Premium Custom API Development DevelopersAPI Development
You need APIs that scale, secure data, and integrate with your stack. Our senior engineers deliver production-ready APIs in 8-12 weeks with fixed pricing.
IRPR builds custom APIs using FastAPI, Node.js, and Go. Our developers design RESTful and GraphQL endpoints with auto-generated documentation via OpenAPI.
We ship full API codebases with CI/CD pipelines, Postman collections, and monitoring dashboards. Average timeline is 8-12 weeks, pricing ranges from $80K to $250K depending on complexity. All APIs comply with HIPAA, PCI-DSS, or SOC 2 as needed.
SaaS founders building a multi-tenant platform, fintech CTOs requiring PCI-compliant payment APIs, healthcare IT managers needing HL7 FHIR integration, and ecommerce directors connecting Shopify to ERP systems.
Types of software we ship.
REST API Development
Stateless endpoints for CRUD operations using FastAPI or Express. Includes Swagger docs, rate limiting, and versioning.
GraphQL API Development
Query-optimized APIs with Apollo Server or Hasura. Enables frontend teams to fetch exactly what they need.
Microservices API Gateway
Centralized entry point for microservices using Kong or Envoy. Handles auth, routing, and load balancing.
Third-Party API Integration
Connect your platform to Stripe, Salesforce, or HubSpot. Handles webhooks, OAuth flows, and error retry logic.
Real-time WebSocket API
Bidirectional communication for chat, live dashboards, or gaming. Built with Socket.io or WebSockets over Node.js.
Data API for ML/AI
Expose model predictions and datasets via TensorFlow Serving or FastAPI. Optimized for high throughput and low latency.
Mobile Backend API
REST/GraphQL backend for iOS and Android apps. Includes push notifications via Firebase Cloud Messaging.
B2B Integration API
Automated data exchange between enterprise systems like ERP, CRM, and legacy databases. Uses EDI standards or custom JSON/REST.
We build for every business type.
SaaS platforms
Fintech companies
Healthcare providers
Ecommerce businesses
Logistics and supply chain
By the numbers: custom API development at IRPR
Every project ships with measurable outcomes.
Our team has built APIs for 200+ products across 12 industries. Each API undergoes load testing to handle 10,000+ concurrent requests. We track response times, error rates, and uptime from day one.
Clients see a 40% reduction in integration time after switching to our custom APIs. Our fixed-price model means you know the cost before a single line of code is written.
The difference between generic API shops and IRPR
Not all API developers are the same. Here's what you get with IRPR.
Generic agencies assign junior devs and bill by the hour. Your project runs without a clear endpoint.
IRPR assigns a lead engineer who maps your endpoints in the Roadmap phase. You get a fixed price and a guaranteed timeline.
- Hourly billing, no cap
- Junior developers with 2 years experience
- No documentation or tests shipped
- No compliance expertise
- One-size-fits-all tech stack
- No post-deployment monitoring
- Fixed price from week 2
- Senior engineers with 8+ years each
- Auto-generated OpenAPI docs and test suites
- HIPAA, PCI-DSS, SOC 2 compliance built in
- Tech stack chosen for your use case (FastAPI, Node.js, Go)
- Sentry and Datadog monitoring included
How we build your custom API
A repeatable 4-phase process from idea to production.
Every API starts with a discovery call. By week 2 you have a fixed-price roadmap. No surprises.
We ship working endpoints every two weeks. You see progress and provide feedback throughout.
What you get in every API project
Our deliverables make sure you're never locked in.
We hand over everything you need to run and modify the API yourself. No proprietary frameworks, no black boxes.
Every project includes documentation and monitoring tools so your team can maintain the API after launch.
- Full source code in your private GitHub repo
- OpenAPI (Swagger) documentation generated automatically
- CI/CD pipeline using GitHub Actions
- Postman collection with example requests
- Test suite with 90%+ code coverage
- Deployment scripts for AWS ECS or GCP Cloud Run
- Sentry error tracking and Datadog performance monitoring
- Rate limiting and API key authentication
- 30 days of post-launch support and bug fixes
What we ship in this practice.
Payment API for a fintech startup
Built a PCI-compliant payment API using Python FastAPI and Stripe Connect. The client reduced failed transactions by 25% and onboarded their first 100 merchants in 8 weeks.
Healthcare data API for a telemedicine platform
Developed a FHIR-compliant API with Node.js and Azure FHIR Service. Enabled real-time patient data exchange across 3 hospital systems, cutting record retrieval time from 3 days to 15 minutes.
Ecommerce product API for a multi-tenant marketplace
Created a RESTful product catalog API using Django REST Framework and PostgreSQL. The marketplace indexed 50,000 products and increased search speed by 60%.
Real-time tracking API for a logistics company
Built a WebSocket API with Socket.io and Redis for live shipment tracking. Reduced driver communication delays by 80% and improved ETAs accuracy to under 1 minute.
Subscription management API for a SaaS platform
Developed a GraphQL API with Apollo Server and Stripe Billing. The client reduced churn by 15% through automated payment retries and dunning workflows.
CRM integration API for a real estate agency
Built a middleware API using Express.js and Salesforce REST API. Automated lead capture from Zillow and Realtor.com, saving agents 10 hours per week on manual entry.
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.
Senior engineers only
Our team averages 8+ years of experience building APIs at companies like Amazon and Google. Every developer writes production code on day one.
Compliance built in
We handle HIPAA, PCI-DSS, and SOC 2 compliance as part of the build. No separate audit phase needed after delivery.
Production-ready from day one
Every API ships with CI/CD, monitoring, and documentation. Your team can start using it immediately without additional setup.
Full code ownership
You own every line of code written for your project. No licensing fees, no proprietary frameworks, no restrictions.
Global reach with async workflow
Our team works across time zones in 50+ countries. We use async communication and overlapping hours to ensure daily progress regardless of your location.
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.