Experienced Node.js API Development ConsultantsAPI Development
We build production-grade Node.js APIs in 12 weeks. Fixed price, senior engineers only, zero surprises.
IRPR's experienced Node.js API development consultants build RESTful and GraphQL APIs for web, mobile, and SaaS products. We use Express.js, Fastify, or NestJS for the server layer, PostgreSQL or MongoDB for data, and Redis for caching. Every API is delivered with OpenAPI/Swagger docs, automated tests, and a CI/CD pipeline.
A typical custom Node.js API ships in 12 to 14 weeks with a fixed price between $80K and $250K. We handle compliance for HIPAA, PCI-DSS, SOC 2, and FERPA. After launch, your team owns the source code, the repo, and the cloud infrastructure.
Founders hire us when they need a production-ready API for their MVP. CTOs hire us to rebuild a monolithic backend into microservices. Engineering managers hire us to integrate third-party APIs (Stripe, Salesforce, HubSpot) without breaking existing systems.
Types of software we ship.
REST API for SaaS product
Build a multi-tenant REST API with authentication, rate limiting, and webhook support for your SaaS platform.
GraphQL API for frontend apps
Design a GraphQL schema using Apollo Server that lets React or Vue apps query exactly the data they need.
Third-party API integration
Connect your product to Stripe, Salesforce, HubSpot, or Twilio with retry logic, error handling, and data sync.
Microservices API gateway
Deploy an API gateway using Express Gateway or Kong to route, throttle, and authenticate traffic between microservices.
Real-time API with WebSockets
Add real-time features using Socket.io or WebSockets for chat, live notifications, or collaborative editing in Node.js.
Data processing API
Build a Node.js API that ingests, processes, and transforms data from CSV, JSON, or Excel sources with Bull queue.
Internal tool API
Create a private API for your operations team that connects internal tools (Slack, Jira, Airtable) into one interface.
Serverless API on AWS Lambda
Develop a serverless Node.js API using AWS Lambda, API Gateway, and DynamoDB for auto-scaling and pay-per-use pricing.
We build for every business type.
SaaS and platforms
Ecommerce and payments
Healthcare and fintech
Real estate and property
Logistics and manufacturing
Why companies hire experienced Node.js API development consultants
Building a reliable API in-house takes months and risks security holes. IRPR delivers production-ready APIs on time and on budget.
Your internal team may be strong on React or Python, but Node.js API development requires deep knowledge of async patterns, error handling, and database optimization. IRPR's consultants have shipped over 200 APIs for clients in 50 countries. We know how to design endpoints that scale from 100 to 100,000 requests per day.
Every API we build includes automated tests (Mocha, Jest, or Supertest), performance benchmarks, and a documented Postman collection. We also set up monitoring with Sentry and Datadog so your team knows the moment an endpoint slows down. No handoffs, no gaps.
The difference between a freelance Node.js dev and IRPR's consulting team
Freelancers disappear. Agencies upsell. IRPR delivers a complete API with ownership in your hands.
When you hire a freelance Node.js developer, you take on risk: no backup if they get sick, no code review, no deployment pipeline. When you hire a dev shop, they often use junior developers and charge hourly. IRPR assigns a team of senior engineers (each has 8+ years of Node.js experience) and gives you a fixed price upfront.
Our process is transparent: you get a Roadmap in week 2 with the full spec and exact timeline. You approve it, and we build. If priorities change, we adapt. At the end, you own the code, the repo, the AWS account, and the monitoring tools.
- hourly billing that rewards slow work
- junior or mid-level engineers assigned
- no written Roadmap before building
- handoff at the end with no docs
- code often needs rewriting by your team
- no post-launch support included
- fixed price from the Roadmap phase
- senior engineers only (8+ years Node.js)
- written Roadmap with endpoint specs in week 2
- full OpenAPI docs, Postman collection, test suite
- code delivered in your repo, your cloud account
- 30-day support window after launch
Our API development process: from idea to production in 12 weeks
We follow a four-phase process that de-risks your investment and delivers a working API fast.
Phase 1 is the Idea call where we map your business requirements to API endpoints and data models. Phase 2 is the Roadmap where we deliver a 2-week sprint plan with wireframes, schema design, and a fixed price. Phase 3 is building the API in 8 to 10 weeks with bi-weekly demos. Phase 4 is the Release where we deploy to your AWS or GCP account and run load tests.
During the build phase, your team gets access to a staging environment after week 4. You can test endpoints, connect your frontend, and give feedback. We use GitFlow, code reviews, and automated CI/CD pipelines on GitHub Actions. Every merge runs tests and linters.
What ships with every Node.js API we build
You get more than an API. You get a complete delivery package that your engineering team can run from day one.
Every project includes source code in your private GitHub repo, a working CI/CD pipeline, and production infrastructure in your own AWS, GCP, or Azure account. We also ship test coverage reports and a monitoring dashboard.
Your team receives a Postman collection with every endpoint documented, a Swagger/OpenAPI spec, and a runbook explaining how to deploy, scale, and debug. There are no hidden fees, no licensing costs, and no ongoing obligations.
- Source code in your GitHub repo with full commit history
- CI/CD pipeline on GitHub Actions with automated test runs
- Sentry error tracking and Datadog performance monitoring
- OpenAPI 3.0 spec with all endpoints documented
- Postman collection for manual testing and demos
- Load test results using k6 (1000 concurrent users minimum)
- Deployment guide and runbook in Markdown
- Staging environment available in week 4
- 30-day post-release support SLA
What we ship in this practice.
SaaS billing API for subscription platform
Built a multi-tenant billing API using Node.js, Stripe, and PostgreSQL. Handled 50,000 subscription events per month. Reduced billing errors by 90% and cut payment processing time from 4 days to instant. Tech stack: Node.js, Express, Stripe, PostgreSQL, Redis.
Telehealth patient API for HIPAA compliance
Developed a patient-facing API for scheduling, video visits, and prescription management. Met HIPAA requirements with end-to-end encryption and audit logs. Handled 10,000 patient requests per day. Tech stack: Node.js, Fastify, MongoDB, Twilio Video, AWS KMS.
Real-time logistics tracking API
Created a WebSocket-based tracking API for a fleet of 500 delivery vehicles. Updated location every 5 seconds. Reduced customer support calls by 70%. Tech stack: Node.js, Socket.io, Redis, PostgreSQL, Google Maps API.
Payment gateway API for fintech startup
Built a payment processing API that integrates with Stripe, Plaid, and PayPal. Achieved PCI-DSS Level 1 compliance. Processed $2 million in transactions in the first month. Tech stack: Node.js, Express, Stripe, Plaid, PostgreSQL.
Property search API for real estate platform
Designed a GraphQL API connecting MLS data, mortgage calculators, and virtual tour providers. Served 200,000 property search queries per day with sub-200ms response times. Tech stack: Node.js, Apollo Server, Elasticsearch, PostgreSQL, AWS Lambda.
Learning management API for EdTech platform
Built a FERPA-compliant API for course enrollment, progress tracking, and grade posting. Integrated with Canvas and Blackboard. Scaled to 50,000 concurrent students without downtime. Tech stack: Node.js, NestJS, PostgreSQL, Redis, AWS ECS.
Why teams hire us.
Senior engineers only, no juniors
Every IRPR consultant has 8+ years of Node.js experience. We assign a lead engineer who has shipped at least 10 production APIs. No offshore teams, no fresh graduates, no role switching.
Fixed price from week 2
After the Roadmap phase, you get a fixed price for the entire API. No hourly billing, no surprise invoices, no scope creep charges. If you add features, we quote the new scope separately.
You own everything
The source code, the repo, the cloud account, the domain, and the monitoring tools are all in your name. We work in your infrastructure from day one. You are never locked in.
Compliance built in, not bolted on
We have built APIs for HIPAA, PCI-DSS, SOC 2, and FERPA environments. Encryption, audit logging, access control, and data retention are part of every project scope, not an upsell.
Staging environment in week 4
You don't wait until the end to see the API. By week 4, you have a staging URL with live endpoints. Your frontend team can start integration testing immediately.
30-day post-release support
After launch, we stay on for 30 days to handle bugs, performance issues, and deployment tweaks. No handoff and disappear. We make sure your team is confident running the API.
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.