Premium Custom API Development FirmAPI Development
We build production-grade APIs for your product. 8-12 week delivery with fixed pricing.
IRPR is a premium custom API development firm. We design and build REST, GraphQL, and gRPC APIs using Node.js, Go, Python, and PostgreSQL. Every API ships with OpenAPI 3.0 documentation and automated testing.
We deliver a production-ready API in 8-12 weeks. Pricing is fixed from $80K to $250K depending on complexity. All APIs meet HIPAA, PCI-DSS, or SOC 2 compliance requirements.
CTOs hire us to replace legacy SOAP APIs. Product managers hire us to build the backend for a new SaaS. Startup founders hire us to create the API layer for their mobile app. Each gets a dedicated senior engineer and a fixed timeline.
Types of software we ship.
REST API development
Stateless, resource-oriented APIs using HTTP methods. Built with Express.js or FastAPI. Includes rate limiting and caching.
GraphQL API development
Flexible query language for frontend-driven apps. Uses Apollo Server or Yoga. Reduces over-fetching by 40% on average.
gRPC API development
High-performance RPC framework using Protocol Buffers. Ideal for microservices. 10x faster than REST for internal services.
Webhook API development
Event-driven APIs that push data to your clients. Built with AWS EventBridge or Stripe webhooks. Handles 10,000 events per second.
API integration middleware
Custom middleware to connect third-party services like Salesforce, HubSpot, and Stripe. Handles authentication, retries, and logging.
API security gateway
Centralized gateway for authentication, rate limiting, and logging. Uses Kong or Envoy. Blocks 99.9% of unauthorized requests.
Microservices API layer
Decoupled API layer for microservices architectures. Uses Docker and Kubernetes. Supports service discovery and load balancing.
Real-time API (WebSocket)
Low-latency, bidirectional APIs for chat, live dashboards, and gaming. Built with Socket.io or WebSocket API. Latency under 50ms.
We build for every business type.
Healthcare
Fintech
Ecommerce
SaaS
Logistics
Why choose a premium custom API development firm
A generic agency builds one-size-fits-all APIs. IRPR builds APIs that match your exact data model and scale to millions of requests.
We start with your data schema. Whether you use PostgreSQL, MongoDB, or DynamoDB, we design the API endpoints around your business logic. Every endpoint includes input validation, error handling, and pagination by default.
Our APIs handle 10,000 requests per second on a single instance. We use Redis for caching and Cloudflare for CDN. Uptime is 99.9% guaranteed with automated failover across three availability zones.
The difference between a generic dev shop and a premium API firm
Most agencies treat API development as an afterthought. IRPR treats it as the core product.
Generic shops write monolithic code with no documentation. They skip load testing and deploy without monitoring. You end up with a fragile API that breaks under traffic.
IRPR writes modular, testable code from day one. We include OpenAPI docs, automated load tests with k6, and Datadog monitoring. Every API ships with a runbook for your ops team.
- No API documentation
- No load testing
- No monitoring or alerts
- No rate limiting
- No versioning strategy
- No security audit
- OpenAPI 3.0 docs auto-generated
- k6 load tests with 10K RPS target
- Datadog dashboards and PagerDuty alerts
- Rate limiting with Redis and token bucket
- Semantic versioning with deprecation policy
- OWASP top 10 security scan every sprint
Our API development process in 4 phases
We follow a structured process from idea to production. Each phase has a clear deliverable.
Phase 1 is the Roadmap. In week 2, you get a fixed price quote and a detailed API specification. Phase 2 is the build. We work in 2-week sprints with a demo at the end of each sprint.
Phase 3 is the release. We deploy to staging, run a 48-hour load test, and then deploy to production. Phase 4 is the handoff. You get full source code, CI/CD pipeline, and a 30-day warranty.
What ships with every API project
Every API project includes these deliverables by default. No hidden costs.
We ship everything your team needs to maintain and scale the API. Source code, documentation, and infrastructure as code are all included.
You get a fully automated CI/CD pipeline that runs tests, builds, and deploys on every commit. No manual steps.
- Source code in your GitHub repo
- OpenAPI 3.0 documentation
- CI/CD pipeline on GitHub Actions
- Docker containers for local development
- k6 load test scripts
- Datadog monitoring dashboard
- PagerDuty alert configuration
- Postman collection for testing
- Runbook for on-call engineers
- 30-day warranty with bug fixes
What we ship in this practice.
Healthcare patient data API
Built a HIPAA-compliant REST API for a telehealth startup. Handles 50,000 patient records with FHIR standard. Reduced data retrieval time from 3 seconds to 200ms. Tech stack: Node.js, PostgreSQL, Redis, AWS Lambda.
Fintech payment processing API
Designed a PCI-DSS compliant API for a payment gateway. Processes 10,000 transactions per minute with 99.99% uptime. Integrated with Stripe and Plaid. Tech stack: Go, PostgreSQL, Kafka, Kubernetes.
Ecommerce product catalog API
Created a GraphQL API for a multi-vendor marketplace. Serves 1 million product listings with faceted search. Reduced page load time by 60%. Tech stack: Apollo Server, MongoDB, Elasticsearch, Cloudflare.
SaaS billing subscription API
Built a REST API for a subscription management platform. Handles 100,000 active subscriptions with Stripe integration. Automated invoice generation saved 20 hours per week. Tech stack: Python, Django, PostgreSQL, Celery.
Logistics route optimization API
Developed a gRPC API for a delivery fleet. Optimizes 5,000 routes daily using Google OR-Tools. Reduced fuel costs by 15%. Tech stack: Go, Protocol Buffers, Redis, Docker.
Real estate MLS data API
Created a REST API for a real estate platform. Aggregates data from 50 MLS feeds with deduplication. Reduced data sync time from 4 hours to 15 minutes. Tech stack: Node.js, PostgreSQL, RabbitMQ, AWS S3.
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 a single line of code.
Senior engineers only
We assign a lead engineer with 10+ years of experience to every project. No junior developers, no offshore teams. Your API is built by someone who has shipped 20+ production APIs.
8-12 week delivery
We deliver a production-ready API in 8-12 weeks. Our process is optimized for speed without cutting corners. 98% of our projects ship on time.
Full code ownership
You own every line of code we write. No licensing fees, no lock-in. We transfer the entire codebase, CI/CD pipeline, and infrastructure config at the end of the project.
Compliance built in
We build HIPAA, PCI-DSS, and SOC 2 compliance into the API from day one. Encryption at rest and in transit, audit logs, and access controls are standard.
Post-launch support
We include a 30-day warranty with every project. After that, we offer ongoing maintenance at a fixed monthly rate. Your API stays secure and up to date.
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.
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