Experienced API Development AgencyAPI Development
We build production-ready APIs for B2B and B2C platforms. 200+ products shipped with 98% on-time delivery.
IRPR is an experienced API development agency. We build REST, GraphQL, and gRPC APIs using Node.js, Go, and Python. Every API ships with auto-generated documentation via Swagger and OpenAPI 3.0.
Our fixed-price model starts at $80,000 per API project. Timelines range from 8 to 12 weeks for a production-ready MVP. We comply with HIPAA, PCI-DSS, SOC 2, and GDPR out of the box.
We work with CTOs at SaaS startups who need a scalable API to launch their product, engineering directors at healthcare companies who require HIPAA-compliant data exchange, and product owners at ecommerce brands who need real-time inventory APIs.
Types of software we ship.
REST API Development
Stateless endpoints with JSON responses. Ideal for public APIs consumed by web and mobile apps.
GraphQL API Development
GraphQL schema design with Apollo or Hasura. Clients query exactly what they need, reducing overfetching.
gRPC API Development
High-performance APIs using Protocol Buffers. Used for microservices communication and low-latency systems.
Third-Party API Integration
Connect your product to Salesforce, Stripe, Shopify, or Twilio. We handle rate limiting, error handling, and retries.
API Gateway & Management
Set up Kong or AWS API Gateway with OAuth 2.0, rate limiting, and usage analytics.
Event-Driven APIs
Build reactive APIs with WebSockets, Server-Sent Events, or Kafka. Real-time updates for dashboards and notifications.
API Security & Compliance
Implement JWT, OAuth 2.0, API keys, and IP whitelisting. We audit for HIPAA, PCI-DSS, and GDPR requirements.
API Documentation & Testing
Auto-generate OpenAPI docs, set up Postman collections, and write integration tests with 95%+ coverage.
We build for every business type.
SaaS platforms
Healthcare
Fintech & Payments
Ecommerce & Retail
Logistics & Travel
Why You Need an Experienced API Development Agency
Building a reliable API requires more than just REST endpoints. You need architecture that scales, secure authentication, and documentation your team can trust.
IRPR has shipped over 200 API-first products across 50+ countries. Our engineers design APIs that handle 10,000 requests per second on average, with p99 latency under 200ms. We use Memcached and Redis for caching and implement circuit breakers via Hystrix.
Every API we build includes automated integration tests, CI/CD pipelines on GitHub Actions, and a 99.9% uptime SLA. We also provide full API documentation in OpenAPI 3.0 format as part of every delivery.
How IRPR Differs from Generic API Development Shops
Most API agencies treat your project as just another ticket. We treat it as a product with clear ownership and fixed budgets.
Generic shops start coding without a clear spec, then bill you for every extra call. IRPR follows a structured roadmap from week 1: we define endpoints, data models, auth flows, and error handling before writing a single line.
We also handle compliance from day one. If you need HIPAA or PCI-DSS, we include BAA agreements and logging in our standard architecture. No surprise costs for security audits.
- No API design review before coding
- Hourly billing with scope creep
- No performance testing until launch
- No automated documentation
- No compliance checks (HIPAA, PCI)
- One-size-fits-all tech stack
- Design review in week 1 with OpenAPI spec
- Fixed price from Roadmap phase (week 2)
- Load testing in week 6 with k6 or Artillery
- Auto-generated docs via Swagger
- Built-in compliance with logging & encryption
- Custom stack: Node, Go, Python, GraphQL
Our API Development Process
We deliver production-ready APIs in 8-12 weeks using a four-phase process. Each phase ends with a review and fixed milestone.
Phase 1 (Idea, week 1): We map your business domain to data models and endpoints. You get a detailed API specification.
Phase 2 (Roadmap, week 2): We finalize scope, choose tech stack, and set a fixed price. No surprises.
What Ships with Every API
Every API project from IRPR comes with a standard set of deliverables. No hidden extras.
We include source code in your Git repo, CI/CD pipelines, error monitoring via Sentry, and a 1-hour video walkthrough. All documentation is provided in Markdown and OpenAPI format.
You also get a full testing suite with 95% code coverage, performance benchmarks, and a 30-day post-launch support window.
- Source code in your Git repository
- CI/CD pipeline on GitHub Actions
- Sentry error tracking
- Auto-generated OpenAPI documentation
- Postman collection with example requests
- Integration tests with 95% coverage
- Deployment runbook for AWS or GCP
- Load test results (k6 report)
- 1-hour handover video call
- 30-day post-launch support
What we ship in this practice.
Healthcare Data Exchange API
Built a FHIR-compliant API for a telemedicine platform. The API handled 5,000+ clinical data transactions per day with 200ms median latency. Tech stack: Node.js, PostgreSQL, Auth0, HIPAA compliance.
Payment Gateway Aggregator API
Designed a unified API wrapping Stripe, Braintree, and PayPal. Reduced integration time for merchants from 6 weeks to 2 days. Tech stack: Go, Redis, MySQL, PCI-DSS Level 1.
Real-Time Inventory API for Ecommerce
Built a WebSocket API that synchronized inventory across 50+ retail locations. Update latency dropped from 30 seconds to under 1 second. Tech stack: Node.js, Kafka, MongoDB, Shopify integration.
SaaS Billing & Subscription API
Created a billing API with usage metering and invoice generation. Automated monthly billing for 10,000 active subscribers. Tech stack: Python, Django, Stripe, Celery, SOC 2 compliance.
MLS Data Integration API
Developed a REST API that aggregates property listings from 12 MLS sources. Agents get unified search with 5-second average response time. Tech stack: GraphQL, Elasticsearch, Redis, AWS Lambda.
Learning Management System API
Built a FERPA-compliant API for a university LMS. Migrated 50,000 student records with zero data loss. Tech stack: Node.js, Postgres, Apollo GraphQL, Google Cloud.
Why teams hire us.
Fixed price from week 2
We define the full scope in the Roadmap phase and lock the price. No hourly billing. No surprise invoices. Projects range from $80,000 to $250,000 depending on complexity.
Senior engineers only
Our team averages 10 years of experience. Every engineer is a full-stack developer capable of designing, building, and deploying your API independently. We do not use junior or offshore staff.
Compliance built-in
We include HIPAA, PCI-DSS, SOC 2, and GDPR requirements in our standard API architecture. Logging, encryption (AES-256), and access controls are included, not add-ons.
Full code ownership
You own all source code, documentation, and infrastructure configurations. There is no vendor lock-in. We transfer everything to your GitHub account upon project completion.
Proven track record
We have shipped over 200 API-first products for clients in 50+ countries. Our on-time delivery rate is 98% based on fixed milestone tracking.
Async-first collaboration
We work with clients in New York, Los Angeles, London, and Singapore. Our process uses daily standups on Slack, weekly video calls, and overlapping work hours for real-time feedback.
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.