Senior Backend API Development DevelopersAPI Development
We build production-grade APIs with senior engineers. 8-12 week MVPs with fixed pricing, no hourly billing.
IRPR builds backend APIs using senior engineers who have shipped over 200 products. We use Node.js, Python, Go, and Java with frameworks like Express, FastAPI, Gin, and Spring Boot to create RESTful and GraphQL APIs that handle thousands of requests per second.
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, and include CI/CD pipelines, automated testing, and API documentation with Swagger or Postman.
CTOs hire us when their in-house team lacks senior API talent. Product managers hire us to build integrations with Salesforce, Stripe, or HubSpot. Startup founders hire us to launch a SaaS MVP with a clean, scalable API from day one.
Types of software we ship.
REST API Development
Build stateless RESTful APIs with Express.js or FastAPI. Includes CRUD operations, authentication with JWT, and rate limiting.
GraphQL API Development
Develop flexible GraphQL APIs using Apollo Server or Yoga. Supports real-time subscriptions and efficient data fetching.
Microservices API Architecture
Design and build microservices with Docker and Kubernetes. Each service has its own database and communicates via gRPC or message queues.
Third-Party API Integration
Connect your app to Stripe, Salesforce, HubSpot, or Twilio. Includes error handling, retry logic, and webhook management.
API Gateway Development
Implement an API gateway using Kong or AWS API Gateway. Handles authentication, rate limiting, and request routing.
Real-Time API Development
Build real-time APIs with WebSockets or Server-Sent Events using Socket.io or Pusher. Ideal for chat, live updates, and notifications.
Backend API for Mobile Apps
Create scalable backend APIs for iOS and Android apps using Firebase or custom Node.js servers. Supports offline sync and push notifications.
API Security and Compliance
Secure APIs with OAuth 2.0, API keys, and TLS. Includes penetration testing and compliance documentation for HIPAA or PCI-DSS.
We build for every business type.
Fintech
Healthcare
Ecommerce
SaaS
Real Estate
Why Senior Backend API Development Developers Matter
Senior engineers build APIs that scale, stay secure, and ship on time.
IRPR only hires senior engineers with 8+ years of experience. Our developers have built APIs for companies processing over $1B in transactions. They know how to handle edge cases, optimize database queries, and design for high availability from the start.
A junior developer might take 16 weeks to build an API that works for 100 users. Our senior backend API development developers deliver a production-grade API in 8-12 weeks that handles 10,000 concurrent users. We include load testing with k6 and monitoring with Datadog.
Generic Dev Shop vs IRPR Senior Backend API Developers
Most agencies assign junior developers to backend API projects. IRPR does not.
A generic dev shop might quote you $50K for an API project, then assign a junior developer who learned Node.js last year. You end up with spaghetti code, no tests, and a timeline that doubles.
IRPR assigns a senior backend API development developer who has shipped 10+ production APIs. You get a fixed price, a clear roadmap, and code that passes security audits.
- Junior developers with 1-2 years experience
- Hourly billing with no cap
- No API documentation
- No automated tests
- No load testing
- No post-launch monitoring
- Senior engineers with 8+ years experience
- Fixed price from Roadmap phase
- Swagger/Postman documentation included
- Unit and integration tests with Jest
- Load testing with k6
- Datadog monitoring and alerts
How We Build Your Backend API
Our process from idea to production in 4 phases.
Every API project follows our Idea to Roadmap to Product to Release framework. We start with a discovery call to understand your data model, endpoints, and performance needs.
By week 2, you get a detailed Roadmap with a fixed price. By week 12, your API is live with documentation, tests, and monitoring.
What Ships With Every API Project
Every deliverable is yours to keep. No black boxes.
When IRPR builds your backend API, you get everything needed to run, maintain, and scale it. No hidden dependencies, no ongoing license fees.
All code is in your GitHub repository from day one. You own the IP, the documentation, and the deployment scripts.
- Source code in your private GitHub repo
- CI/CD pipeline with GitHub Actions
- API documentation in Swagger or Postman
- Unit and integration tests with Jest
- Load testing report from k6
- Docker containers for local development
- Database migration scripts
- Monitoring dashboard in Datadog
- Error tracking with Sentry
- Post-launch 30-day warranty
What we ship in this practice.
Payment Processing API for Fintech Startup
Built a PCI-DSS compliant payment API using Node.js, Express, and Stripe. Handles 500 transactions per second. Reduced payment failure rate by 40%.
EHR Integration API for Healthcare SaaS
Developed a HIPAA compliant API to sync patient data with Epic and Cerner. Used Python, FastAPI, and FHIR standards. Cut manual data entry by 12 hours per week per clinic.
Order Management API for Ecommerce Brand
Created a RESTful API for multi-warehouse inventory management using Go and PostgreSQL. Integrated with Shopify and ShipStation. Reduced order processing time by 60%.
Multi-Tenant API for SaaS Platform
Built a GraphQL API with Apollo Server and PostgreSQL for a B2B SaaS. Supports 200 tenants with isolated data. Achieved 99.99% uptime over 12 months.
MLS Data API for Real Estate Platform
Designed and implemented an API to aggregate MLS listings from 50+ sources using Node.js and Elasticsearch. Reduced search latency from 3 seconds to 200ms.
Real-Time Notification API for Logistics App
Developed a WebSocket-based API using Socket.io and Redis for real-time shipment tracking. Handles 10,000 concurrent connections. Reduced customer support tickets by 30%.
Why teams hire us.
Senior engineers only
Every developer on your project has 8+ years of backend experience. No juniors, no offshore teams. Our senior backend API development developers have shipped APIs for companies like Stripe and Salesforce.
Fixed price, not hourly
You get a fixed quote in the Roadmap phase (week 2). No hourly billing, no surprise invoices. The price covers the full API build, including documentation and deployment.
8-12 week delivery
Most API projects ship in 8 to 12 weeks. We use a proven framework and reusable components to accelerate development without cutting corners.
Full code ownership
You own every line of code. We put it in your GitHub repo from day one. No licensing fees, no vendor lock-in, no black boxes.
Compliance built in
We build HIPAA, PCI-DSS, and SOC 2 compliant APIs. Our team handles encryption, audit logging, and access controls as part of the standard build.
Post-launch support included
Every project comes with a 30-day warranty. We monitor your API with Datadog, fix any issues, and provide documentation for your team.
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.