Experienced Custom API Development TeamAPI Development
Build APIs that scale from day one. 12-week MVPs with full ownership.
IRPR builds custom APIs using Node.js, Python, and Go. We design REST, GraphQL, and WebSocket endpoints that handle millions of requests per day. Every API ships with OpenAPI docs and Postman collections.
Projects start at $80K and range up to $250K for complex systems. We deliver MVPs in 12-14 weeks. Our APIs are built to SOC 2, HIPAA, and PCI-DSS standards where required.
SaaS founders hire us to build API-first backends. Enterprise IT teams come to us for legacy system modernization. Ecommerce brands need custom integration APIs. Each team works with a dedicated PM and senior engineers only.
Types of software we ship.
REST API Development
Standard RESTful APIs with token-based auth, rate limiting, and versioning. Tools: Express, FastAPI, Spring Boot.
GraphQL API Development
Flexible GraphQL APIs with Apollo Server, Prisma, and real-time subscriptions. Ideal for complex UIs and mobile apps.
WebSocket API Development
Real-time WebSocket APIs for live updates, chat, and collaborative tools. Uses Socket.io or AWS API Gateway WebSockets.
Microservices API Gateway
Centralized API gateway for microservices with authentication, caching, and rate limiting. Built on Kong or AWS API Gateway.
Third-Party API Integration
Integrate with Salesforce, Stripe, Shopify, HubSpot, and 100+ other platforms. Handles rate limits, webhooks, and data mapping.
Internal API Development
Private APIs for internal systems with role-based access, audit logs, and service mesh communication. Tools: gRPC, NATS, Consul.
Public API Developer Portal
Build developer portals with API keys, documentation, interactive playground (Stoplight, Swagger), and usage analytics.
API Security & Authentication
OAuth2, JWT, API key management, rate limiting, and DDoS protection. Integrates with Auth0, Okta, or custom identity providers.
We build for every business type.
SaaS Platforms
Ecommerce
Healthcare
Fintech
Logistics & Supply Chain
Why you need an experienced custom API development team
APIs are the backbone of modern software. Get them right the first time.
IRPR has shipped 200+ products across 50 countries. Our APIs handle over 10 million requests per day for clients in healthcare, fintech, and ecommerce. Every API is built by senior engineers with 8+ years of experience.
We follow the same process every time: Roadmap (week 2) gives you a fixed price, Design phase produces detailed architecture docs, Development uses test-driven approach, and Release includes CI/CD and monitoring.
The IRPR difference in custom API development
Most dev shops treat APIs as a side project. We treat them as the core product.
Generic shops juggle multiple projects and assign junior developers. They skip documentation and security reviews to save time. You end up with a fragile API that breaks on the first production load.
IRPR assigns senior engineers only. We write tests before code (TDD) and produce OpenAPI specs automatically. Every endpoint is load-tested and secured with OAuth2. We give you full ownership of the code and infrastructure.
- Junior developers work on your API
- No fixed timeline or budget
- Documentation is an afterthought
- Security audits skipped
- Slow communication (email only)
- You don't own the code
- Senior engineers with 8+ years experience
- Fixed price from Roadmap (week 2)
- OpenAPI/Swagger docs by default
- SOC 2, HIPAA, PCI-DSS compliance built in
- Daily standups with dedicated PM
- Full code ownership from day one
Our API development process
We ship production-ready APIs in 12 weeks with a repeatable four-phase process.
Phase 1: Discovery & Roadmap (Week 1-2). We map your endpoints, authentication flow, and data model. You get a fixed price and timeline. Phase 2: Architecture & Design (Week 3-4). We produce detailed API specs, database schema, and deployment plan.
Phase 3: Development & Integration (Week 5-10). We build endpoints with unit tests, integration tests, and load tests. Every PR is reviewed by a second senior engineer. Phase 4: Testing & Launch (Week 11-12). We deploy to production with monitoring and a rollback plan.
What ships with every custom API
Everything you need to run and maintain your API from day one.
We don't just hand you code. You get a complete production-ready system with monitoring, documentation, and CI/CD. Your team can take over immediately.
Every project includes infrastructure as code (Terraform), containerization (Docker), and a runbook for operations. We also provide a 30-day warranty for any issues.
- Source code in your private Git repo (GitHub/GitLab)
- CI/CD pipeline using GitHub Actions or CircleCI
- Sentry error tracking and performance monitoring
- Swagger/OpenAPI documentation
- Postman collection with example requests
- Unit test suite with 80%+ code coverage
- Docker images and docker-compose for local dev
- Deployment scripts for AWS, GCP, or Azure
- API monitoring with Datadog or New Relic
- Security audit report from automated scanning (OWASP)
What we ship in this practice.
Payment Processing API for Fintech Startup
Built a PCI-DSS compliant payment API that handles 50,000 transactions per day. Integrated with Stripe, Plaid, and KYC provider. Reduced transaction time by 40%.
Real-Time Inventory API for Logistics Company
Created a WebSocket API that syncs inventory across 12 warehouses in real time. Cut inventory sync time from 2 hours to 5 minutes. Used Redis, AWS Lambda, and Socket.io.
HIPAA-Compliant Healthcare Data Exchange API
Developed a FHIR-based API for sharing patient records between hospitals. Achieved HIPAA compliance with audit logs and encryption. Enabled 200+ providers to exchange data securely.
GraphQL API for SaaS Analytics Platform
Replaced a REST API with a GraphQL layer using Apollo Server and Prisma. Reduced frontend load times by 60% and cut data transfer by 40%. Used React, TypeScript, and PostgreSQL.
Supplier Integration API for Ecommerce Brand
Built a REST API that aggregates product catalogs from 5 suppliers into a single marketplace. Increased product update speed by 10x. Used .NET Core, Azure API Management, and Cosmos DB.
Real-Time Collaboration API for Media Tool
Developed WebSocket API for live collaborative editing. Achieved 99.9% uptime with auto-scaling. Used Socket.io, MongoDB, and Kubernetes.
Why teams hire us.
Fixed price from week 2
After the Roadmap phase (week 2), you get a fixed price for the entire project. No hourly billing, no surprise invoices. IRPR has delivered 200+ projects on budget.
Senior engineers only (8+ years)
Every engineer on your project has 8+ years of experience. We don't staff juniors. Our team average is 12 years in production environments.
Full code ownership
All code is delivered to your private repository from day one. You own everything. No proprietary frameworks. No vendor lock-in.
Ship in 12 weeks or less
Our typical MVP ships in 12 weeks. We have a 98% on-time record. If we miss the deadline, we discount future work.
Built to compliance standards
We build APIs to SOC 2, HIPAA, PCI-DSS, and FERPA standards. Our security team runs automated scans and manual pen tests before release.
Dedicated PM with daily updates
You get a dedicated project manager who sends daily Slack updates and hosts weekly demos. Average response time under 2 hours.
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.