Expert Backend API Development AgencyAPI Development
We build production-grade APIs that scale. Fixed price, 8-12 week delivery, full code ownership.
IRPR is an expert backend API development agency. We build REST, GraphQL, and gRPC APIs using Node.js, Python, Go, and .NET. Every API is designed for high throughput, low latency, and easy integration.
Our backend API projects ship in 8-12 weeks with fixed pricing between $80K and $250K. We handle PCI-DSS for fintech, HIPAA for healthcare, and SOC 2 for SaaS clients. Source code and full documentation are yours from day one.
CTOs hire us to replace legacy monolithic backends with microservice APIs. Startup founders hire us to build the first production API for their SaaS product. Enterprise architects hire us to design and implement API gateways that connect 10+ internal systems.
Types of software we ship.
REST API Development
Build stateless RESTful APIs with Node.js or Python. Includes Swagger/OpenAPI docs, rate limiting, and JWT auth.
GraphQL API Development
Flexible GraphQL APIs using Apollo Server or Hasura. Single endpoint, typed schemas, real-time subscriptions.
Microservice API Architecture
Decoupled microservice APIs with Docker and Kubernetes. Each service scales independently. Uses RabbitMQ or Kafka for messaging.
Third-Party API Integration
Connect your app to Stripe, Salesforce, HubSpot, Twilio, or any REST/SOAP API. Handle rate limits, retries, and webhooks.
API Gateway & Proxy
Deploy an API gateway with Kong or AWS API Gateway. Centralized auth, logging, throttling, and version management.
Real-Time API (WebSocket)
Build real-time APIs with WebSockets or Server-Sent Events. Use for live dashboards, chat, and streaming data.
Internal API & B2B Integration
Design private APIs for internal tools and B2B partners. Includes OAuth 2.0, API keys, and usage analytics.
Legacy API Modernization
Migrate old SOAP or custom APIs to modern REST/GraphQL. Reduce response times by 60% and simplify maintenance.
We build for every business type.
SaaS & Platforms
Fintech & Finance
Healthcare & Life Sciences
Ecommerce & Retail
Logistics & Supply Chain
Why You Need an Expert Backend API Development Agency
A poorly designed API breaks integrations, slows down your team, and costs you customers.
IRPR has shipped over 200 backend APIs for clients in 50+ countries. We use Node.js, Python, Go, and .NET to build APIs that handle 10,000+ requests per second with 99.9% uptime. Every API includes automated testing, monitoring, and documentation.
Our team follows a strict 4-phase process: Idea (1 week), Roadmap (1 week), Product (8-12 weeks), Release (2 weeks). You get a fixed price after the Roadmap phase. No surprises, no hourly billing, no scope creep.
How IRPR Differs from Other API Agencies
Most agencies bill hourly, overpromise, and underdeliver. We do the opposite.
Generic dev shops start coding without a clear spec. They change scope constantly and bill you for every extra hour. Their APIs lack documentation, tests, and monitoring. You end up with a fragile system that breaks in production.
IRPR gives you a fixed price and a detailed roadmap before writing a single line of code. We use CI/CD pipelines, automated tests, and production monitoring from day one. Our APIs are built to scale and easy to maintain.
- Hourly billing with no cap
- No written roadmap before coding
- Minimal or no API documentation
- No automated tests or CI/CD
- No production monitoring setup
- Code ownership unclear
- Fixed price after Roadmap phase
- Detailed roadmap with endpoints, schemas, and timeline
- OpenAPI/Swagger docs auto-generated
- CI/CD with GitHub Actions, Jest, and Postman tests
- Sentry error tracking and Datadog monitoring
- Full source code ownership from day one
Our Process for Building Your API
We follow a repeatable 4-phase process that eliminates guesswork.
Every API project starts with a 1-week Idea phase where we understand your users, data, and integrations. Then we spend 1 week on the Roadmap: we define every endpoint, data model, auth flow, and deployment plan.
The Product phase takes 8-12 weeks. We build the API iteratively, shipping a working version every 2 weeks. You see progress, give feedback, and adjust. The Release phase includes load testing, security audit, and deployment to production.
What Ships with Every API Project
You get more than just code. Every deliverable is production-ready.
We treat our APIs as products, not side projects. Every API ships with automated tests, monitoring, and documentation. Your team can maintain and extend the API without us.
All source code is in your GitHub or GitLab repo from the first commit. You own everything. No licensing fees, no vendor lock-in.
- Source code in your git repository
- CI/CD pipeline on GitHub Actions or GitLab CI
- OpenAPI/Swagger documentation
- Postman collection with example requests
- Unit tests with 90%+ coverage (Jest, pytest, or Go test)
- Integration tests with database and external services
- Sentry error tracking and Datadog monitoring
- Docker Compose for local development
- Deployment scripts for AWS, GCP, or Azure
- Security audit report (OWASP top 10)
What we ship in this practice.
Payment Processing API for Fintech Startup
Built a REST API that processes 50,000+ transactions per month. Integrated with Stripe, Plaid, and a custom ledger. Reduced payment failure rate by 30%. Tech stack: Node.js, PostgreSQL, Redis, Stripe API.
Patient Data API for Telehealth Platform
Developed a HIPAA-compliant GraphQL API for patient records, appointments, and video sessions. Handles 10,000+ daily requests with 99.9% uptime. Tech stack: Apollo Server, PostgreSQL, AWS Lambda, Twilio.
Inventory Management API for Ecommerce Brand
Created a real-time REST API that syncs inventory across 3 warehouses and 2 sales channels (Shopify, Amazon). Reduced overselling by 95%. Tech stack: Python, Django, Redis, Celery, Shopify API.
Subscription Billing API for SaaS Platform
Built a billing API with usage-based pricing, invoicing, and dunning. Integrated with Stripe and QuickBooks. Reduced manual billing work by 20 hours/week. Tech stack: Node.js, MongoDB, Stripe API, Bull queue.
Real-Time Tracking API for Logistics Company
Developed a WebSocket API that streams GPS data from 500+ delivery vehicles. Drivers and customers see live updates. Reduced support calls by 40%. Tech stack: Go, Redis Pub/Sub, WebSockets, Google Maps API.
Course Content API for EdTech Platform
Created a FERPA-compliant REST API for course content, student progress, and quizzes. Serves 50,000+ active users. Tech stack: Ruby on Rails, PostgreSQL, AWS S3, CloudFront.
Why teams hire us.
Fixed price, not hourly
Every API project gets a fixed quote after the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges. You know the cost before we write code.
Senior engineers only
Our team averages 8+ years of backend development experience. Every engineer has built production APIs at scale. No junior developers, no offshore mismanagement.
Full code ownership
You own every line of code from day one. Source code is in your repository. No licensing fees, no proprietary frameworks, no vendor lock-in.
Built for compliance
We design APIs to meet HIPAA, PCI-DSS, SOC 2, and FERPA requirements. Includes encryption at rest and in transit, audit logs, and access controls.
Production monitoring included
Every API ships with Sentry error tracking and Datadog performance monitoring. We set up alerts for response time, error rate, and uptime before launch.
12-week delivery guarantee
Our process is designed for speed. Most APIs ship in 8-12 weeks. We have a 98% on-time delivery rate across 200+ projects.
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.