Top Backend API Development ServicesAPI Development
We build production-grade APIs for your product. Get a working API in 8-12 weeks with fixed pricing.
IRPR builds backend APIs for companies that need reliable, scalable data exchange. We use Node.js, Python, Go, and Postgres to create REST and GraphQL APIs that handle millions of requests per day.
Every project ships with a fully documented API, automated tests, and a CI/CD pipeline. Timeline is 8-12 weeks for an MVP. Fixed pricing starts at $80K and goes to $250K depending on complexity. We comply with HIPAA, PCI-DSS, and SOC 2.
CTOs hire us when their in-house team is at capacity. Startup founders hire us to build their first production API. Product managers hire us to integrate third-party services like Stripe, Salesforce, and Twilio.
Types of software we ship.
REST API Development
Stateless, cacheable REST APIs using Express.js or FastAPI. Includes OpenAPI documentation, rate limiting, and JWT auth.
GraphQL API Development
Flexible GraphQL APIs with Apollo Server or Yoga. Supports real-time subscriptions and efficient data fetching.
Microservices API Architecture
Decoupled microservices communicating via gRPC or message queues. Each service has its own database and deployment pipeline.
API Integration Services
Connect your app to Stripe, Twilio, Salesforce, HubSpot, or custom third-party APIs. Includes mapping, error handling, and retry logic.
Real-Time API Development
WebSocket and Server-Sent Events APIs for live dashboards, chat, and notifications. Built with Socket.io or Pusher.
API Security and Compliance
APIs with OAuth 2.0, API keys, rate limiting, and input validation. Compliant with HIPAA, PCI-DSS, and SOC 2 requirements.
API Documentation and Testing
Auto-generated docs using Swagger/OpenAPI or Postman. Includes integration tests, load tests with k6, and a test suite.
Legacy API Modernization
Migrate SOAP or legacy REST APIs to modern REST or GraphQL. Includes data migration, versioning, and backward compatibility.
We build for every business type.
Healthcare
Fintech
Ecommerce
SaaS
Logistics
Why top backend API development services matter
A well-designed API is the backbone of every modern web and mobile application.
Poorly built APIs cause slow load times, data errors, and security vulnerabilities. IRPR has shipped 200+ APIs across 50+ countries. Our APIs handle up to 10,000 requests per second with 99.9% uptime.
We use a strict design-first approach. Every API starts with an OpenAPI specification reviewed by your team. This eliminates guesswork and ensures the final product matches your requirements exactly.
Generic dev shop vs IRPR
Most dev shops build APIs that break under load. IRPR builds APIs that scale from day one.
Generic shops often skip load testing and documentation. They use boilerplate code that doesn't match your business logic. You end up with an API that works in demo but fails in production.
IRPR treats every API as a product. We write integration tests, set up monitoring with Datadog, and provide a Postman collection. Your API ships with documentation that your frontend team can use immediately.
- No API specification before coding
- No load testing
- No documentation or outdated docs
- No monitoring or alerting
- No CI/CD pipeline for API
- No rate limiting or security checks
- OpenAPI spec approved before coding
- Load test with k6 at 10K req/s
- Auto-generated Swagger docs
- Datadog monitoring with alerts
- GitHub Actions CI/CD pipeline
- OAuth 2.0, rate limiting, input validation
Our API development process in 4 phases
We follow a structured 4-phase process to deliver your API on time and on budget.
Phase 1 defines the API contract. Phase 2 builds the core endpoints. Phase 3 adds integrations and security. Phase 4 deploys with full documentation.
Each phase ends with a review. You see working code every 2 weeks. No black box, no surprises.
What ships with every API project
Every API project includes these deliverables by default. No hidden add-ons.
You get source code, documentation, and deployment scripts. Everything is in your repository from day one.
- Source code in your GitHub repo
- OpenAPI / Swagger documentation
- Postman collection with examples
- CI/CD pipeline on GitHub Actions
- Docker container for local development
- Load test report (k6)
- Sentry error tracking
- Datadog monitoring dashboard
- Rate limiting and API key management
- Deployment to AWS ECS or GCP Cloud Run
What we ship in this practice.
Healthcare patient data API
Built a HIPAA-compliant API for a telemedicine startup. The API handles 50,000 patient records and integrates with Epic EHR. Reduced data retrieval time from 8 seconds to 200ms. Tech stack: Node.js, PostgreSQL, Redis, FastAPI.
Fintech payment processing API
Developed a PCI-DSS compliant payment API for a lending platform. Processes 10,000 transactions per day with 99.99% uptime. Integrated with Plaid for bank verification and Stripe for payments. Tech stack: Go, PostgreSQL, Stripe, Plaid.
Ecommerce product catalog API
Built a GraphQL API for a multi-brand ecommerce platform. The API serves product data to web and mobile apps with sub-100ms response times. Supports inventory sync across 3 warehouses. Tech stack: Apollo Server, MongoDB, Redis, Elasticsearch.
SaaS subscription billing API
Created a REST API for a SaaS company that manages 5,000 subscribers. Automates invoicing, proration, and dunning emails. Reduced billing errors by 95%. Tech stack: Node.js, PostgreSQL, Stripe, SendGrid.
Real-time logistics tracking API
Built a WebSocket-based API for a logistics company to track 2,000 delivery vehicles in real time. Updates arrive every 2 seconds. Reduced customer support calls by 40%. Tech stack: Socket.io, Redis, PostgreSQL, Google Maps API.
Media content delivery API
Developed a REST API for a media platform serving 1 million video streams per month. Includes transcoding triggers, CDN integration, and analytics. Reduced video start time by 60%. Tech stack: Python, Django, AWS S3, CloudFront, Elastic Transcoder.
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 exact cost before we write a line of code.
API-first design process
We write the OpenAPI specification before any backend code. Your team reviews and approves the spec. This eliminates rework and ensures the API matches your frontend requirements exactly.
Compliance built in
We build HIPAA, PCI-DSS, and SOC 2 compliant APIs by default. Our team has completed 40+ compliance audits. We handle PHI, PII, and payment data securely from day one.
Production monitoring included
Every API ships with Datadog monitoring, Sentry error tracking, and uptime alerts. You get a dashboard showing request volume, latency, error rates, and 99.9% uptime SLA.
Documentation that your team can use
We deliver Swagger/OpenAPI docs and a Postman collection with every API. Your frontend and mobile teams can start integrating immediately. No waiting for internal knowledge transfer.
8-12 week delivery guarantee
We have shipped 200+ APIs on time. Our process is optimized for speed without cutting corners. If we miss the deadline, we discount the final invoice by 10% per week late.
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.