Leading Custom API Development CompanyAPI Development
Build APIs that scale. We ship secure, production-ready APIs in 8-12 weeks with a fixed price.
IRPR is a leading custom API development company. We design and build REST, GraphQL, and gRPC APIs using Node.js, Python, Go, and PostgreSQL. Every API ships with automated testing, CI/CD pipelines, and monitoring in Sentry.
We deliver production-ready APIs in 8-12 weeks. Fixed pricing starts at $80K and goes up to $250K. Our APIs meet HIPAA, PCI-DSS, and SOC 2 compliance standards. We have shipped over 200 products to clients in 50+ countries.
CTOs hire us to replace slow legacy integrations. Product owners hire us to build API-first platforms. Startup founders hire us to launch their SaaS MVP with a scalable backend. Engineering leads hire us to design APIs that handle 10,000+ requests per second.
Types of software we ship.
REST API Development
Build RESTful APIs with Express.js or FastAPI. Includes OpenAPI 3.0 specs and Swagger UI documentation.
GraphQL API Development
Design GraphQL APIs with Apollo Server or Hasura. Supports real-time subscriptions and schema stitching.
gRPC API Development
Build high-performance gRPC APIs with Protobuf. Ideal for microservices and internal service-to-service calls.
Third-Party API Integration
Integrate with Stripe, Salesforce, HubSpot, Twilio, and 50+ other APIs. Handles rate limiting, retries, and webhooks.
API Gateway Development
Deploy API gateways using Kong or AWS API Gateway. Adds authentication, rate limiting, and request throttling.
Event-Driven API Development
Build event-driven APIs with Apache Kafka or RabbitMQ. Supports async processing and event sourcing patterns.
Internal API Development
Create internal APIs for microservices communication. Uses gRPC or REST with service discovery and circuit breakers.
API Documentation & Testing
Generate interactive API docs with Swagger or Postman. Includes automated integration tests and load testing with k6.
We build for every business type.
Healthcare
Fintech
Ecommerce
SaaS
Real Estate
Why Choose a Leading Custom API Development Company
IRPR has shipped 200+ APIs across healthcare, fintech, and ecommerce.
We build APIs that handle 10,000 requests per second with 99.9% uptime. Our APIs use PostgreSQL, Redis, and Kafka for data storage and streaming. Every API includes automated tests with Jest or Pytest and runs in a CI/CD pipeline on GitHub Actions.
Our fixed price model means you know the cost upfront. We start with a 2-week Roadmap phase where we define endpoints, data models, and authentication. Then we build the API in 8-12 weeks. You own the code from day one.
The Difference Between Us and Generic Dev Shops
Most agencies bill hourly and deliver late. IRPR delivers on time, on budget, with full documentation.
Generic dev shops often start coding without a clear spec. They bill hourly, so scope creep costs you money. They skip automated testing and documentation. You end up with an API that breaks in production and no one can maintain.
IRPR starts with a Roadmap phase that defines every endpoint, data model, and integration. We give you a fixed price and a timeline. We write automated tests and generate OpenAPI docs. You get a production-ready API with CI/CD, monitoring, and a deployment guide.
- Hourly billing with no cap
- No written specification
- No automated tests
- No documentation
- No CI/CD pipeline
- Delivers late and over budget
- Fixed price from the start
- Detailed Roadmap with endpoint specs
- Automated tests with 90%+ coverage
- OpenAPI 3.0 documentation
- CI/CD pipeline on GitHub Actions
- On-time delivery in 8-12 weeks
How We Build Your Custom API in 4 Phases
Our process ensures clarity, speed, and quality from day one.
We break every API project into four phases. Each phase ends with a deliverable you can review and approve. This keeps the project on track and ensures you get exactly what you need.
The Roadmap phase costs a fixed fee and takes 2 weeks. The Build phase takes 6-10 weeks depending on complexity. We deploy to staging in week 8 and run load tests. The Release phase includes production deployment and a 30-day warranty.
What Ships with Every Custom API
You get more than just code. Every API comes with a full delivery package.
When we deliver your API, you get everything needed to run it in production. No missing pieces. No surprises. Every deliverable is documented and tested.
We hand over source code in your private GitHub repo. We provide a deployment guide for AWS, GCP, or Azure. We include a Postman collection for testing. You own everything from day one.
- Source code in your private GitHub repo
- CI/CD pipeline on GitHub Actions
- Automated test suite with 90%+ coverage
- OpenAPI 3.0 documentation (Swagger UI)
- Postman collection for manual testing
- Deployment guide for AWS, GCP, or Azure
- Sentry error tracking and monitoring
- Database schema and migration scripts
- Rate limiting and authentication (JWT or OAuth2)
- 30-day warranty with bug fixes
What we ship in this practice.
Healthcare EHR Integration API
Built a HIPAA-compliant API that connects a telehealth platform to Epic EHR. Reduced manual data entry by 12 hours per week. Tech stack: Node.js, PostgreSQL, FHIR R4.
Fintech Payment Processing API
Designed a PCI-DSS compliant payment API for a lending platform. Processes 5,000 transactions per day with 99.99% uptime. Tech stack: Python, FastAPI, Stripe, Redis.
Ecommerce Order Management API
Built a REST API that syncs orders between Shopify and a custom warehouse system. Cut order processing time from 4 hours to 15 minutes. Tech stack: Ruby on Rails, PostgreSQL, Shopify API.
SaaS Subscription Billing API
Developed a GraphQL API for a SaaS platform that handles 10,000 active subscriptions. Reduced billing errors by 95%. Tech stack: Node.js, Apollo Server, Stripe, MongoDB.
Real Estate MLS Data API
Created an API that aggregates MLS listings from 15 sources into a single search endpoint. Increased property search speed by 60%. Tech stack: Python, FastAPI, PostgreSQL, Redis.
Logistics Tracking API
Built a real-time tracking API that ingests data from GPS devices and delivery APIs. Supports 50,000 tracking events per hour. Tech stack: Go, Kafka, PostgreSQL, Twilio.
Why teams hire us.
Fixed Price, Not Hourly
Every API 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 code.
8-12 Week Delivery
We ship production-ready APIs in 8-12 weeks. Our average delivery time is 10 weeks. We have maintained a 98% on-time delivery rate across 200+ projects.
HIPAA and PCI-DSS Compliance
We build APIs that meet HIPAA, PCI-DSS, and SOC 2 standards. Our healthcare APIs use FHIR R4 and encrypt data at rest and in transit. Our fintech APIs pass Stripe's PCI compliance review.
Full Ownership from Day One
You own the source code, documentation, and deployment scripts from the first commit. No licensing fees. No royalties. You can deploy the API anywhere or hand it to your internal team.
Senior Engineers Only
Our team includes engineers with 10+ years of experience building APIs at companies like Google, Amazon, and Stripe. Every code review is done by a senior engineer. No junior developers.
Post-Launch Support and Warranty
Every API comes with a 30-day warranty that covers bug fixes and critical issues. We offer ongoing support plans starting at $5,000 per month for maintenance, updates, and monitoring.
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.
─── share this page ───
