Senior Node.js API Development CompanyAPI Development
We build production-grade Node.js APIs for SaaS, fintech, and healthcare platforms. 200+ products shipped in 12 weeks or less.
IRPR is a senior Node.js API development company. We build REST, GraphQL, and WebSocket APIs using Node.js, Express, Fastify, NestJS, PostgreSQL, Redis, Docker, and Kubernetes. Every API is designed for scale, security, and 99.9% uptime.
Projects ship in 12-14 weeks with a fixed price between $80K and $250K. We handle compliance: HIPAA for healthcare, PCI-DSS for fintech, SOC 2 for SaaS. Deliverables include source code, CI/CD pipelines, and automated tests.
Our clients are CTOs at B2B SaaS companies who need a scalable API backend, fintech founders building payment integrations, healthcare platform leads requiring HIPAA-compliant data exchange, and ecommerce ops directors connecting third-party logistics APIs.
Types of software we ship.
REST API Development
Build RESTful APIs with Node.js, Express, and PostgreSQL. Includes OpenAPI docs, rate limiting, and JWT auth.
GraphQL API Development
Develop GraphQL APIs using Apollo Server and Prisma. Supports real-time subscriptions and efficient data fetching.
Microservices API Development
Decompose monoliths into Node.js microservices with Docker, Kubernetes, and message queues like RabbitMQ.
Real-Time API (WebSocket)
Implement WebSocket APIs with Socket.io or ws for live updates, chat, and streaming data.
Third-Party API Integration
Connect your Node.js app to Stripe, HubSpot, Salesforce, or any external API. Includes error handling and retry logic.
API Gateway Development
Build an API gateway using Kong or Express Gateway for routing, authentication, and rate limiting across services.
Serverless API Development
Create serverless APIs on AWS Lambda with Node.js, using API Gateway and DynamoDB for auto-scaling.
Internal API Development
Design private APIs for internal microservices, event-driven architectures, and inter-service communication.
We build for every business type.
SaaS companies
Fintech companies
Healthcare companies
Ecommerce companies
Enterprise / Internal tools
Why you need a senior Node.js API development company
A junior team can build an API that works. A senior team builds one that scales, stays secure, and ships on time.
IRPR has delivered 200+ Node.js APIs for companies across 50 countries. Our senior engineers average 10+ years of experience. We use Node.js 20, Express 4, and PostgreSQL 16 to build APIs that handle 10,000+ requests per second.
Every API includes automated tests (Jest, Supertest), CI/CD via GitHub Actions, and monitoring with Sentry and Datadog. We enforce security from day one: input validation, rate limiting, and encrypted secrets.
The difference between generic dev shops and IRPR
Not all Node.js development companies are equal. Here is what sets IRPR apart.
Most generic dev shops assign junior developers, charge by the hour, and deliver late. They skip testing and leave you with an API that breaks in production.
IRPR assigns senior engineers only, gives a fixed price upfront, and ships in 12-14 weeks. Every API includes automated tests, CI/CD, and a 30-day warranty.
- Junior developers with 1-3 years experience
- Hourly billing with no cap
- No automated tests or CI/CD
- Delivers 3-6 months late
- No compliance expertise
- Code ownership unclear
- Senior engineers with 10+ years experience
- Fixed price from $80K to $250K
- Automated tests and CI/CD by default
- Ships in 12-14 weeks
- HIPAA, PCI-DSS, SOC 2 compliance built in
- You own 100% of the code
Our Node.js API development process
We follow a four-phase process: Idea, Roadmap, Product, Release. Each phase has clear deliverables and milestones.
In the Idea phase we map your requirements and choose the right architecture. The Roadmap phase delivers a fixed-price proposal with a detailed technical specification.
The Product phase is where we build your API in 8-10 weeks. The Release phase includes deployment, monitoring setup, and a 30-day warranty.
What ships with your Node.js API
Every project includes these deliverables by default. No hidden extras.
You get more than just an API. We deliver a full production-ready system with documentation, tests, and deployment scripts.
All code is in your repository from day one. We use GitHub for version control and project management.
- Source code in your private GitHub repository
- REST or GraphQL API with OpenAPI documentation
- Automated test suite (Jest, Supertest, 80%+ coverage)
- CI/CD pipeline on GitHub Actions
- Docker containers and docker-compose for local development
- Database schema and migrations (PostgreSQL or MongoDB)
- API monitoring with Sentry and Datadog
- Deployment scripts for AWS, GCP, or Azure
- 30-day post-launch warranty and support
What we ship in this practice.
Payment processing API for a fintech startup
Built a PCI-DSS compliant Node.js API that processes 10,000 transactions per day. Integrated with Stripe and Plaid. Reduced chargeback rate by 40% through real-time fraud detection. Tech stack: Node.js, Express, PostgreSQL, Redis, Stripe API.
HIPAA-compliant patient data API for a telehealth platform
Developed a GraphQL API that connects EHR systems (Epic, Cerner) and serves patient records to 500+ providers. Achieved HIPAA compliance with end-to-end encryption and audit logging. Tech stack: Node.js, Apollo Server, PostgreSQL, AWS KMS.
Real-time inventory API for an ecommerce marketplace
Created a WebSocket API that syncs inventory across 3 warehouses in real time. Reduced overselling by 95%. Handles 5,000 concurrent connections. Tech stack: Node.js, Socket.io, Redis, MongoDB.
Microservices API for a SaaS analytics platform
Decomposed a monolithic Rails app into 12 Node.js microservices. Each service handles a specific domain (users, events, reports). Decreased deployment time from 2 hours to 10 minutes. Tech stack: Node.js, Express, Docker, Kubernetes, RabbitMQ.
Third-party integration API for a real estate CRM
Built an integration layer that connects the CRM to MLS listings, Google Maps, and DocuSign. Automated data entry saved agents 8 hours per week. Tech stack: Node.js, Express, PostgreSQL, Zapier webhooks.
Serverless API for a mobile app backend
Developed a serverless Node.js API on AWS Lambda for a social media app with 100,000 users. Auto-scales from 0 to 10,000 requests per second. Cost reduced by 60% compared to EC2. Tech stack: Node.js, AWS Lambda, API Gateway, DynamoDB.
Why teams hire us.
Fixed price, not hourly
Every project gets a fixed quote after the Roadmap phase. No hourly billing, no surprise invoices. Our average project costs $80K-$250K.
Senior engineers only
Every developer on your project has 10+ years of experience. We do not outsource or use junior talent. You work directly with the team.
12-week MVP delivery
We ship a production-ready API in 12-14 weeks. Our process is optimized for speed without cutting corners on quality or testing.
Full code ownership
You own 100% of the source code, documentation, and infrastructure. No lock-in, no licensing fees. The code is yours from day one.
Compliance built in
We build HIPAA, PCI-DSS, and SOC 2 compliant APIs by default. Our team has completed 30+ compliance audits for clients.
Async-first, global team
We work async with overlap in US time zones. You get daily updates and weekly demos. No meetings for meetings sake.
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.