Expert Custom API Development StudioAPI Development
We build production-grade APIs that power your product. Fixed price, senior engineers, 8-12 week delivery.
IRPR is an expert custom API development studio. We build RESTful, GraphQL, and gRPC APIs using Node.js, Python, Go, and PostgreSQL. Every API is secured with OAuth 2.0 and documented in OpenAPI 3.0.
We ship production APIs in 8-12 weeks with a fixed price from $80K to $250K. Our APIs meet compliance standards like HIPAA, PCI-DSS, and SOC 2. We have built over 200 APIs for clients in 50 countries.
Our clients are CTOs at Series A startups needing a scalable API for their SaaS product, engineering leads at healthcare companies requiring HIPAA-compliant integrations, and product managers at fintech firms building payment APIs.
Types of software we ship.
REST API Development
Build standard RESTful APIs with proper resource modeling, pagination, and rate limiting using Express.js or FastAPI.
GraphQL API Development
Create flexible GraphQL APIs with Apollo Server, resolving complex data graphs and supporting subscriptions.
Microservices API Development
Design decoupled microservices with gRPC or message queues like RabbitMQ for high scalability.
API Gateway Implementation
Deploy AWS API Gateway or Kong to centralize authentication, throttling, and logging for your APIs.
API Integration Services
Connect your API to third-party platforms like Stripe, Salesforce, or Twilio using pre-built adapters.
API Security Audit
Audit your API for OWASP top 10 vulnerabilities, implement OAuth 2.0, and enforce rate limiting.
API Documentation
Generate interactive API docs with Swagger/OpenAPI and Postman collections for developer onboarding.
API Testing Automation
Write automated integration tests with Postman or k6 to verify endpoints under load and edge cases.
We build for every business type.
Fintech
Healthcare
Ecommerce
SaaS
Logistics
Why choose an expert custom API development studio
Data-driven results from over 200 API projects.
IRPR has shipped more than 200 API integrations across industries. Our 98% on-time delivery rate comes from a repeatable process: Roadmap, Design, Build, Release. Every API is built by senior engineers with an average of 12 years of experience.
We work with startups that need an MVP in 8-12 weeks and enterprises that require HIPAA or PCI-DSS compliance. Our fixed pricing eliminates budget surprises. You know the cost after the 2-week Roadmap phase.
Generic agency vs an expert custom API development studio
See how IRPR differs from the rest.
Most dev shops treat APIs as an afterthought. They use junior developers, skip documentation, and bill hourly. That leads to broken integrations, security holes, and cost overruns. IRPR is the opposite.
We assign senior engineers who design your API architecture first. We document every endpoint in OpenAPI 3.0 and test with automated suites. Our fixed price model means no surprises. You own the full codebase.
- Hourly billing with unpredictable costs
- Junior developers with limited API experience
- No structured documentation or test suites
- No compliance certifications (HIPAA, SOC 2)
- Long timelines with no guaranteed delivery
- Vague code ownership clauses
- Fixed price locked after 2-week Roadmap
- Senior engineers only (12+ yrs avg experience)
- Auto-generated OpenAPI docs + Postman collections
- HIPAA, PCI-DSS, SOC 2 compliance built in
- 8-12 week delivery with 98% on-time rate
- Full code ownership transferred to you
Our API development process as an expert studio
From idea to production API in 12 weeks.
Every project begins with a 2-week Roadmap phase. We map endpoints, data models, and security requirements. You get a fixed quote before any development starts. No scope creep.
We build in sprints with continuous integration. Each sprint ends with a deployable artifact. You see progress at every demo. By week 12 we hand over a production-ready API with full documentation.
What ships with your custom API
Everything you need to go live.
When IRPR delivers your API, you get more than code. You get the entire operational stack: repositories, deployment pipelines, monitoring, and documentation. Nothing is left behind.
Every project includes a deployment runbook and a post-launch monitoring dashboard. Your team can take over immediately or we can continue with a support retainer.
- Source code in your Git repository (GitHub, GitLab, or Bitbucket)
- OpenAPI 3.0 documentation (Swagger UI hosted)
- CI/CD pipeline on GitHub Actions or GitLab CI
- Sentry error tracking integrated
- Docker containers for dev, staging, and production
- API load tests with k6 (baseline performance report)
- OAuth 2.0 authorization server (Auth0 or custom)
- Postman collection with environment variables
- Deployment runbook (one-page quick start guide)
- Post-launch monitoring dashboard (Datadog or CloudWatch)
What we ship in this practice.
Payment processing API for fintech startup
Built a RESTful payment API using Node.js, Express, and Stripe Connect. Handles 10,000+ transactions per day. Reduced integration time for merchant onboarding from 3 weeks to 2 days.
FHIR-compliant patient data API for a healthtech company
Developed a GraphQL API over FHIR R4 for a telehealth platform. Enabled real-time patient record access across 50 clinics. Achieved HIPAA compliance with full audit logging.
Real-time inventory API for an ecommerce brand
Created a WebSocket API for inventory updates using AWS API Gateway and DynamoDB. Cut inventory sync latency from 30 seconds to under 1 second. Supported 500,000 SKUs.
Order management API for a SaaS company
Built a microservices API with gRPC for order processing. Integrated with Stripe for billing and Slack for notifications. Reduced order processing errors by 40%.
Real-time tracking API for a logistics startup
Developed a GraphQL subscription API for live shipment tracking using PostgreSQL and Redis. Handles 1 million location updates per hour. Enabled customer-facing tracking page in 8 weeks.
Compliance reporting API for a real estate platform
Built a REST API to generate MLS compliance reports. Used Flask and PostgreSQL with role-based access. Reduced report generation time from 4 hours to 10 minutes.
Why teams hire us.
Fixed price from day one
Every project starts with a 2-week Roadmap phase that produces a fixed quote. No hourly billing, no surprise invoices. Over 200 projects have been delivered on budget.
Senior engineers only
Our team averages 12 years of experience. No junior developers touch your API. Every line of code is reviewed by a lead architect.
Compliance built in
We build APIs to HIPAA, PCI-DSS, SOC 2, and FERPA standards. Our compliance checklist is integrated into every sprint. Audits pass on first try.
Full code ownership
You own every file we write. Source code is stored in your repository from day one. No licensing fees, no hidden rights.
Documentation as a deliverable
We generate OpenAPI 3.0 specs and Postman collections automatically. Your developer experience team gets production-ready docs with every build.
Post-launch support included
After deployment we monitor your API for 30 days. We fix any critical issues within 4 hours. Optional retainer available for ongoing maintenance.
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.