Professional API Development ServicesAPI Development
We build APIs that connect your systems, products, and users. Ships in 8-12 weeks with full documentation and test coverage.
IRPR builds production-ready APIs for web and mobile apps. We use Node.js (Express, NestJS), Python (FastAPI), Go, or Java (Spring Boot) based on your performance and ecosystem needs.
Every project ships in 8-12 weeks with fixed pricing from $80,000 to $250,000. APIs follow REST or GraphQL standards and include Swagger/OpenAPI documentation, Postman collections, and automated test suites.
We work with CTOs scaling their SaaS platform with microservices, product owners integrating third-party APIs like Stripe or Salesforce, and healthcare firms requiring HIPAA-compliant API gateways.
Types of software we ship.
RESTful API Development
Stateless APIs using HTTP verbs. Built with FastAPI or Express, includes pagination, rate limiting, and hypermedia links.
GraphQL API Development
Flexible query language for front-end driven apps. Uses Apollo Server or Yoga with custom resolvers and data loaders.
Microservices API Development
Decoupled services communicating via gRPC or message queues. Built on Docker, Kubernetes, and service mesh like Istio.
Third-party API Integration
Connect your app to Stripe, Salesforce, HubSpot, or any REST/SOAP endpoint. Includes retry logic, webhook handling, and mapping.
Real-time API (WebSocket)
Low-latency bi-directional communication using WebSockets or Server-Sent Events. Great for live dashboards and chat.
Payment API Integration
Tokenize cards, process subscriptions, handle refunds with Stripe, Braintree, or Adyen. PCI-DSS compliant by default.
Internal API Gateway
Single entry point for internal microservices with routing, authentication, and rate limiting. Often built on Kong or AWS API Gateway.
Public API (Developer Portal)
Expose your product to third-party developers with documentation, API keys, usage analytics, and versioning using Swagger.
We build for every business type.
Finance & Fintech
Healthcare
Ecommerce
SaaS & Enterprise
Logistics & Transportation
Why Professional API Development Matters
A poorly designed API costs you time, money, and customers.
IRPR has shipped over 200 APIs for companies across 50 countries. Each API must handle thousands of requests per second, enforce strict authentication, and return consistent responses.
We design every endpoint with error codes, rate limiting, and pagination from the start. Post-launch, we include monitoring with Datadog and Sentry to catch issues before users do.
How IRPR Compares to Other Dev Shops
Most agencies charge by the hour and deliver incomplete integrations.
A generic shop may write undocumented endpoints that break with every change. They often miss security basics like input validation or rate limiting.
IRPR delivers a complete API: source code, tests, documentation, deployment scripts, and monitoring. You get a fixed price and a guaranteed timeline.
- No API documentation
- Hourly billing with creeping costs
- No security audit or rate limiting
- Delayed delivery with no milestone tracking
- No API versioning strategy
- Hard to maintain after handoff
- OpenAPI/Swagger docs included
- Fixed price from $80K
- OAuth2 and JWT security built-in
- Ships in 8-12 weeks with sprint demos
- Semantic versioning and changelogs
- CI/CD and Datadog monitoring from day one
Our API Development Process
We deliver your API in four phases, each with a clear deliverable.
The Roadmap phase (week 2) produces a fixed price and a detailed spec. No guesswork, no scope creep.
The Product phase (weeks 3-10) builds endpoints, tests, and docs. The Release phase (weeks 11-12) deploys to your cloud with monitoring and alerting.
What Ships with Every API Project
You get more than just endpoints.
Every IRPR API project includes the assets your team needs to maintain and scale the service independently.
- Source code in your private GitHub repo
- OpenAPI 3.0 specification (Swagger)
- Postman collection with environment variables
- Unit test suite (Jest, pytest, or JUnit)
- Integration tests for critical paths
- CI/CD pipeline (GitHub Actions or GitLab CI)
- Docker image with Dockerfile and README
- API monitoring dashboard (Datadog)
- Error tracking setup (Sentry)
- Deployment runbook for your cloud provider
What we ship in this practice.
Payment Gateway API for Fintech
Reduced payment processing latency from 800ms to 120ms. Built with Node.js, Stripe API, and Redis caching. Handles 10,000 requests per minute.
Patient Records API for Telehealth
Secured PHI data with end-to-end encryption and HIPAA-compliant audit logs. Built on FastAPI with PostgreSQL and AWS KMS.
Inventory Sync API for Ecommerce
Synced inventory across 3 warehouses and 2 marketplaces in real time. Used Python, Celery, and Redis to handle 10,000 SKUs.
SaaS Billing API
Automated subscription management, invoicing, and dunning. Integrated with Stripe and Zuora using Go. Cut billing errors by 90%.
Real-time Tracking API for Logistics
Provided live shipment updates via WebSockets to a fleet of 500+ drivers. Built with Node.js, Socket.IO, and MongoDB.
User Management API for Multi-tenant App
Handled authentication, roles, and permissions for 50,000 users across 200 tenants. Used Auth0, PostgreSQL, and Redis.
Why teams hire us.
Fixed Price, Not Hourly
Every project gets a fixed quote in week 2 (Roadmap phase). No hourly billing, no surprise invoices, no scope creep charges.
Senior Engineers Only
Our team averages 8+ years of experience. You get a lead architect and two developers who have built production APIs for companies like Adobe and Uber.
API Documentation Included
Every API ships with an OpenAPI 3.0 spec and a Postman collection. Documentation is auto-generated and updated with every change.
Security Hardened by Default
We implement OAuth2, JWT, input validation, and rate limiting from day one. All APIs are reviewed for OWASP Top 10 vulnerabilities.
12-Week Guarantee
We deliver a production-ready API in 8-12 weeks. Over 98% of our projects ship on time because of our templated workflow.
Full Ownership of Code
You own 100% of the source code, documentation, and deployment artifacts. We transfer everything in your private repo on day one.
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.