Best Backend API Development VendorAPI Development
We build production-grade APIs that handle millions of requests. Fixed price, 8-12 week delivery, full code ownership.
IRPR is the best backend API development vendor for companies that need reliable, scalable APIs. We use Node.js, Python, Go, and Rust to build REST, GraphQL, and gRPC endpoints that integrate with any frontend or third-party service.
Every project ships in 8-12 weeks with a fixed price between $80K and $250K. We handle compliance for HIPAA, PCI-DSS, and SOC 2. You get full source code, CI/CD pipelines, and API documentation in your own repository.
CTOs hire us when their in-house team lacks API expertise. Startup founders hire us to build their SaaS MVP. Enterprise product managers hire us to replace legacy monolithic backends with microservices. We work async-first with daily overlap in US time zones.
Types of software we ship.
REST API Development
Build stateless RESTful APIs with Express.js or FastAPI. Includes OpenAPI 3.0 specs and Postman collections.
GraphQL API Development
Create flexible GraphQL APIs with Apollo Server or Hasura. Supports real-time subscriptions and schema stitching.
gRPC API Development
High-performance gRPC APIs using Protocol Buffers. Ideal for microservices communication and low-latency systems.
Microservices API Gateway
Deploy API gateways with Kong or NGINX. Handles rate limiting, authentication, and service discovery.
Third-Party API Integration
Connect your app to Stripe, Salesforce, HubSpot, or Twilio. Includes error handling and retry logic.
Webhook System Development
Build reliable webhook delivery systems with retries, idempotency keys, and event logging using Redis or RabbitMQ.
Real-Time API with WebSockets
Implement real-time features using Socket.IO or WebSocket API. Supports chat, live updates, and collaborative editing.
API Security & Auth Layer
Add OAuth 2.0, JWT, or SAML authentication. Includes rate limiting, input validation, and SQL injection prevention.
We build for every business type.
SaaS companies
Healthcare
Fintech
Ecommerce
Real Estate
Why IRPR is the Best Backend API Development Vendor
We have shipped over 200 backend APIs for clients in 50+ countries.
Our engineers average 10+ years of experience building APIs for high-traffic applications. We use Node.js, Python, Go, and Rust to deliver APIs that handle 10,000+ requests per second. Every API includes automated testing with Jest or Pytest and monitoring with Datadog or New Relic.
We follow a strict 4-phase process: Idea (week 1), Roadmap (week 2), Product (weeks 3-10), Release (weeks 11-12). You get a fixed price quote in the Roadmap phase. No surprises. No scope creep.
Generic Dev Shop vs IRPR
Not all API vendors deliver the same quality. Here is the difference.
Generic dev shops often use junior developers, charge hourly, and deliver undocumented APIs. They skip load testing and security audits. You end up with technical debt and surprise invoices.
IRPR assigns senior engineers only. We write OpenAPI specs before writing code. Every API gets load tested with k6 and security scanned with OWASP ZAP. You own the code from day one.
- Junior developers with 2 years experience
- Hourly billing with no cap
- No API documentation
- No load testing
- No security audit
- Code owned by the agency
- Senior engineers with 10+ years experience
- Fixed price from Roadmap phase
- OpenAPI 3.0 specs included
- Load tested with k6 at 10K RPS
- OWASP ZAP security scan
- Full code ownership in your repo
Our 4-Phase API Development Process
We follow a repeatable process that delivers production-ready APIs in 8-12 weeks.
Phase 1: Idea. We map your requirements, user flows, and data models. You get a product brief with wireframes and API endpoints defined.
Phase 2: Roadmap. We create a detailed technical specification with database schema, API routes, and deployment architecture. You get a fixed price quote.
What Ships with Every API Project
Every backend API project includes these deliverables by default.
No hidden extras. Everything listed here is included in the fixed price.
- Source code in your GitHub or GitLab repo
- CI/CD pipeline with GitHub Actions or GitLab CI
- OpenAPI 3.0 specification
- Postman collection with example requests
- Automated test suite (unit + integration + e2e)
- Load test results from k6
- Security scan report from OWASP ZAP
- Deployment to AWS, GCP, or Azure
- Monitoring with Datadog or New Relic
- Admin dashboard with API usage metrics
What we ship in this practice.
SaaS Subscription Management API
Built a multi-tenant API for a B2B SaaS platform handling 50,000 users. Used Node.js, PostgreSQL, and Stripe. Reduced billing errors by 95% and cut customer support tickets by 40%.
HIPAA-Compliant Patient Data API
Developed a FHIR-compliant API for a telehealth startup. Used Python, FastAPI, and AWS HealthLake. Achieved HIPAA compliance in 10 weeks and passed third-party audit on first attempt.
PCI-DSS Payment Processing API
Created a tokenized payment API for an ecommerce platform. Used Go, Stripe Connect, and AWS KMS. Processed $2M in transactions in the first month with zero security incidents.
Real-Time Inventory Sync API
Built a WebSocket-based inventory API for a retail chain with 200 stores. Used Node.js, Redis, and RabbitMQ. Reduced inventory discrepancies from 8% to 0.5%.
MLS Data Integration API
Developed a REST API that aggregates MLS data from 50+ sources. Used Python, PostgreSQL, and Elasticsearch. Cut data refresh time from 24 hours to 15 minutes.
Real-Time Analytics Pipeline API
Built a streaming analytics API for a media company. Used Go, Apache Kafka, and ClickHouse. Handled 1 million events per second with 99.9% uptime.
Why teams hire us.
Senior Engineers Only
Every engineer on your project has 10+ years of experience. No junior developers. No offshore teams. You work directly with the people building your API.
Fixed Price, Not Hourly
You get a fixed price quote in the Roadmap phase (week 2). No hourly billing. No surprise invoices. No scope creep charges. The price you see is the price you pay.
8-12 Week Delivery
We ship production-ready APIs in 8-12 weeks. Our process is optimized for speed without sacrificing quality. 98% of our projects deliver on time.
Full Code Ownership
You own all source code from day one. We put everything in your repository. No licensing fees. No vendor lock-in. You can take the code and run it yourself.
Compliance Built In
We build HIPAA, PCI-DSS, and SOC 2 compliant APIs. Our engineers know the compliance requirements and bake them into the architecture from the start.
Production-Grade Monitoring
Every API ships with Datadog or New Relic monitoring, Sentry error tracking, and PagerDuty alerts. You get real-time visibility into performance and errors.
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.