Senior Backend API Development ServicesAPI Development
We build production-grade APIs with senior engineers only. Get a scalable backend in 8-12 weeks with fixed pricing.
IRPR builds senior backend API development services for companies that need reliable, scalable APIs. We use Node.js, Python, Go, and Java with PostgreSQL, Redis, and Kafka to handle millions of requests per day.
Every project ships with a complete API, CI/CD pipeline, and monitoring in 8-12 weeks. Pricing is fixed from $80K to $250K depending on scope. We comply with HIPAA, PCI-DSS, and SOC 2 standards.
CTOs hire us when their in-house team lacks senior API talent. Startup founders need a production-ready backend before funding. Enterprise teams outsource API development to meet compliance deadlines. Product managers want a scalable API that won't break at 10K users.
Types of software we ship.
REST API Development
Build stateless RESTful APIs with OpenAPI specs. Use Express.js, FastAPI, or Spring Boot for CRUD operations and third-party integrations.
GraphQL API Development
Design GraphQL schemas with Apollo Server or Hasura. Enable frontend teams to query exactly what they need, reducing over-fetching by 40%.
Microservices API Development
Decompose monoliths into microservices with Docker and Kubernetes. Each service has its own database and API gateway for independent scaling.
Third-Party API Integration
Connect your app to Stripe, Salesforce, HubSpot, or Twilio. We handle OAuth, webhooks, rate limiting, and error retry logic.
Real-Time API Development
Build WebSocket and Server-Sent Events APIs for live dashboards, chat, and notifications. Use Socket.io or AWS AppSync for sub-100ms latency.
API Gateway and Management
Deploy API gateways with Kong or AWS API Gateway. Add rate limiting, authentication, caching, and logging in one layer.
Internal API Development
Create private APIs for internal microservices and legacy system integration. Use gRPC for high-throughput service-to-service communication.
API Security and Compliance
Implement OAuth 2.0, JWT, and API key authentication. Add encryption, audit logs, and compliance checks for HIPAA or PCI-DSS.
We build for every business type.
Healthcare
Fintech
SaaS
Ecommerce
Enterprise
Why Senior Backend API Development Services Matter
A poorly designed API costs you time, money, and customers. Senior engineers build APIs that scale from day one.
Junior developers often create APIs that break under load, lack proper error handling, or expose security vulnerabilities. IRPR assigns senior engineers with 10+ years of experience to every project. They design APIs with pagination, rate limiting, idempotency, and proper HTTP status codes from the start.
We have shipped 200+ APIs across 50 countries. Our APIs handle 10,000 requests per second on average. Every API includes automated tests, monitoring with Datadog, and a deployment pipeline on GitHub Actions.
Generic Dev Shop vs IRPR Senior Backend API Development
Not all development teams deliver the same quality. Here is how IRPR differs from a generic dev shop.
Generic dev shops assign junior developers who learn on your dime. They write monolithic code, skip tests, and deliver late. IRPR assigns senior engineers who have built APIs for healthcare, fintech, and SaaS companies.
We use a fixed-price model with a Roadmap phase. You know the cost and timeline before we write a line of code. No hourly billing, no scope creep, no surprises.
- Junior developers with 1-2 years experience
- Hourly billing with no cap
- No API documentation or OpenAPI spec
- No automated tests or CI/CD
- No monitoring or error tracking
- Code ownership unclear
- Senior engineers with 10+ years experience
- Fixed price from $80K to $250K
- OpenAPI 3.0 spec generated automatically
- 100% test coverage and GitHub Actions CI/CD
- Datadog monitoring and Sentry error tracking
- Full code ownership transferred to you
Our Senior Backend API Development Process
We follow a 4-phase process that delivers a production-ready API in 8-12 weeks.
Every project starts with a Roadmap phase where we define the API contract, data model, and infrastructure. You approve the plan before we build. No guesswork.
We build in 2-week sprints with demos at the end of each sprint. You see working code every 14 days. Changes are easy because we use feature flags and continuous deployment.
What Ships With Every Senior Backend API Development Project
You get more than just code. Every project includes these deliverables by default.
We believe in full transparency. You own everything we build. No black boxes, no hidden fees.
Every deliverable is documented and tested. Your team can take over immediately or we can continue to support.
- Source code in your private GitHub repository
- OpenAPI 3.0 specification with Swagger UI
- CI/CD pipeline on GitHub Actions with automated tests
- Docker containers for local development and production
- Database schema with migrations (PostgreSQL or MongoDB)
- Authentication and authorization (OAuth 2.0, JWT, API keys)
- Monitoring dashboard on Datadog with alerts
- Error tracking with Sentry
- Deployment runbook and architecture diagram
- 30 days of post-launch support and bug fixes
What we ship in this practice.
Telemedicine API for a Healthcare Startup
Built a HIPAA-compliant REST API for video consultations, patient records, and billing. Used Node.js, PostgreSQL, and Twilio Video. Reduced patient wait time by 60% and handled 5,000 concurrent calls.
Payment Processing API for a Fintech Company
Developed a PCI-DSS compliant API for card payments, ACH transfers, and fraud detection. Used Python, FastAPI, and Stripe. Processed $50M in transactions in the first quarter with 99.99% uptime.
Multi-Tenant API for a SaaS Platform
Designed a GraphQL API with row-level security for a B2B SaaS product. Used Apollo Server, PostgreSQL, and Redis. Supported 200 tenants with zero downtime during deployments.
Inventory Sync API for an Ecommerce Brand
Built a real-time inventory API that syncs across Shopify, Amazon, and a warehouse system. Used Go, RabbitMQ, and MongoDB. Reduced overselling by 95% and cut sync latency from 5 minutes to 2 seconds.
CRM Integration API for a Real Estate Firm
Created a REST API to sync MLS listings with Salesforce and a custom CRM. Used Java, Spring Boot, and Kafka. Eliminated manual data entry for 50 agents, saving 8 hours per week each.
Analytics Data API for a Media Company
Developed a high-throughput API for ingesting and querying user engagement data. Used Python, ClickHouse, and Kafka. Handled 1 million events per second and powered real-time dashboards for 100 editors.
Why teams hire us.
Senior Engineers Only, No Juniors
Every engineer on your project has 10+ years of experience building APIs. We do not staff juniors or offshore teams. You get a lead engineer who has shipped production APIs for companies like yours.
Fixed Price, Not Hourly
You get a fixed quote after the Roadmap phase. No hourly billing, no surprise invoices. The price covers the entire project from design to deployment.
8-12 Week Delivery
We ship a production-ready API in 8-12 weeks. Our process is optimized for speed without cutting corners. 98% of our projects deliver on time.
Full Code Ownership
You own all the code, documentation, and infrastructure. No licensing fees, no vendor lock-in. We transfer everything to your GitHub account at the end of the project.
Compliance Built In
We build APIs that comply with HIPAA, PCI-DSS, and SOC 2. Our engineers know the security requirements for healthcare, fintech, and enterprise. No retrofitting compliance later.
Post-Launch Support Included
Every project includes 30 days of post-launch support. We fix bugs, answer questions, and help your team take over. After that, we offer ongoing maintenance at a fixed monthly rate.
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.