Professional Backend API Development ConsultantsAPI Development
We build production-grade APIs that handle millions of requests. Fixed price, 8-12 week delivery, full code ownership.
IRPR builds backend APIs for web apps, mobile apps, and microservices. We use Node.js, Python, Go, and Rust with PostgreSQL, Redis, and Kafka for high-throughput systems.
Every project ships in 8-12 weeks with a fixed price between $80K and $250K. We handle HIPAA, PCI-DSS, and SOC 2 compliance from day one.
CTOs hire us when their in-house team lacks API security expertise. Startup founders hire us to build their SaaS backend. Enterprise architects hire us to replace legacy SOAP APIs with REST or GraphQL.
Types of software we ship.
REST API development
Stateless HTTP APIs with JSON payloads. We use Express.js, FastAPI, or Spring Boot depending on your stack.
GraphQL API development
Single endpoint with flexible queries. Built with Apollo Server, Hasura, or Yoga for real-time data fetching.
gRPC API development
High-performance binary APIs for internal microservices. We use Protocol Buffers with Go or C++ backends.
WebSocket API development
Real-time bidirectional communication for chat, live dashboards, and gaming. Built with Socket.IO or ws library.
Microservices API gateway
Centralized entry point for multiple services. We configure Kong, NGINX, or AWS API Gateway with rate limiting.
Third-party API integration
Connect your app to Stripe, Salesforce, HubSpot, or Slack. We handle OAuth, webhooks, and error retries.
Internal API development
Private APIs for your own frontend apps and internal tools. We use JWT authentication and role-based access.
API documentation and testing
Auto-generated docs with Swagger/OpenAPI. We write integration tests with Postman, Jest, and Supertest.
We build for every business type.
SaaS platforms
Healthcare
Fintech
Ecommerce
Enterprise
Why hire professional backend API development consultants
Building a production API requires more than writing endpoints.
A poorly designed API leads to slow frontends, broken integrations, and security holes. IRPR's consultants have shipped 200+ APIs for companies in healthcare, fintech, and SaaS. We use OpenAPI specs, automated testing, and CI/CD pipelines to deliver reliable backends.
Our team includes senior engineers who have built APIs handling 10,000 requests per second. We design for scalability from day one, using caching layers like Redis and CDN-backed static assets. Every API ships with monitoring via Datadog or New Relic.
Generic dev shop vs IRPR
Not all API consultants deliver the same quality.
Many agencies treat API development as an afterthought. They write endpoints without documentation, skip error handling, and ignore rate limiting. The result is a backend that breaks under load and costs more to maintain.
IRPR treats your API as the core product. We write OpenAPI specs before writing code. Every endpoint has input validation, structured error responses, and automated tests. We ship with a Postman collection and a deployment guide.
- No API spec before coding
- No rate limiting or throttling
- No automated tests for endpoints
- No monitoring or alerting
- No documentation after delivery
- Hourly billing with scope creep
- OpenAPI spec approved before coding
- Rate limiting with Redis or Kong
- 100% endpoint test coverage with Jest
- Datadog monitoring and PagerDuty alerts
- Swagger docs and Postman collection
- Fixed price from Roadmap phase
Our API development process
We follow a 4-phase process that guarantees delivery.
Phase 1 is the Idea phase where we map your data model and API endpoints. Phase 2 is the Roadmap where we write the OpenAPI spec and set the fixed price. Phase 3 is Product where we build and test every endpoint. Phase 4 is Release where we deploy and monitor.
Each phase has clear deliverables. You see progress every week. No surprises, no delays.
What ships with every API project
Every API project includes these deliverables by default.
You own everything. Source code, documentation, deployment scripts, and monitoring dashboards. No black boxes, no locked-in dependencies.
We also provide a 30-day post-launch support window. If something breaks, we fix it within 4 hours.
- Source code in your GitHub or GitLab repo
- OpenAPI 3.0 specification document
- CI/CD pipeline with GitHub Actions or GitLab CI
- Automated test suite with Jest and Supertest
- Postman collection with example requests
- Docker Compose setup for local development
- Deployment guide with environment variables
- Datadog or New Relic monitoring dashboard
- PagerDuty alerting for 5xx errors
- Rate limiting configuration with Redis
What we ship in this practice.
SaaS backend for a CRM platform
Built a REST API with Node.js, PostgreSQL, and Redis. Handles 5,000 requests per second with 99.9% uptime. Reduced customer onboarding time from 2 weeks to 3 days.
HIPAA-compliant API for a telemedicine app
Developed a GraphQL API with Apollo Server and PostgreSQL. Encrypted all PHI at rest and in transit. Passed HIPAA audit on first attempt.
Payment processing API for a fintech startup
Built a PCI-DSS compliant REST API with Stripe integration. Handles 10,000 transactions per day. Reduced payment failure rate from 5% to 0.5%.
Inventory management API for an ecommerce brand
Created a WebSocket API for real-time inventory sync across 3 warehouses. Built with Python FastAPI and Redis Pub/Sub. Cut inventory errors by 90%.
Microservices API gateway for a logistics company
Deployed Kong API Gateway with rate limiting and OAuth2. Connected 12 microservices handling shipment tracking, billing, and customer notifications. Reduced API latency by 40%.
Internal API for a real estate MLS platform
Built a gRPC API with Go and Protocol Buffers for property data. Integrated with 5 MLS providers. Reduced data sync time from 4 hours to 15 minutes.
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. You know the cost before we write a line of code.
Senior engineers only
Our team averages 10+ years of backend experience. Every engineer has shipped production APIs for companies like Stripe, Uber, and Salesforce. No junior developers, no offshore outsourcing.
Full code ownership
You own every line of code we write. No licensing fees, no platform lock-in, no recurring royalties. The source code is in your repo from day one.
Compliance built in
We design APIs to meet HIPAA, PCI-DSS, and SOC 2 requirements from the start. Encryption, audit logs, and access controls are part of every project, not an afterthought.
8-12 week delivery
We ship production-ready APIs in 8-12 weeks. Our process eliminates scope creep and keeps the team focused on what matters. 98% of our projects deliver on time.
Post-launch support
Every project includes 30 days of post-launch support with a 4-hour response SLA. We monitor your API and fix issues before they affect your users.
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.