Premium Custom API Development StudioAPI Development
Build APIs that drive your product. IRPR delivers production-grade APIs in 8-12 weeks with fixed pricing.
IRPR builds premium custom APIs for companies that need reliable, scalable backend services. We use Node.js, Go, Python, and GraphQL to create APIs that handle millions of requests. Every API ships with an OpenAPI 3.0 specification and automated testing.
We deliver a functional API in 8-12 weeks with a fixed price between $80K and $250K. All APIs include CI/CD pipelines, monitoring (Sentry, Datadog), and compliance documentation for HIPAA, PCI-DSS, or SOC 2.
Our clients are CTOs modernizing legacy systems, VPs of Engineering launching new platforms, Product Managers building API-first products, and startup founders monetizing data through APIs.
Types of software we ship.
RESTful API
Stateless resource-based APIs using Express or Fastify. Ideal for CRUD operations and third-party integrations.
GraphQL API
Flexible query language with Apollo Server. Perfect for complex data fetching and real-time updates.
gRPC API
High-performance protocol buffers for internal microservices. Used by fintech and IoT systems for low latency.
WebSocket API
Real-time bidirectional communication for chat, notifications, and live dashboards. Built with Socket.io or ws library.
Microservices API Gateway
Centralized gateway with Kong or Envoy to route, rate-limit, and authenticate multiple microservices.
Third-party API Integration
Custom connectors for Salesforce, Stripe, HubSpot, and 50+ other platforms. Handles auth, webhooks, and data sync.
Internal Backend API
Private APIs that power mobile apps, web apps, and internal tools. Secure with JWT, OAuth 2.0, and RBAC.
Public Developer API
External-facing APIs for partners and developers. Includes documentation, sandbox environment, and usage analytics.
We build for every business type.
Fintech
Healthcare
Ecommerce
SaaS
Logistics
Why invest in a premium custom API development studio
Your API is the backbone of your product. A poorly built API costs you speed, security, and developer trust.
IRPR has built 200+ APIs over 10 years. Our engineers write every API with automated tests, rate limiting, and detailed logging. We use OpenAPI 3.0 so your team can generate client SDKs instantly.
A premium custom API from IRPR ships with 99.9% uptime guarantees, security audits for OWASP Top 10 vulnerabilities, and compliance documentation for HIPAA, PCI-DSS, or SOC 2.
Premium vs generic: what you get with IRPR
Not all API development studios deliver the same quality. Here's how we compare.
Generic dev shops treat API development as a side task. They skip documentation, use boilerplate code, and deliver without monitoring. You end up with a fragile API that breaks under load.
IRPR treats every API as a product. We write OpenAPI specs first, implement comprehensive test suites, set up Datadog monitoring, and provide Postman collections. Your team gets a production-ready API from day one.
- No API contract before coding
- Minimal error handling
- No automated testing
- Unclear versioning strategy
- Missing rate limiting and throttling
- No monitoring or alerting
- OpenAPI 3.0 spec as contract
- Structured error responses with codes
- 85%+ line coverage tests
- Semantic versioning (semver)
- Configurable rate limiting with Redis
- Datadog dashboards and Sentry alerts
How we build your premium custom API: 4 phases
Our process ensures you get exactly what you need, on time and on budget.
Phase 1: Discovery (week 1-2). We map your data model, user flows, and integration points. You get an architecture diagram and a list of API endpoints with expected payloads.
Phase 2: Roadmap (week 2). We produce a fixed-price proposal with milestones, deliverables, and a timeline. No surprises.
What ships with every premium custom API
You don't just get an API. You get everything needed to run it in production.
Every IRPR API project delivers a complete package. Your team can take over immediately with full documentation and operational tooling. No hand-holding required.
- Source code in your private GitHub repo
- OpenAPI 3.0 specification (YAML)
- Postman collection with example requests
- CI/CD pipeline (GitHub Actions or GitLab CI)
- Automated test suite with 85%+ coverage
- Docker containers for local development
- Sentry error tracking integration
- Datadog monitoring dashboards
- Rate limiting configuration (Redis)
- API runbook with deployment and recovery steps
What we ship in this practice.
Payment Processing API for Fintech Startup
Built a PCI-DSS compliant REST API handling 10,000 transactions per minute. Integrated with Stripe and Plaid. Reduced chargeback disputes by 30% using custom validation logic. Tech stack: Go, PostgreSQL, Redis, Stripe API.
Real-Time Telemedicine API
Developed a WebSocket and REST hybrid API for a telemedicine platform. Supports video call scheduling, EHR data exchange, and prescription management. Handles 500 concurrent calls with <200ms latency. Tech stack: Node.js, Socket.io, FHIR, AWS.
Product Catalog API for Ecommerce Brand
Created a GraphQL API that powers a multi-vendor marketplace with 50,000 SKUs. Supports inventory sync with 3PL warehouses and real-time pricing updates. API response time under 50ms p95. Tech stack: Apollo Server, MongoDB, Elasticsearch.
Subscription Billing API for SaaS Platform
Engineered a RESTful billing API with metered usage, proration, and dunning management. Integrated with Stripe and Zuora. Reduced billing errors by 95% and cut churn by 15% with proactive alerts. Tech stack: Python, Django, Celery, PostgreSQL.
Route Optimization API for Logistics Company
Built a gRPC-based microservice that computes optimal delivery routes for 1,000+ drivers daily. Integrates with GPS trackers and real-time traffic data. Saved 20% on fuel costs per month. Tech stack: Go, gRPC, Redis, Google Maps API.
Content Delivery API for Media Platform
Developed a CDN-backed REST API serving 10 million video metadata requests per day. Supports dynamic transcoding and personalized recommendations. API availability at 99.99% over 12 months. Tech stack: Node.js, Fastify, CloudFront, DynamoDB.
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. You know the total cost before we write a line of code.
Senior engineers only
Every engineer on your project has 10+ years of experience. We don't outsource or use junior devs. Our team averages 15 years in backend development and API design.
OpenAPI-first design
We write the API contract before any code. The OpenAPI 3.0 spec becomes the source of truth for documentation, testing, and client generation. This eliminates misunderstandings.
Security by default
Every API includes OAuth 2.0, rate limiting, input validation, and encryption at rest. We run OWASP ZAP scans and provide a security audit report. HIPAA and PCI options available.
Async collaboration with US overlap
We work async-first across time zones but guarantee 4 hours of daily overlap with US business hours. You get daily Slack updates and a weekly demo video. No frustrating delays.
Post-launch support with SLAs
After launch we provide 30 days of warranty fixes and optional ongoing support with 4-hour response SLAs. Your API keeps running smoothly without a full-time team.
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.