Senior API Development DevelopersAPI Development
Hire senior API development developers who ship production-grade APIs in 8-12 weeks. Fixed pricing, no hourly billing, full code ownership.
IRPR builds custom APIs for web apps, mobile backends, and third-party integrations. Our senior API development developers use Node.js, Python, Go, and Java with frameworks like Express, FastAPI, and Spring Boot.
Every project ships in 8-12 weeks with a fixed price between $80K and $250K. We handle compliance for HIPAA, PCI-DSS, and SOC 2. You get source code, CI/CD pipelines, and API documentation in your repo.
CTOs hire us to replace slow offshore teams. Product owners hire us to build API-first platforms. Startup founders hire us to launch MVPs with scalable backends. Enterprise architects hire us to modernize legacy integrations.
Types of software we ship.
REST API development
Build stateless RESTful APIs with OpenAPI specs, JWT auth, and rate limiting. Integrates with Stripe, Twilio, and AWS.
GraphQL API development
Design GraphQL schemas with Apollo Server or Hasura. Supports real-time subscriptions and federated gateways.
gRPC API development
High-performance gRPC APIs using Protocol Buffers. Ideal for microservices and internal service-to-service communication.
Third-party API integration
Connect your app to Salesforce, HubSpot, Shopify, or custom SOAP/REST endpoints. Includes error handling and retry logic.
API gateway development
Deploy API gateways with Kong, AWS API Gateway, or NGINX. Handles auth, throttling, logging, and versioning.
Webhook system development
Build reliable webhook delivery systems with retries, idempotency keys, and event logging. Uses Redis and RabbitMQ.
Real-time API development
Create WebSocket and SSE-based APIs for live dashboards, chat, and notifications. Powered by Socket.io or AWS AppSync.
API documentation and testing
Auto-generate Swagger/OpenAPI docs, Postman collections, and integration tests. Includes load testing with k6.
We build for every business type.
Healthcare
Fintech
Ecommerce
SaaS
Logistics and Travel
Why senior API development developers matter
A poorly designed API costs you time, money, and customer trust.
Junior developers often skip error handling, rate limiting, and proper documentation. That leads to broken integrations and security holes. Our senior API development developers write production-grade code from day one. Every endpoint includes input validation, authentication, and structured error responses.
We use tools like Sentry for error tracking, Datadog for monitoring, and Postman for automated testing. Our APIs handle 10,000+ requests per second with 99.9% uptime. You get a scalable backend that grows with your user base.
Generic dev shop vs senior API development developers
Not all API developers are equal. Here is the difference.
Generic dev shops assign junior developers who learn on your dime. They write monolithic code with no tests, no documentation, and no monitoring. You end up with a fragile API that breaks every time you scale.
IRPR assigns senior API development developers with 10+ years of experience. We write modular, testable code with CI/CD pipelines, API documentation, and monitoring dashboards. Your API ships on time and on budget.
- Junior developers with 2-3 years experience
- No API documentation or specs
- No automated tests or CI/CD
- Hourly billing with scope creep
- No monitoring or error tracking
- Code ownership unclear
- Senior developers with 10+ years experience
- OpenAPI specs and Postman collections
- Automated tests and CI/CD pipelines
- Fixed price, no surprises
- Sentry and Datadog monitoring
- Full code ownership
How we build your API in 4 phases
Our process is designed for speed and quality.
We start with a 2-week Roadmap phase where we define endpoints, data models, and auth flows. You get a fixed price and timeline before any code is written. No surprises.
Then we build, test, and deploy in 6-10 weeks. Every sprint ends with a working API you can test. We handle load testing, security audits, and documentation before launch.
What ships with your API
Every project includes these deliverables by default.
You get more than just code. We ship everything you need to run, maintain, and scale your API. No hidden extras.
Our senior API development developers set up monitoring, error tracking, and logging from day one. You can sleep knowing your API is stable.
- Source code in your private GitHub repo
- CI/CD pipeline with GitHub Actions
- OpenAPI 3.0 specification
- Postman collection with example requests
- Sentry error tracking
- Datadog monitoring dashboard
- Load test results with k6
- Security audit report
- Deployment scripts for AWS/GCP/Azure
- 1 month of post-launch support
What we ship in this practice.
Telemedicine API for a healthcare startup
Built a HIPAA-compliant REST API for video consultations, patient records, and prescription management. Reduced patient onboarding time by 60%. Tech stack: Node.js, Express, PostgreSQL, Twilio Video.
Payment gateway API for a fintech company
Developed a PCI-DSS compliant API handling 50,000 transactions per day. Integrated with Stripe, Plaid, and multiple banks. Reduced fraud by 40%. Tech stack: Python, FastAPI, Redis, AWS Lambda.
Product catalog API for an ecommerce brand
Created a GraphQL API serving 1 million product SKUs with real-time inventory sync. Cut page load time by 70%. Tech stack: Apollo Server, MongoDB, Elasticsearch, Shopify.
Multi-tenant API for a SaaS platform
Built a SOC 2 compliant API with tenant isolation, rate limiting, and usage analytics. Supported 500+ customers from day one. Tech stack: Go, PostgreSQL, Kong Gateway, Datadog.
Real-time tracking API for a logistics company
Developed a WebSocket API for live GPS tracking of 10,000+ shipments. Reduced customer support calls by 30%. Tech stack: Node.js, Socket.io, Redis, Google Maps API.
Booking API for a travel platform
Created a REST API for hotel and flight bookings with availability checks and payment processing. Handled 100,000 bookings per month. Tech stack: Java, Spring Boot, MySQL, Stripe.
Why teams hire us.
Fixed price, not hourly
Every project gets a fixed quote in the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges. You know the cost before we write a line of code.
Senior developers only
We hire senior API development developers with 10+ years of experience. No juniors, no offshore teams. Every developer has shipped at least 5 production APIs.
Full code ownership
You own all source code, documentation, and deployment scripts. No licensing fees, no vendor lock-in. You can take the code and run it anywhere.
Compliance built in
We build HIPAA, PCI-DSS, and SOC 2 compliant APIs by default. Our senior API development developers know how to handle PHI, PII, and payment data securely.
8-12 week delivery
Most APIs ship in 8-12 weeks. We use proven patterns, reusable modules, and automated testing to move fast without breaking things.
Post-launch support
Every project includes 1 month of post-launch support. We monitor your API, fix bugs, and help with scaling. You are never left alone after launch.
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.