Expert REST API Development ConsultantsConsultants
We build REST APIs that handle millions of requests per day. Fixed pricing, senior engineers, 12-week delivery.
IRPR builds custom REST APIs for web and mobile apps. We use Go, Node.js, Python, or Rust depending on your performance needs.
Each project ships with OpenAPI documentation, automated tests, and a CI/CD pipeline. Typical timeline is 8 to 12 weeks with fixed pricing from $80,000 to $250,000 depending on complexity. We handle compliance for HIPAA, PCI-DSS, and SOC 2.
Startup CTOs hire us to build their SaaS product's API from scratch. Enterprise engineering VPs hire us to redesign legacy APIs into microservices. Product managers hire us to integrate third-party APIs like Stripe, Salesforce, or HubSpot. Data teams hire us to build data ingestion APIs.
Types of software we ship.
REST API for SaaS applications
Build user authentication, billing, and data CRUD endpoints. Common tools: FastAPI, PostgreSQL, JWT.
Microservices API gateway
Central gateway for routing, rate limiting, and auth for multiple services. Uses Kong or Envoy.
Payment API integration
Stripe, Square, or custom payment processor APIs with idempotency keys and webhook handling.
REST API for mobile apps
Optimized endpoints for low-bandwidth mobile clients with pagination and caching. Uses JSON:API standard.
Data API for analytics
Aggregation endpoints for dashboards using Elasticsearch or ClickHouse.
Third-party API integration
Middleware to connect multiple external APIs (e.g., Salesforce, HubSpot, QuickBooks) into one consistent interface.
REST API for IoT devices
Lightweight endpoints for device telemetry and command queuing using MQTT bridge and Node.js.
Internal API for enterprise
Private REST APIs for internal services with role-based access control using OAuth2.
We build for every business type.
Why expert REST API consultants matter
A badly designed API costs 10x more to maintain than a well-architected one.
IRPR's senior engineers have shipped 200+ APIs across 50 countries. Our APIs average 99.9% uptime and handle up to 10,000 requests per second.
We use automated load testing with k6 and performance monitoring with Datadog. Every API includes rate limiting, caching, and idempotency by default.
Generic dev shop vs IRPR API consultants
Not all API development teams follow best practices.
Many shops skip API documentation, write untestable code, and ignore security. Their APIs often break under load.
IRPR builds production-grade APIs with OpenAPI specs, unit tests, and CI/CD pipelines. We enforce code reviews and use static analysis tools like SonarQube.
- No documentation
- No automated tests
- No rate limiting
- No monitoring
- No security audits
- No CI/CD
- OpenAPI 3.0 spec by default
- 100% code coverage with pytest/Jest
- Rate limiting with Redis and token bucket
- Datadog APM and Sentry error tracking
- OWASP top 10 checks and pentesting
- GitHub Actions CI/CD with staging environments
Our REST API development process
From idea to production API in 8 weeks.
We start with a 2-week Roadmap phase. You get a detailed spec, wireframes, and a fixed price quote.
Then we build and deploy in 6-week sprints. You see working endpoints at the end of each sprint.
Ships by default
Every API project includes these deliverables
No surprises. Everything here is included in the fixed price.
- Source code in your private GitHub or GitLab repository
- OpenAPI 3.0 documentation (Swagger UI)
- Automated test suite with 90%+ coverage
- CI/CD pipeline using GitHub Actions or GitLab CI
- Docker containers for local development
- PostgreSQL or MongoDB schema migrations
- Rate limiting and authentication middleware
- Error tracking via Sentry
- Monitoring dashboard with Datadog or CloudWatch
- 1 week of post-launch support and bug fixes
What we ship in this practice.
Fintech payment API
Built a REST API for a payments startup that processes $5M/month. Used Go, PostgreSQL, and Stripe Connect. Reduced transaction failures by 40%.
Healthcare provider API
Designed a HIPAA-compliant API for a telemedicine app. Used Node.js, Express, and HL7 FHIR standard. Enabled 50,000 patient records to sync daily.
Ecommerce recommendation API
Created a REST API for a fashion retailer's personalized recommendations. Used Python, FastAPI, and Redis cache. Increased average order value by 15%.
SaaS subscription API
Developed a REST API for a SaaS company's billing system. Used Ruby on Rails, Stripe Billing, and PostgreSQL. Cut billing errors by 90%.
IoT device management API
Built a REST API for a smart building system handling 10,000 IoT sensors. Used Node.js, MQTT bridge, and InfluxDB. Reduced data latency from 10 seconds to 200ms.
Real-time analytics API
Designed a REST API for a media company's real-time dashboard. Used Go, Kafka, and Elasticsearch. Enabled live viewer counts with less than 1 second delay.
Why teams hire us.
Fixed price, not hourly
Every project gets a fixed quote after the 2-week Roadmap. No surprises, no hidden costs.
Senior engineers only
Every developer on your project has 10+ years of experience. No junior devs, no offshore outsourcing.
8-12 week delivery
We deliver a production-ready API in 8 to 12 weeks. That's from spec to deployment.
Production-grade by default
Your API ships with OpenAPI docs, automated tests, CI/CD, and monitoring. No extra charges for quality.
Post-launch support
We include 1 week of post-launch support and bug fixes. Plus optional ongoing maintenance at $5,000/month.
Compliance ready
We build HIPAA, PCI-DSS, and SOC 2 compliant APIs. Our team has certified compliance engineers (CISSP, CISA).
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.