Leading API Development AgencyAPI Development
We build production-grade APIs that ship in 8-12 weeks. No fluff, fixed pricing, full code ownership.
IRPR is a leading API development agency. We design and build custom APIs using Node.js, Python, Go, Postgres, Kafka, and GraphQL. Every API is architected for scale, security, and maintainability from day one.
We deliver a working API in 8-12 weeks with a fixed price (typically $80K-$250K). Your team gets full source code, automated CI/CD pipelines, Sentry error tracking, and compliance documentation for HIPAA, PCI-DSS, or SOC 2 if needed.
Hire us if you are a CTO needing a scalable integration layer, a product manager launching a SaaS that requires third-party API connectivity, a fintech startup building a payment gateway, or a health tech company exposing protected health data via APIs.
Types of software we ship.
REST API
Stateless HTTP APIs using OpenAPI 3.0 spec. Integrates with Swagger UI, Postman collections, and OAuth 2.0 auth.
GraphQL API
Flexible query language API with Apollo Server and Prisma. Single endpoint, typed schema, real-time subscriptions.
WebSocket API
Bidirectional real-time API for chat, live dashboards, and event streaming. Uses Socket.IO or AWS API Gateway WebSocket.
gRPC API
High-performance binary API using Protocol Buffers. Ideal for microservices and internal service-to-service communication.
Third-party API Integration
Connect your app to Stripe, Salesforce, HubSpot, Twilio, or any external service. Includes rate limiting, retry logic, and data mapping.
API Gateway & Management
Centralized gateway with Kong or AWS API Gateway. Handles rate limiting, auth, logging, and versioning for multiple APIs.
Internal API Platform
Private APIs for microservice communication. Uses message queues (RabbitMQ, Kafka) and service mesh (Istio).
Public API Product
Developer-facing APIs with documentation, API keys, usage analytics, and developer portal. Built with Stoplight or ReadMe.
We build for every business type.
Financial services
Healthcare
Ecommerce
SaaS platforms
Logistics & travel
Why choose a leading API development agency
IRPR delivers APIs that meet compliance standards, scale to millions of requests, and ship on a predictable timeline.
We have built over 200 API products across 50 countries. Our senior engineers average 10+ years of experience. Every project starts with a two-week Roadmap phase where we define the API spec, data model, and architecture.
Your team owns 100% of the code. We deploy using GitHub Actions, set up Sentry error monitoring, and provide Postman collections. Maintenance handoff includes runbooks and architecture diagrams.
How IRPR stands out from other agencies
Most API agencies bill hourly and deliver late. We do the opposite.
Generic shops often start coding without a clear spec. They change scope mid-project and charge extra for each revision. The result is an API that is poorly documented, has no automated tests, and fails under load.
IRPR uses a fixed-price model with a five-phase process: Idea, Roadmap, Product, Release, Support. We write integration tests, load test with k6, and provide OpenAPI specs before writing a single endpoint.
- Hourly billing, no price cap
- No API spec before coding
- Manual deployment scripts
- No load testing
- No compliance documentation
- Code ownership unclear
- Fixed price per project
- OpenAPI spec in week 2
- CI/CD via GitHub Actions
- k6 load testing included
- HIPAA/PCI/SOC 2 docs ready
- Full source code ownership
Our API development process
We build APIs in five phases, from concept to production.
Phase 1: Idea - We map your business requirements to API endpoints and data flows. This takes 1-2 days of workshops. Phase 2: Roadmap - We write the OpenAPI specification, choose the tech stack, and give you a fixed quote. This takes 2 weeks.
Phase 3: Product - We build the API in sprints. Each sprint delivers working endpoints with tests. Phase 4: Release - We deploy to your cloud (AWS, GCP, Azure) and run load tests. Phase 5: Support - Two weeks of post-launch support with monitoring and bug fixes.
What ships with your custom API
Every project includes a full delivery package, not just code.
You get everything needed to run, maintain, and evolve your API. We write documentation so your team can start integrating immediately.
We also include a one-week handoff session where we walk your engineers through the codebase and deployment process.
- Source code in your private GitHub repo
- OpenAPI 3.0 specification
- Postman collection for all endpoints
- CI/CD pipeline (GitHub Actions)
- k6 load test scripts
- Sentry error and performance monitoring
- Docker container image and docker-compose
- Deployment runbook for AWS/GCP/Azure
- Architecture diagram (Draw.io)
- Two weeks of post-launch support
What we ship in this practice.
Healthcare data sharing API
Built a FHIR-compliant API for a telemedicine network. Reduced data integration time from 3 weeks to 2 days. Tech stack: Node.js, PostgreSQL, HL7 FHIR, AWS API Gateway.
Fintech payment gateway API
Developed a PCI-DSS Level 1 compliant payment processing API. Handles $50M in monthly transactions with 99.99% uptime. Tech stack: Go, Kafka, Stripe Connect, AWS ECS.
SaaS multi-tenant API
Created a multi-tenant API for a B2B SaaS platform. Supports 500+ tenants with per-tenant rate limiting and data isolation. Tech stack: GraphQL, Prisma, Apollo Server, Redis.
Ecommerce inventory sync API
Built a real-time inventory sync API between Shopify, Amazon, and a warehouse management system. Cut manual reconciliation by 12 hours/week. Tech stack: Python, FastAPI, Celery, RabbitMQ.
Logistics tracking API
Developed a WebSocket-based real-time tracking API for a last-mile delivery company. Reduced driver check-in calls by 80%. Tech stack: Node.js, WebSocket, MongoDB, AWS AppSync.
Real estate MLS API
Built a query API that aggregates listings from 12 MLS providers. Delivers search results in under 200ms. Tech stack: Go, Elasticsearch, Postgres, Redis cache.
Why teams hire us.
Fixed price per API project
We quote a fixed price in the Roadmap phase. No hourly billing, no surprise costs. If scope changes, we update the price transparently before work begins.
Senior engineers only
Every engineer on your project has 10+ years of experience. No junior devs learning on your API.
Compliance built-in
We build HIPAA, PCI-DSS, SOC 2, and FERPA compliant APIs. Our documentation matches the requirements of each standard.
Full code ownership
You own 100% of the source code. No license fees, no lock-in. Run your API anywhere you want.
API-first documentation
We write OpenAPI 3.0 specs and Postman collections before coding starts. Your frontend teams can begin integration early.
99.9% uptime SLA
We deploy on AWS, GCP, or Azure with auto-scaling and multi-region failover. Our monitoring catches issues before users notice.
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.