engineers. We write TypeScript, use Express or NestJS with middleware pipelines, and include Swagger docs from day one. Every API has a CI/CD pipeline with automated tests and linting. We deliver a clean, documented codebase that your team can extend.
- Junior devs with 1-2 years of Node.js
- No TypeScript, no tests
- No API documentation
- No rate limiting or auth middleware
- Manual deploys, no CI/CD
- Code you cannot maintain after handoff
- Senior engineers with 10+ years of Node.js
- TypeScript with 95%+ test coverage
- Swagger/OpenAPI docs auto-generated
- JWT, OAuth2, rate limiting built in
- CI/CD pipeline on GitHub Actions
- Full code ownership, documented codebase
How We Build Your Node.js API
Our 4-phase process delivers a production-ready API in 8-12 weeks.
We start with a 1-week Discovery phase where we map out every API endpoint, data model, and integration. You get a detailed technical specification and a fixed price quote. No guesswork, no surprises.
Then we build in 2-week sprints. Every sprint ends with a deployable API that you can test. We use feedback loops so you see progress and can adjust requirements as we go.
What Ships with Your Node.js API
Every API comes with production-grade tooling and documentation.
We do not just deliver code. We deliver a complete API system that is ready to scale. You get source code, infrastructure, monitoring, and documentation. Your team can take over immediately.
All projects include a private GitHub repository, automated deployments, error tracking, and performance monitoring. We also provide a Postman collection for testing and a developer guide for your frontend team.
- Source code in your GitHub repo (full ownership)
- CI/CD pipeline on GitHub Actions with Jest + Supertest tests
- Swagger/OpenAPI documentation auto-generated
- Sentry error tracking with alerting
- Datadog APM monitoring for API performance
- Redis caching layer for high-traffic endpoints
- Docker Compose setup for local development
- Postman collection with example requests
- Deployment playbook for AWS, GCP, or your own server
What we ship in this practice.
SaaS Payment Processing API
Built a Node.js API with Express and Stripe integration for a subscription SaaS. Handles 50,000+ payment events per month. Reduced billing errors by 90% and cut payment processing time from 2 days to real-time.
Telemedicine Video Chat API
Developed a WebSocket-based Node.js API with Twilio Video for a healthcare startup. Supports 500+ concurrent patient-provider calls. Achieved HIPAA compliance and 99.9% uptime since launch.
MLS Property Search API
Created a GraphQL API with NestJS and PostgreSQL that aggregates data from 3 MLS providers. Powers property search for 200+ real estate agents. Reduced search latency from 4 seconds to 200 milliseconds.
Fintech Customer Dashboard API
Built a REST API with Fastify and Redis for a fintech startup serving 10,000+ users. Handles account transactions, balances, and notifications. Achieved PCI-DSS compliance and sub-50ms response times.
Ecommerce Order Management API
Developed a microservices API with Node.js and RabbitMQ for an online retailer. Orchestrates orders, inventory, and shipping across 5 warehouses. Reduced order processing time from 15 minutes to 30 seconds.
EdTech Learning Platform API
Created a serverless Node.js API on AWS Lambda for a learning platform. Supports 10,000+ concurrent students. Maintains FERPA compliance and auto-scales to zero cost during off-peak hours.
Why teams hire us.
Senior Engineers Only
Every Node.js engineer at IRPR has 10+ years of experience. We do not staff juniors. Your API is built by someone who has shipped 30+ production Node.js APIs.
Fixed Price, Not Hourly
You get a fixed price quote after the Discovery phase. No hourly billing, no time tracking, no surprise invoices. The price we quote is the price you pay.
TypeScript + 95% Test Coverage
All APIs are written in TypeScript with async/await and proper error handling. We write unit and integration tests with Jest and Supertest, achieving 95%+ coverage.
CI/CD and Monitoring Included
Every API ships with a CI/CD pipeline (GitHub Actions), automated tests, Sentry error tracking, and Datadog performance monitoring. You know when something breaks before your users do.
Full Code Ownership
You own all source code, documentation, and infrastructure configurations. No lock-in, no license fees, no recurring costs. We give you a complete codebase your team can maintain.
8-12 Week Delivery Guarantee
We ship production-ready APIs in 8-12 weeks. Our 2-week sprint cycle means you see working software every 14 days. 98% of our projects deliver on time.
Idea → Roadmap → Product → Release.
Every engagement runs through the same four-stage pipeline. Predictable by design.
Questions clients ask first.
Related services and industries.
Ready to build? Let's talk.
30-minute discovery call. No deck. We'll tell you honestly what it takes, how long, and how much.