Senior API Development StudioSenior API
Hire a senior API development studio that delivers production-ready APIs in 8-12 weeks. You get fixed pricing and full code ownership.
IRPR is a senior API development studio. We build REST, GraphQL, and gRPC APIs using Node.js, Go, and Python with PostgreSQL, Redis, and Kafka for high performance.
Every API project ships in 8-12 weeks with a fixed price between $80K and $250K. We handle compliance for HIPAA, PCI-DSS, and SOC 2 out of the box.
Our clients are SaaS founders scaling integrations, fintech CTOs needing PCI-compliant payment APIs, healthcare startups building FHIR-based data exchange, and enterprise teams modernizing legacy systems with microservices.
Types of software we ship.
REST API Development
Build scalable RESTful APIs with documented endpoints using OpenAPI 3.0 and deployed on AWS ECS.
GraphQL API Development
Design GraphQL schemas with Apollo Server, enabling flexible data queries and reducing over-fetching.
Webhook System Development
Create reliable webhook delivery systems with retry logic, signature verification, and real-time event streams.
API Gateway Development
Develop centralized API gateways with rate limiting, authentication (OAuth2/JWT), and route management using Kong or NGINX.
Microservice API Layer
Build inter-service communication APIs using gRPC or REST, with service discovery and circuit breakers via Envoy.
Payment API Integration
Integrate Stripe, Braintree, or Adyen APIs with idempotency keys, webhook handling, and PCI-DSS compliance.
Data API (CRUD + Analytics)
Expose database tables and analytics endpoints via REST or GraphQL, with pagination, filtering, and caching.
Third-Party API Wrapper
Create unified API wrappers that aggregate multiple external services (CRM, shipping, payments) into a single interface.
We build for every business type.
SaaS platforms
Fintech companies
Healthcare organizations
Ecommerce businesses
Media & content platforms
Our Senior API Development Studio by the Numbers
We have shipped over 200 API projects for clients in 50+ countries.
Every API we build is designed for scale and maintainability. Our team uses strict code reviews, automated testing, and CI/CD pipelines to ensure reliability.
We track performance metrics like response time, error rate, and uptime. Our APIs achieve 99.9% uptime with under 50ms p99 latency on average.
Why Choose IRPR Over a Generic Dev Shop
Most development agencies promise senior developers but deliver junior talent and vague timelines.
Generic dev shops use hourly billing and often miss deadlines. They may not have experience with API security, rate limiting, or documentation standards like OpenAPI.
IRPR hires only senior engineers with at least 7 years of experience. We provide a fixed price after the Roadmap phase and deliver documented, tested APIs with CI/CD built in.
- Hourly billing with no cost cap
- Unclear API documentation
- No automated tests shipped
- Minimal security review
- No compliance experience (HIPAA, PCI-DSS)
- Long ramp-up time with junior developers
- Fixed price from the Roadmap
- OpenAPI 3.0 spec delivered first
- 100% test coverage for critical paths
- OWASP security audit on every API
- Built-in HIPAA, PCI-DSS, SOC 2 compliance
- Senior engineers start within 1 week
Our API Development Process in 4 Phases
From discovery to deployment, we follow a structured process that ensures your API meets production standards.
The process begins with deep discovery where we map your data model and business logic. We then produce a roadmap with fixed pricing and timeline.
Development follows agile sprints with weekly demos. We deploy to staging for your team to test before final release.
What Ships with Every API Project
We don't just give you code. Every delivery includes everything needed to run, maintain, and extend your API.
Every delivery includes source code, CI/CD pipelines, automated tests, API documentation via OpenAPI 3.0, Postman collections, deployment scripts for AWS, monitoring with Datadog, error tracking with Sentry, and a security audit report.
- Source code in your Git repository (GitHub/GitLab/Bitbucket)
- CI/CD pipeline with unit and integration tests
- Automated API documentation via OpenAPI 3.0
- Postman collection for manual testing
- Deployment manifests for AWS ECS, Kubernetes, or serverless
- Monitoring dashboard in Datadog or Grafana
- Error tracking with Sentry
- Security audit report (OWASP Top 10)
- Rate limiting and authentication (JWT / OAuth2)
- Performance benchmarks with p50/p99 latency
What we ship in this practice.
Payment Processing API for Fintech Startup
Built a PCI-DSS compliant payment API that processes 10,000 transactions per hour with idempotency and webhook retries. Tech stack: Node.js, Express, PostgreSQL, Stripe API, deployed on AWS Fargate.
FHIR-Based API for Healthcare Data Exchange
Developed a FHIR R4 compliant API for a telemedicine platform, enabling secure patient data exchange with EHR systems. Reduced integration time by 6 weeks. Tech stack: Python, FastAPI, MongoDB, HL7 FHIR.
GraphQL API for Ecommerce Platform
Created a GraphQL API that aggregates product, inventory, and order data from multiple microservices, reducing frontend load times by 40%. Tech stack: Apollo Server, TypeScript, PostgreSQL, Redis.
Unified API Wrapper for SaaS Integration Hub
Built a single API that wraps 15 third-party services (CRM, shipping, billing) with consistent authentication and rate limiting. Tech stack: Go, Envoy proxy, Swagger, OAuth2.
Real-Time Data Streaming API for Logistics
Deployed a WebSocket-based API for real-time tracking of shipments, handling 5,000 concurrent connections with sub-100ms latency. Tech stack: Node.js, Socket.IO, Redis, Kafka.
Content Delivery API for Media Company
Built a RESTful API for video streaming and metadata delivery, serving 1 million requests per day with 99.9% uptime. Tech stack: Python, Django, PostgreSQL, CloudFront CDN.
Why teams hire us.
Senior Engineers Only
Every IRPR engineer has 7+ years of experience and has shipped at least 10 production APIs. No junior developers, no outsourcing. You work directly with the same senior talent throughout the project.
Fixed Price, Not Hourly
We provide a fixed price after the Roadmap phase (week 2). The price covers the entire project scope. No hourly billing, no surprise invoices, no scope creep charges. Typical API projects range from $80K to $250K.
Production-Ready from Day 1
Every API ships with automated tests, CI/CD pipelines, monitoring (Datadog), and error tracking (Sentry). You get a fully documented API with OpenAPI 3.0 and a Postman collection.
Compliance Built In
We build HIPAA, PCI-DSS, and SOC 2 compliance into the architecture. That means encryption at rest and in transit, audit logs, access controls, and security audits on every project.
8-12 Week Delivery
Most API projects ship in 8-12 weeks. We run agile sprints with weekly demos so you see progress every week. The first working endpoints are available for testing by week 4.
Full Code Ownership
You own 100% of the source code, both infrastructure (Terraform/CDK) and application code. We never license or resell your IP. The code is in your repository from sprint 1.
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.