Experienced Node.js API Development AgencyAPI Development
We build production-ready Node.js APIs in 8-12 weeks. Fixed pricing, senior engineers, and full code ownership.
IRPR builds high-performance Node.js APIs for web and mobile applications. We use Express.js, Fastify, and NestJS with PostgreSQL, Redis, and AWS Lambda.
We deliver APIs in 8-12 weeks with fixed pricing from $80K to $250K. Every API follows best practices for security, scalability, and documentation.
CTOs scaling backend infrastructure, startup founders needing rapid API development, and enterprise teams modernizing legacy systems hire us to build reliable Node.js APIs.
Types of software we ship.
REST API Development
Build scalable RESTful APIs with Express.js or Fastify. Includes OpenAPI docs, rate limiting, and authentication.
GraphQL API Development
Flexible GraphQL APIs using Apollo Server or Yoga. Reduce overfetching with typed schemas and resolvers.
gRPC API Development
High-performance gRPC APIs with Protocol Buffers. Ideal for microservices communication and low-latency use cases.
Microservices API Gateway
Gateways using Kong or Express Gateway. Route traffic, handle auth, and aggregate responses across services.
WebSocket / Real-time API
Real-time APIs with Socket.IO or native WebSockets. Power chat, live notifications, and streaming data feeds.
Third-party API Integration
Integrate Stripe, Twilio, Plaid, or Salesforce. We handle webhooks, rate limiting, and error retries.
Serverless API (AWS Lambda)
Serverless APIs using AWS Lambda and API Gateway. Auto-scale, pay per request, zero server management.
API Documentation & Testing
Generate OpenAPI 3.0 specs, Postman collections, and automated tests. Ensure every endpoint is documented and verified.
We build for every business type.
E-commerce
SaaS
Healthcare
Fintech
Media & Content
Why choose an experienced Node.js API development agency
IRPR has shipped over 200 production APIs for clients in 50+ countries.
We use proven patterns and rigorous testing to deliver APIs that handle millions of requests per day. Every API passes load testing at 10x expected peak traffic.
Our fixed price model means you know the cost upfront. No hourly surprises, no scope creep. We ship working code within 12 weeks or earlier.
How IRPR differs from generic dev shops
We don't treat APIs as a side project. Every API is built by senior engineers with a fixed scope and price.
Most agencies bill hourly and assign junior developers. You end up with incomplete documentation, no load testing, and hidden costs.
IRPR gives you a fixed price, a senior engineer from day one, and a full API package including documentation, CI/CD, and deployment scripts.
- Hourly billing with unclear totals
- Junior developers with limited oversight
- No API documentation shipped
- No load or stress testing
- No CI/CD pipeline included
- No post-launch support or warranty
- Fixed price per project
- Senior engineers only (10+ years avg)
- OpenAPI 3.0 specification shipped by default
- Load tested to 10x peak traffic
- CI/CD pipeline with GitHub Actions
- 30-day warranty on every API
Our proven Node.js API development process
We follow a 4-phase process that turns your requirements into a production-ready API in 8-12 weeks.
Each phase has clear milestones and deliverables. You review progress at every step, and changes are priced upfront.
The process is designed for speed without sacrificing quality. Reusable modules and battle-tested patterns cut development time by 30%.
What ships with every Node.js API project
We don't just send you code. Every API comes with a full set of deliverables that let your team start integrating immediately.
All documentation, tests, and deployment scripts are included in the fixed price. There are no add-ons or hidden fees.
- Source code in private GitHub repo
- OpenAPI 3.0 specification
- Postman collection for testing
- CI/CD pipeline with GitHub Actions
- Docker container ready
- Sentry error tracking
- Cloud deployment scripts (AWS)
- API performance benchmarks
- Developer onboarding guide
- Secure authentication (JWT/OAuth2)
What we ship in this practice.
E-commerce Checkout API
Built a payment processing API for a direct-to-consumer brand handling 50,000 transactions monthly. Reduced checkout time by 40% using Stripe integration and Redis caching. Node.js, Express.js, PostgreSQL, Stripe.
SaaS Billing API
Developed a subscription management API that automated billing for 10,000 users. Cut invoicing errors by 90% with Stripe Billing and webhook handling. NestJS, PostgreSQL, Stripe.
Healthcare FHIR API
Created a HIPAA-compliant API for patient data exchange. Achieved 99.99% uptime and reduced data retrieval time from 5 seconds to 300ms. Node.js, Fastify, FHIR, AWS Lambda.
Fintech Transaction API
Built a real-time transaction processing API with PCI-DSS compliance. Integrated with Plaid and Stripe to handle 1 million API calls per day. Express.js, Redis, MongoDB, Docker.
Real-time Chat API
Designed a WebSocket API for a social platform supporting 100,000 concurrent connections. Delivered messages with under 100ms latency. Node.js, Socket.IO, Redis, AWS ECS.
Logistics Tracking API
Developed a fleet tracking API for a logistics company managing 500 delivery vehicles. Enabled real-time GPS updates and reduced delivery delays by 25%. Node.js, Express.js, PostgreSQL, MQTT.
Why teams hire us.
Fixed Price, Not Hourly
Every project gets a fixed quote in the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges.
Senior Engineers Only
Our team averages 10+ years of experience. Each API is built by a senior engineer who reviews every line of code.
OpenAPI Documentation by Default
We ship every API with a complete OpenAPI 3.0 specification and Postman collection. Your frontend and mobile teams can integrate immediately.
99.9% Uptime Guarantee
We design APIs for high availability with auto-scaling and failover. Our own monitoring ensures you meet your SLAs.
Full Code Ownership
You own every line of code we write. No black boxes, no licensing fees, no vendor lock-in.
8-12 Week Delivery
Most APIs ship within 12 weeks. We use proven patterns and reusable modules to accelerate without cutting corners.
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.