Expert Custom API Development FirmDevelopment Firm
We build secure, scalable APIs for your product. Ship your MVP in 12 weeks with a fixed price.
IRPR is an expert custom API development firm that builds REST, GraphQL, and gRPC APIs using Node.js, Python, Go, and .NET. We design APIs that integrate with your existing systems and scale to millions of requests.
We ship production-ready APIs in 8-12 weeks with fixed pricing from $80K to $250K. Every API meets compliance standards like HIPAA, PCI-DSS, and SOC 2.
CTOs needing a scalable backend, product managers launching a SaaS MVP, and enterprise teams integrating third-party services hire us to build APIs that work from day one.
Types of software we ship.
REST API Development
Build stateless REST APIs with Node.js or Python. Includes OpenAPI spec, rate limiting, and authentication via JWT or OAuth2.
GraphQL API Development
Develop flexible GraphQL APIs with Apollo Server or Relay. Clients query exactly what they need, reducing over-fetching.
gRPC API Development
Create high-performance gRPC APIs using Protocol Buffers. Ideal for microservices communication with low latency.
WebSocket API Development
Build real-time WebSocket APIs for chat, live notifications, and collaborative tools. Uses Socket.io or native WebSockets.
API Gateway Development
Design API gateways with Kong or AWS API Gateway. Centralize routing, authentication, and rate limiting for multiple services.
Microservices API Architecture
Design and implement microservices APIs with Docker and Kubernetes. Each service has its own API contract and database.
Third-Party API Integration
Integrate with Stripe, Salesforce, HubSpot, Twilio, and other APIs. Includes error handling, retry logic, and webhooks.
Internal API (B2B) Development
Build private APIs for internal tools and partner integrations. Documented with Swagger and secured with API keys.
We build for every business type.
Healthcare
Fintech
Ecommerce
SaaS
Real Estate
Why choose an expert custom API development firm
IRPR has shipped over 200 APIs for clients in 50+ countries.
Our APIs handle millions of requests daily with 99.9% uptime. We use automated testing and CI/CD to catch issues before they reach production.
Every API includes monitoring with Datadog, error tracking with Sentry, and logging with ELK stack. Clients get full observability from day one.
Generic dev shop vs expert API firm
Not all developers build APIs the same way. Here is the difference.
Generic agencies reuse boilerplate code and skip documentation. Their APIs break under load and fail compliance audits.
IRPR designs every API from scratch with your data model, security requirements, and scaling needs in mind. We ship with OpenAPI docs, load testing reports, and compliance certificates.
- No API documentation
- No rate limiting
- No monitoring
- No CI/CD pipeline
- No security audit
- No load testing
- OpenAPI 3.0 spec included
- Rate limiting with Redis
- Datadog monitoring and alerts
- GitHub Actions CI/CD
- OWASP security review
- k6 load testing report
Our API development process
From idea to production in 4 phases.
We break API projects into four phases to eliminate guesswork. Each phase ends with a deliverable you can review.
By phase 4, your API is live with monitoring, documentation, and a load test report. You own the code and all credentials.
What ships with every API
Every custom API includes these deliverables by default.
You get full source code, documentation, and deployment scripts. No black boxes, no vendor lock-in.
IRPR also provides a 30-day warranty after launch. If something breaks, we fix it at no extra cost.
- Source code in your GitHub repo
- OpenAPI 3.0 specification
- Postman collection for testing
- CI/CD pipeline with GitHub Actions
- Docker container configuration
- Datadog monitoring dashboard
- Sentry error tracking
- k6 load test results
- Admin user guide
- 30-day post-launch support
What we ship in this practice.
Patient data API for telemedicine startup
Built a HIPAA-compliant REST API that syncs patient records between EHR systems and a mobile app. Reduced data entry time by 12 hours per week. Tech stack: Node.js, PostgreSQL, AWS Lambda.
Payment processing API for fintech platform
Developed a PCI-DSS compliant API that processes 10,000 transactions per day. Integrated with Stripe and Plaid for bank account verification. Tech stack: Python, FastAPI, Stripe API.
Product catalog API for ecommerce brand
Created a GraphQL API that serves product data to a React storefront. Cut page load time from 3 seconds to 400ms. Tech stack: Apollo Server, MongoDB, Redis.
Subscription billing API for SaaS company
Built a billing API that handles recurring payments, proration, and invoicing. Reduced manual billing errors by 95%. Tech stack: Node.js, Stripe Billing, PostgreSQL.
MLS property API for real estate platform
Integrated with 12 MLS feeds to provide real-time property listings. API handles 5 million requests per month with 99.9% uptime. Tech stack: Go, Elasticsearch, AWS.
Analytics API for media dashboard
Developed a streaming API that delivers real-time user engagement metrics. Reduced report generation time from 2 hours to 5 minutes. Tech stack: WebSocket, Kafka, ClickHouse.
Why teams hire us.
Fixed price, not hourly
Every API project gets a fixed quote after the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges.
Senior engineers only
IRPR assigns senior developers with 10+ years of experience. No junior devs, no outsourcing, no handoffs between teams.
Compliance built in
We build HIPAA, PCI-DSS, and SOC 2 compliant APIs from day one. Our security checklist covers encryption, access control, and audit logs.
Full code ownership
You own the source code, documentation, and all deployment credentials after the project. No licensing fees, no ongoing royalties.
12-week MVP guarantee
We ship a production-ready API in 12 weeks or less. If we miss the deadline, you pay nothing for the final sprint.
Post-launch support
Every API comes with 30 days of free support after launch. We fix bugs, answer questions, and help your team take over.
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.