Professional Backend API Development VendorBackend API
We build production-grade backend APIs that power your apps. 12 week delivery, fixed price, full ownership.
IRPR is a professional backend API development vendor. We build custom APIs using Node.js, Python (Django, FastAPI), Go, and .NET. Every API includes authentication, rate limiting, and monitoring out of the box.
We ship a working API in 8-12 weeks. Pricing is fixed and starts at $80K, going up to $250K for complex enterprise integrations. All projects include compliance support for HIPAA, PCI-DSS, or SOC 2 as needed.
Our clients include CTOs scaling SaaS platforms, founders launching marketplaces, and engineering leads migrating from monoliths to microservices. They hire us when they need a reliable, scalable backend built by senior engineers.
Types of software we ship.
REST API development
Stateless HTTP APIs using Express.js or Django REST Framework. Includes Swagger/OpenAPI docs and Postman collections.
GraphQL API development
Flexible query APIs built with Apollo Server or Hasura. Supports subscriptions, batching, and schema stitching.
Microservices API gateway
API gateway with Kong or NGINX Plus. Manages routing, authentication, and rate limiting across distributed services.
Real-time API (WebSocket)
WebSocket and Server-Sent Events APIs using Socket.io or AWS API Gateway WebSockets. For live dashboards and chat.
Third-party API integration
Integrate with Stripe, Twilio, Salesforce, HubSpot, or any REST/SOAP API. Includes error handling and retry logic.
Internal backend API
Private APIs for internal systems using gRPC or JSON-RPC. Built for low latency and high throughput within a VPN.
API for mobile apps
Backend APIs optimized for mobile with Firebase Cloud Functions or AWS AppSync. Supports offline sync and push notifications.
Enterprise API (B2B)
B2B APIs with OAuth 2.0, API keys, and usage analytics. Built for ISVs and platform companies.
We build for every business type.
Healthcare
Fintech
Ecommerce
SaaS
Media & Logistics
Why you need a professional backend API development vendor
Your API is the backbone of your product. A poorly designed backend causes delays, security gaps, and expensive rework.
We have built over 200 backend APIs for clients in 50 countries. Each one uses proper error handling, input validation, and automated tests. We write 95% test coverage on all critical endpoints.
A professional vendor ensures your API can scale from 100 to 10 million requests. We use horizontal scaling with Docker and Kubernetes. Our APIs run on AWS, GCP, or Azure with auto-scaling groups.
The difference between a freelancer and a professional backend API development vendor
Many teams start with a freelancer and later face scalability issues, tech debt, or unmaintainable code. IRPR avoids those problems.
Freelancers often work alone, have limited availability, and may not document code. IRPR assigns a team of senior engineers, architects, and QA. Every API ships with complete documentation and a CI/CD pipeline.
A professional vendor also handles security from day one. We implement OWASP top 10 protections, SQL injection prevention, and encrypted data storage. Freelancers often skip these steps to save time.
- No fixed timeline or price
- Single developer with limited capacity
- Minimal or no documentation
- No load testing before launch
- Basic authentication only
- You own nothing until full payment
- Fixed price quoted in week 2
- Team of 3-5 senior engineers
- Full API docs (Swagger + Postman)
- Load testing with k6 and Artillery
- OAuth 2.0, JWT, API keys included
- Source code in your repo from day 1
Our process for building your backend API
We follow a 4-phase process: Idea, Roadmap, Product, Release. Each phase has clear deliverables and milestones.
Phase 1 (Idea) takes 1 week. We map your business logic to API endpoints, define data models, and choose the right tech stack. You approve the plan before any code is written.
Phase 2 (Roadmap) is week 2. We create a detailed quote with fixed pricing and a 12-week timeline. Every endpoint, integration, and compliance requirement is accounted for.
What ships when you hire a professional backend API development vendor
You get more than code. Every project includes these deliverables by default.
We believe in full transparency. All deliverables are included in the fixed price. No surprise fees for documentation, testing, or deployment scripts.
- Source code in your private GitHub/GitLab repo
- CI/CD pipeline with GitHub Actions or GitLab CI
- API documentation (Swagger/OpenAPI and Postman collection)
- 100+ automated tests (unit, integration, e2e)
- Load test results with 10,000 concurrent requests
- Monitoring dashboard (Datadog or New Relic)
- Error tracking with Sentry
- Security audit report (OWASP Top 10 checked)
- Deployment scripts for AWS ECS or Kubernetes
- Post-launch support for 30 days
What we ship in this practice.
Patient portal API for a telehealth startup
Built a HIPAA-compliant REST API for appointment scheduling, video calls, and EHR integration. Used FastAPI, PostgreSQL, and Twilio Video. Reduced manual data entry by 12 hours per week.
Payment orchestration API for a fintech platform
Developed a GraphQL API that routes payments to Stripe, PayPal, and Plaid. Included fraud detection with Sift. Handles 500K+ transactions per month with 99.99% uptime.
Product catalog API for a D2C ecommerce brand
Created a REST API for product management, inventory sync, and order fulfillment via Shopify. Used Node.js, Redis caching, and Cloudflare CDN. Cut page load time by 60%.
Multi-tenant API for a SaaS analytics platform
Designed a microservices API with Kong gateway and PostgreSQL. Each tenant gets isolated schemas. Achieved 2x faster reporting queries using materialized views.
Real-time tracking API for a logistics company
Built WebSocket API for vehicle tracking and delivery status updates. Used AWS IoT Core and DynamoDB. Reduced customer support calls by 40% with live tracking.
Content moderation API for a social media platform
Developed a REST API using Go and Google Cloud Vision for image and text moderation. Handles 10 million requests daily with 98% accuracy in flagging harmful content.
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 the first line of code.
Senior engineers only
Our team consists of engineers with 8+ years of experience. No junior developers, no offshore confusion. Every API is architected by someone who has shipped production systems serving millions of users.
Production-ready from day one
We include CI/CD, monitoring, error tracking, and load testing in every project. Your API is ready for production traffic after the first sprint, not after months of bug fixes.
Full ownership of code
You own all source code, documentation, and infrastructure scripts. We host nothing on our side. You can deploy, modify, or extend the API without ever needing us again.
Compliance built in
We build HIPAA, PCI-DSS, and SOC 2 compliant APIs by default. Our engineers implement encryption at rest and in transit, audit logging, and access controls from the first sprint.
Transparent communication
You get a Slack channel with the entire team, a weekly demo video, and a live project dashboard. No black boxes. You see progress every 2 weeks and can pivot at any milestone.
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.