Experienced API Development VendorAPI Development
Ship production-grade APIs that handle millions of requests. Our senior engineers deliver REST, GraphQL, and gRPC endpoints in 8-12 weeks.
At IRPR, we build APIs that power SaaS platforms, mobile apps, and internal tools. Our engineers use Node.js, Express, FastAPI, and Kong for API gateways to create endpoints that handle 10,000+ requests per second.
Each project ships in 8-12 weeks with a fixed price between $80K and $250K. We design for HIPAA, PCI-DSS, and SOC 2 compliance, with automated CI/CD pipelines running on GitHub Actions.
We work with CTOs scaling their product engineering, product managers launching new API-first features, enterprise architects modernizing legacy integrations, and startup founders building their MVP with a reliable API layer.
Types of software we ship.
REST API Development
Build stateless RESTful APIs with documented endpoints. I use Express.js and OpenAPI specs to ensure consistency.
GraphQL API Development
Implement flexible GraphQL schemas with Apollo Server. Clients query exactly what they need, reducing payload sizes by 40% on average.
Microservices API Gateway
Deploy a Kong or Envoy API gateway to route traffic across 10+ microservices. Enforce rate limiting, authentication, and logging at the edge.
API Integration Middleware
Connect third-party services like Stripe, Salesforce, and Slack using custom middleware. Abstract away API differences with a unified interface.
Real-Time API (WebSocket)
Build real-time endpoints with Socket.io or WebSocket for live data streaming. Achieve sub-100ms latency for chat, notifications, and live dashboards.
API Management Platform
Create a developer portal with API keys, usage analytics, and documentation. Use AWS API Gateway or Azure APIM to scale automatically.
Internal API (B2B)
Design private APIs for partner integrations. Support OAuth2 authentication and detailed audit logs for enterprise compliance.
Third-Party API Wrapper
Wrap external APIs like Twilio or SendGrid with a consistent SDK. Cache responses in Redis to reduce external API costs by 30%.
We build for every business type.
SaaS Platforms
Financial Services
Healthcare
Ecommerce
Real Estate
Why an Experienced API Development Vendor Matters
Building APIs that scale requires more than just code.
IRPR has shipped 200+ API projects across 50+ countries. Our engineers design for throughput, security, and maintainability from the first endpoint. Each API includes automated load testing, rate limiting, and error tracking via Sentry.
We enforce consistent API design patterns across your entire platform. Every endpoint follows RESTful conventions or GraphQL schema best practices, with OpenAPI documentation generated automatically.
Generic Development Shops vs. IRPR
Not all API development vendors deliver the same quality.
Many agencies start coding without defining contract-first API specs. This leads to inconsistent endpoints, mismatched data formats, and months of rework. IRPR begins every API project with an OpenAPI or GraphQL schema designed and reviewed by senior engineers.
We also include automated test suites covering 90%+ code paths, CI/CD pipelines, and production monitoring from week one. Your API ships with documentation, load tests, and a runbook.
- No API contract upfront
- Inconsistent error handling
- Missing rate limiting
- No API documentation
- Ad-hoc testing
- Delayed delivery
- Contract-first API design
- Standardized error responses
- Rate limiting and throttling
- OpenAPI documentation auto-generated
- 90%+ test coverage with CI
- Fixed 8-12 week delivery
Our API Development Process
We ship production-ready APIs in 4 phases.
Each phase is gated by deliverables and a fixed budget. You know exactly what you're paying for and when it ships.
The process starts with a 2-week Roadmap phase where we define the API contract, data model, and integration points. Then we build, test, and release.
What Ships with Your API
Our API delivery includes more than just endpoints.
You get full source code, infrastructure code, and reusable SDKs. No black boxes.
We hand over everything needed to maintain and scale your API independently.
- Source code in your private GitHub repo
- OpenAPI or GraphQL schema documentation
- Automated CI/CD pipeline on GitHub Actions
- Load test suite using k6
- Postman collection with example requests
- Sentry error tracking integrated
- Runbook with deployment and rollback steps
- One-year warranty on all code
- SDK examples for JavaScript and Python
- Rate limiting and authentication middleware
What we ship in this practice.
Payment Processing API for Fintech Startup
Built a REST API handling $2M in daily transactions using FastAPI and Stripe. Reduced manual reconciliation from 4 hours to 10 minutes per day.
Patient Data API for Telehealth Platform
Developed a HIPAA-compliant GraphQL API connecting 500+ clinics. Patient data synced in under 200ms with end-to-end encryption.
Product Catalog API for Ecommerce Brand
Created a headless commerce API using Next.js and Shopify Storefront API. Product search latency dropped to 50ms, increasing conversion by 12%.
MLS Data API for Real Estate Aggregator
Designed a REST API that ingests MLS listings from 10+ regional databases. Property data refreshed every 15 minutes with 99.9% uptime.
Analytics API for SaaS Platform
Built a real-time analytics API using WebSockets and ClickHouse. Dashboard queries returned in 200ms for 10,000 concurrent users.
Inventory Sync API for Logistics Company
Developed a middleware API connecting warehouse management system to Shopify and Amazon. Reduced inventory errors by 90% with hourly syncs.
Why teams hire us.
Fixed Price, Not Hourly
Every API project gets a fixed quote after the Roadmap phase (week 2). No surprise billing or scope creep.
Senior Engineers Only
Our team averages 12+ years of experience. Every API endpoint is reviewed by a second senior engineer before merge.
Production-Ready from Day One
Your API ships with load tests, error tracking, and CI/CD. We don't hand over a prototype; we hand over production infrastructure.
Contract-First Design
We define the API contract using OpenAPI or GraphQL schemas before writing code. This eliminates integration surprises and speeds up frontend development.
Compliance Built In
We build APIs that meet HIPAA, PCI-DSS, and SOC 2 requirements. Encryption, audit logs, and access controls are part of every project.
Full Ownership with Warranty
You own all source code and infrastructure. We provide a one-year warranty fixing any bugs or performance issues at no extra cost.
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.