Experienced REST API Development ServicesREST API
We build production-grade REST APIs that handle millions of requests daily. Ship your MVP in 8-12 weeks with fixed pricing.
IRPR designs and builds REST APIs for web and mobile apps using Node.js, Python, and Go. We handle authentication, rate limiting, and database optimization out of the box.
You get a fully documented API with OpenAPI specs, CI/CD pipelines, and load testing results. Typical delivery is 8-12 weeks with pricing from $80K to $250K depending on complexity. APIs are built to HIPAA, PCI DSS, or SOC 2 standards as needed.
We work with SaaS founders launching a new product, CTOs migrating from monoliths to microservices, fintech companies needing PCI-compliant payment APIs, and healthcare platforms requiring HIPAA-compliant data exchange.
Types of software we ship.
Payment Gateway API
Process transactions with Stripe, Braintree, or custom gateways. Handles 1,000+ TPS with PCI DSS compliance.
User Authentication API
OAuth2, JWT, and social login integration. Supports 100k+ users with role-based access control.
Data Sync API
Real-time sync between Salesforce, HubSpot, and custom databases using webhooks and change data capture.
Search API
Elasticsearch-based full-text search with faceted filters. Returns results in under 50ms at scale.
Notification API
Multi-channel notifications via Twilio, SendGrid, and Firebase. Delivers 10k messages per minute.
Analytics API
Aggregate event data with ClickHouse or Redshift. Supports 10M events/day with sub-second queries.
Inventory Management API
Real-time stock sync across warehouses using Redis and PostgreSQL. Eliminates overselling with atomic updates.
Content Management API
Headless CMS endpoints for blogs, product pages, and media assets. Built on Strapi or custom Node.js.
We build for every business type.
SaaS
Fintech
Healthcare
Ecommerce
Enterprise
Why experienced REST API development matters
A poorly designed API costs you time, money, and customers.
We follow RESTful best practices: proper HTTP methods, consistent error responses, versioning from day one. Every endpoint includes pagination, filtering, and rate limiting.
Our APIs average 99.9% uptime and handle 10,000+ requests per second. We use load testing tools like k6 and Artillery to validate performance before launch.
Generic dev shop vs IRPR
Not all API development teams deliver the same quality.
Many agencies skip documentation, ignore security, or deliver brittle endpoints that break with every change.
IRPR builds APIs that are documented, tested, and ready for scale from day one.
- No OpenAPI specs
- No rate limiting
- No CI/CD pipeline
- No load testing
- No security audits
- No post-launch support
- OpenAPI 3.0 specs included
- Rate limiting and authentication built-in
- CI/CD pipeline on GitHub Actions
- Load tested with k6 before launch
- Security reviewed for OWASP top 10
- 12-week support window after launch
Our REST API development process
We follow a four-phase process that delivers predictable results.
Each phase has clear deliverables and a fixed price.
You know what you get and when you get it.
What ships with your REST API
Every project includes these deliverables by default.
No hidden fees or missing pieces.
- Source code in your private GitHub repo
- OpenAPI 3.0 specification
- CI/CD pipeline with GitHub Actions
- Postman collection for testing
- Load test report from k6
- Security audit report (OWASP top 10)
- Deployment scripts for AWS, GCP, or Azure
- Sentry error tracking configured
- Datadog monitoring dashboard
- 12-week support SLA
What we ship in this practice.
Payment gateway API for fintech startup
Built a PCI-compliant payment API using Node.js, Stripe, and PostgreSQL. The client processed $5M in transactions in the first quarter with zero security incidents.
Patient data exchange API for telehealth
Developed a HIPAA-compliant REST API for EHR integration using Python and FastAPI. Reduced data retrieval time from 3 minutes to 12 seconds.
Inventory sync API for ecommerce marketplace
Created a real-time inventory API with WebSocket fallback using Go and Redis. Eliminated overselling by syncing stock across 50+ warehouses.
User management API for SaaS platform
Implemented OAuth2-based authentication API with role-based access control using Node.js and MongoDB. Supported 100,000 users within 6 months.
Analytics API for ad tech company
Built a high-throughput analytics API using Go and ClickHouse. Handled 10 million events per day with sub-100ms response times.
CRM integration API for real estate
Developed a REST API to sync MLS data with custom CRM using Ruby on Rails and PostgreSQL. Reduced manual data entry by 20 hours per week.
Why teams hire us.
Fixed price, not hourly
Every project gets a fixed quote after 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. Every API is built by a senior engineer, not an intern or junior developer.
OpenAPI specs included
Every endpoint is documented with OpenAPI 3.0. Your team can start integrating immediately without reverse-engineering the API.
Security first
We run OWASP top 10 scans and penetration tests on every API. Compliance with HIPAA, PCI DSS, and SOC 2 is standard.
Performance tested
We load test every API to 10x expected traffic using k6. You get a performance report before launch showing response times and throughput.
12-week support included
After launch, we provide 12 weeks of support for bug fixes and minor changes. No extra charge, no retainer required.
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.