Experienced API Development ServicesAPI Development
We build production-ready APIs in 8-12 weeks with fixed prices. Our senior engineers have shipped 200+ products across 50+ countries.
IRPR builds production-grade APIs using Node.js, Go, Rust, and Python with frameworks like Express, FastAPI, and Apollo GraphQL. Every API ships with OpenAPI documentation, automated tests, and rate limiting.
A typical API project takes 8-12 weeks from kickoff to deployment. Prices range from $80K to $250K depending on endpoints, integrations, and compliance needs (HIPAA, PCI-DSS, SOC 2). You get a fixed price after the Roadmap phase (week 2).
Common buyers include CTOs at SaaS startups needing a public API, engineering leads at fintech companies replacing legacy integrations, product managers at healthcare platforms requiring HIPAA-compliant FHIR APIs, and heads of platform at logistics firms building real-time tracking endpoints.
Types of software we ship.
RESTful API development
Standard REST APIs with JWT auth, pagination, and caching via Redis. Typically built with Express or FastAPI.
GraphQL API development
Flexible GraphQL APIs with Apollo Server, data loaders for N+1 prevention, and Subscriptions for real-time data.
WebSocket API development
Persistent connection APIs for chat, live feeds, or streaming data. Built with Socket.io or Go gorilla/websocket.
API gateway implementation
Unified gateway using Kong or AWS API Gateway with authentication, rate limiting, and request transformation.
Third-party API integration
Connect your app to Stripe, Salesforce, HubSpot, Twilio, or any external API with logging and retry logic.
Microservices API development
Event-driven microservices with message queues (RabbitMQ, Kafka) and service discovery. Each service has its own API contract.
Internal API development
Private APIs for inter-service communication with gRPC or Thrift. Includes end-to-end encryption and access control.
API documentation & testing
Interactive docs with Swagger/OpenAPI 3.0, automated Postman collections, and contract testing with Pact.
We build for every business type.
SaaS companies
fintech firms
healthcare organizations
ecommerce and retail
logistics and supply chain
Why experienced API development matters
An API is the backbone of modern software. Bad design leads to slow integrations, security holes, and costly rewrites.
IRPR has built APIs for 200+ products across 50 countries. We start with an API blueprint in week 2 during the Roadmap phase. This blueprint defines endpoints, data models, authentication, and error handling before we write a single line of code. The fixed price is based on that blueprint.
We use a monorepo with shared types and automated CI/CD. Every API gets rate limiting (token bucket), input validation (Zod or Pydantic), and structured logging (Sentry). Uptime is monitored via Datadog with 99.9% SLA.
Generic dev shop vs. IRPR
Not all API development is equal. See how a generic shop compares to an experienced team.
Many agencies promise API services but deliver poorly documented, unsecured endpoints. They reuse boilerplate without understanding your data model, leading to technical debt and months of rework.
IRPR builds APIs that scale from day one. We enforce strict versioning, idempotency, and backward compatibility. Our fixes come with 12-month maintenance included.
- No formal API design phase before coding
- REST only, forced for real-time needs
- Inconsistent error responses
- No rate limiting or throttling
- No automated contract testing
- Code ownership unclear
- API blueprint approved in week 2
- Choose REST, GraphQL, WebSocket, or gRPC
- Unified error format with codes
- Rate limiting per user and endpoint
- Contract tests with Pact in CI/CD
- Full code ownership, no licensing
Our API development process
We follow a four-phase framework: Idea, Roadmap, Product, Release. Each phase has clear deliverables and a fixed price.
During the Roadmap phase (week 2), we produce a detailed API specification with endpoint schema, authentication strategy (JWT, OAuth 2.0), and data flow diagrams. You get a fixed price and timeline before we start building.
The Product phase runs 6-10 weeks of iterative development with weekly demos. We deploy to staging on day one and push to production only after load testing (k6) and security scanning (OWASP).
What ships with every API
Every API project includes these deliverables by default. No hidden add-ons.
You get a fully documented, production-ready API with automated tests and monitoring. We deploy to your cloud (AWS, GCP, or Azure) and set up CI/CD within your GitHub organization.
- Source code in your GitHub repo with full history
- OpenAPI 3.0 specification with interactive Swagger UI
- CI/CD pipeline (GitHub Actions) with lint, test, deploy
- Unit and integration tests with 80%+ coverage
- Rate limiting and input validation (Zod, Pydantic)
- Structured logging with Sentry error tracking
- Docker Compose for local development
- Postman collection for manual testing
- Deployment guide with Terraform scripts
- 12-month maintenance with uptime SLA
What we ship in this practice.
Public API for a SaaS platform
Built a RESTful API for a B2B analytics platform. Integrated with Stripe for billing and SendGrid for email. Reduced manual data export by 10 hours per customer per week. Stack: Node.js, Express, PostgreSQL, Redis, Stripe API.
Real-time inventory API for ecommerce
Developed a WebSocket-based inventory sync API for a multi-warehouse retailer. Connected with Shopify and NetSuite. Achieved sub-100ms updates across 500+ stores. Stack: Go, websocket/gorilla, Kafka, MongoDB.
HIPAA-compliant FHIR API for telehealth
Created a FHIR R4 API for electronic health record exchange. Passed HIPAA audit with BAA in place. Enabled real-time patient data sharing between clinics. Stack: Python, FastAPI, FHIR, AWS HealthLake, Okta.
Payment gateway API for fintech
Built a PCI-DSS compliant payment processing API with tokenization and idempotency. Handled 10,000 transactions per minute with no failures. Stack: Java, Spring Boot, PostgreSQL, Hashicorp Vault, Stripe Connect.
GraphQL API for a real estate marketplace
Designed a unified GraphQL API aggregating MLS listings, mortgage rates, and school data. Reduced client-side calls by 60% and page load times by 40%. Stack: Node.js, Apollo Server, PostgreSQL, Elasticsearch.
Internal gRPC API for logistics platform
Built a microservices architecture with 12 gRPC services for route optimization, driver dispatch, and real-time tracking. Achieved 99.99% uptime during peak holiday season. Stack: Go, gRPC, Protobuf, NATS, Redis.
Why teams hire us.
Fixed price from the start
We quote a fixed price after the Roadmap phase (week 2). No hourly billing, no surprise invoices. The price covers the full API build including documentation and deployment.
Senior engineers only
Our team averages 10+ years of experience. Every developer has shipped production APIs to millions of users. We don't outsource or use junior contractors.
Full code ownership
You own 100% of the code and intellectual property. No licenses, no royalties. We commit directly to your repository and hand over all source code.
Compliance built in
We build APIs that meet HIPAA, PCI-DSS, SOC 2, and GDPR requirements. Our processes include data encryption at rest and in transit, audit logging, and access controls.
12-month maintenance included
Every project comes with 12 months of maintenance. We monitor uptime (99.9% SLA), fix bugs within 24 hours, and provide security patches. No retainer fees.
200+ products, 50+ countries
We've shipped over 200 API-driven products across industries including fintech, healthcare, and logistics. Our experience spans REST, GraphQL, gRPC, and WebSocket protocols.
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.
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