Senior Backend API Development CompanyAPI Development
We build production-grade APIs for fintech, healthcare, and SaaS. 12-week delivery, fixed pricing, and senior engineers only.
IRPR builds RESTful, GraphQL, and gRPC APIs for high-traffic applications. Our senior engineers use Go, Node.js, Python, and .NET on AWS, GCP, or Azure.
Every project ships with CI/CD pipelines, Postman collections, and full API documentation. Timeline: 12-14 weeks. Price range: $80K-$250K. We handle HIPAA, PCI-DSS, and SOC 2 compliance out of the box.
CTOs at Series A startups need a scalable payment API. CIOs at healthcare networks need a FHIR-compliant data exchange. Engineering directors at SaaS companies migrate from monolithic to microservices. Product managers at ecommerce brands integrate multiple fulfillment APIs. These are the teams that hire IRPR.
Types of software we ship.
Payment Gateway API
Stripe or Adyen integration with idempotency, webhooks, and 99.99% uptime for high-volume transactions.
RESTful API for Mobile Backend
User authentication, CRUD operations, and push notifications for iOS/Android apps with JWT and OAuth.
GraphQL API for Ecommerce
Unified product catalog, inventory, and order data for headless commerce using Apollo and Redis.
gRPC API for Microservices
Low-latency inter-service communication with protocol buffers and streaming for real-time systems.
Third-Party API Integration Hub
Single gateway for Salesforce, HubSpot, Slack, and 50+ external APIs with rate limiting and caching.
Real-Time Data API (WebSockets)
Live dashboards, chat, and collaborative features with Socket.io or AWS AppSync and persistent connections.
Internal API Gateway
Authentication, rate limiting, routing, and logging for a suite of internal microservices with Kong or Envoy.
Open API (Public API)
Developer portal with OAuth 2.0, API keys, usage analytics, and versioning for third-party integrations.
We build for every business type.
Financial services
Healthcare & life sciences
SaaS platforms
Ecommerce & retail
Logistics & transportation
What Senior Backend API Development Delivers
Our team has shipped over 200 API-driven products for clients in 50 countries.
Each project uses the same proven approach: senior engineers, modern tech stacks, and a fixed timeline. We have built APIs that handle millions of requests per day for fintech, healthcare, and SaaS companies.
You get more than code. You get a fully documented, tested, and deployed API with monitoring, logging, and a post-launch support period. No cut corners, no skipped steps.
Generic Dev Shop vs Senior API Engineers
Most API projects fail because developers lack experience with production-scale systems.
A generic dev shop assigns junior developers who have never built a high-traffic API. They skip documentation, ignore security, and bill by the hour. Your project bleeds time and money.
IRPR assigns senior engineers with 10+ years of experience. We write documentation first, automate testing, and deliver a fixed price. Our APIs go live with confidence.
- Junior devs with 2 years experience
- No API documentation
- No CI/CD pipeline
- No security review
- Hourly billing with scope creep
- Code abandoned after delivery
- Senior engineers with 10+ years
- OpenAPI/Swagger docs generated
- Automated CI/CD pipelines
- Security audit (OWASP top 10)
- Fixed price, no surprises
- Handover with full ownership
Our API Development Process in 4 Phases
We follow a repeatable 4-phase process to deliver production-ready APIs in 12 weeks.
Our process ensures you see progress every week, not just at the end. Each phase has clear deliverables and a go/no-go decision point.
What Ships with Every API Project
Every project includes these 10 deliverables by default.
No hidden costs or extra fees. You get everything you need to run and maintain your API.
- Source code in your private GitHub repo
- CI/CD pipeline (GitHub Actions or GitLab CI)
- API documentation (OpenAPI/Swagger)
- Postman collection with test examples
- Database schema and migration scripts
- Authentication (OAuth 2.0, API keys)
- Monitoring and logging (Sentry, Datadog)
- Load test reports
- Deployment playbook
- 30-day post-launch support
What we ship in this practice.
Payment API for Fintech Startup
Built a PCI-DSS compliant payment API with Stripe Connect. Reduced settlement time from 3 days to real-time. Used Go, PostgreSQL, and AWS ECS.
Healthcare Data Exchange API
Developed a FHIR-compliant API for a telemedicine platform. Integrated with Epic and Cerner, handling 10,000+ patient records daily. Used Node.js, MongoDB, and Azure.
Ecommerce API Gateway
Unified catalog, inventory, and order APIs for a headless commerce brand. Cut order processing time by 60%. Used GraphQL, Redis, and Google Cloud Run.
Real-Time Tracking API
Built a WebSocket-based API for a logistics company. Tracked 500+ vehicles in real-time with 99.9% uptime. Used Node.js, Socket.io, and Redis.
SaaS Integration Hub API
Created a centralized API to integrate with Salesforce, HubSpot, and Slack. Reduced manual data entry by 8 hours/week. Used Python, PostgreSQL, and AWS Lambda.
Public API for a Data Platform
Designed and documented a public REST API with rate limiting and OAuth 2.0. Achieved 10,000+ developer signups in first month. Used .NET Core, SQL Server, and Azure API Management.
Why teams hire us.
Fixed Price, Not Hourly
Every project gets a fixed quote in the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges.
Senior Engineers Only
All engineers have 10+ years of experience. No junior devs, no offshore teams, no handoffs between middlemen.
12-Week Delivery
We deliver production-ready APIs in 12 weeks on average. 98% of our projects ship on time, every time.
Compliance Built In
We handle HIPAA, PCI-DSS, and SOC 2 from day one. No expensive rework later because a security audit revealed gaps.
Full Code Ownership
You own all source code, documentation, and deployment scripts. No licensing fees, no vendor lock-in.
Post-Launch Support
We include 30 days of support after deployment. You can extend with a monthly retainer starting at $5K/month.
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.