Senior Backend API Development VendorDevelopment Vendor
We build production-grade backend APIs for high-traffic applications. Fixed price, senior engineers, and 12-week delivery.
IRPR is a senior backend API development vendor that builds production-grade APIs for web and mobile applications. We deploy RESTful and GraphQL APIs using Node.js, Go, Python, and AWS Lambda to handle millions of requests per day.
Each project ships with a complete API gateway, authentication using Auth0 or Firebase, database migrations with Prisma or Drizzle, and CI/CD pipelines on GitHub Actions. Typical timeline is 12-14 weeks with fixed pricing from $80K to $250K. We comply with HIPAA, PCI-DSS, and SOC 2 audit requirements.
CTOs at Series A startups who need a scalable API from day one hire IRPR. Engineering managers at mid-market companies replacing legacy monoliths engage us for greenfield APIs. Product owners at fintech firms require PCI-compliant payment APIs. SaaS founders trust us to build multi-tenant backends with 99.9% uptime.
Types of software we ship.
RESTful API
Standard CRUD APIs for resource-oriented services. Built with Node.js and Express. Integrated with Swagger for documentation.
GraphQL API
Flexible query language APIs for complex data fetching. Apollo Server with TypeScript. Supports federation and subscriptions.
WebSocket API
Real-time bidirectional communication for live dashboards, chat, and notifications. Built with Socket.IO or AWS API Gateway WebSockets.
Microservices API Gateway
Unified entry point for multiple backend services. Kong or Traefik with rate limiting, auth, and routing. Reduces client complexity.
Third-Party Integration API
APIs that connect your app to Stripe, Salesforce, HubSpot, or Slack. Handles OAuth2, webhooks, and data syncing at scale.
Internal Data API
Backend APIs for internal tools and dashboards. Uses PostgreSQL, Redis caching, and Kafka for event-driven data pipelines.
Real-Time Analytics API
Streaming APIs for live metrics and user behavior. Built with Apache Flink or Kinesis. Latency under 100ms.
Admin Dashboard Backend API
Secure admin endpoints for managing users, roles, and permissions. Leverages RBAC, audit logs, and multi-tenancy features.
We build for every business type.
Fintech
Healthcare
Ecommerce
SaaS
Logistics
Metrics from a Senior Backend API Development Vendor
IRPR delivers measurable results for every API we build.
Every project we take on as a senior backend API development vendor is tracked against strict SLAs. We measure uptime, latency, and deployment frequency. Our mean time to recover is under 15 minutes.
Our clients see API response times drop from 500ms to under 50ms after migration. We reduce time to market by 40% compared to in-house builds.
Why Generic Dev Shops Fail as a Senior Backend API Development Vendor
Most agencies lack the senior talent to build APIs that scale.
Hiring a generic web development firm for backend API work often leads to technical debt and poor performance. Junior developers design monolithic endpoints without caching, load testing, or proper error handling.
IRPR is a senior backend API development vendor that staffs only engineers with 10+ years of experience. We implement horizontal scaling, circuit breakers, and idempotency keys from day one.
- Junior front-end developers writing backend code
- No API contract or schema validation
- No load testing until production fails
- No monitoring or error tracking setup
- Hourly billing with no ceiling
- No compliance certifications (HIPAA, PCI-DSS)
- Senior backend engineers with 10+ years each
- OpenAPI specs written before any code
- Load testing with k6 before going live
- Sentry and DataDog monitoring from day one
- Fixed price with clear scope
- HIPAA, PCI-DSS, SOC 2 compliance built in
How Our Senior Backend API Development Vendor Process Works
We follow a 4-phase process to deliver production-ready APIs on time and on budget.
Phase 1: Discovery - we map out your data models, endpoints, and security requirements. This takes 1-2 weeks and results in a detailed technical specification.
Phase 2: Roadmap - we provide a fixed quote and timeline. No surprises. You know the exact cost and delivery date before we write a line of code.
What Ships When You Hire IRPR as Your Senior Backend API Development Vendor
Every API project includes a complete set of production-ready deliverables.
You are not just getting code. You are getting a fully operational backend system with monitoring, documentation, and automated pipelines. Nothing is left for you to figure out.
We transfer everything into your own AWS account. You have full control from day one.
- Full source code in your private GitHub repo
- OpenAPI/Swagger documentation
- CI/CD pipeline with GitHub Actions
- Automated unit and integration tests (90%+ coverage)
- Load testing scripts with k6
- Sentry error tracking and DataDog monitoring
- Database migrations with Prisma or Drizzle
- Deployment to AWS ECS or Lambda
- Postman collection for manual testing
- Readme with runbooks and architecture diagrams
What we ship in this practice.
Payment Gateway API
Built a PCI-DSS compliant payment API that reduced transaction failure rate from 3% to 0.2%. Stack: Go, PostgreSQL, Stripe, Auth0. Handles 10,000 transactions per minute.
Telehealth Video Call API
Developed a HIPAA-compliant WebSocket API for real-time video and chat. Latency under 100ms. Integrated with Twilio and Amazon Chime. Serves 500 concurrent sessions.
Multi-Tenant SaaS API
Created a GraphQL API for a B2B SaaS platform with row-level security. PostgreSQL with row-level security per tenant. Reduced query time by 60% compared to REST.
Order Fulfillment API
Built an event-driven API for a mid-market ecommerce brand. Uses Kafka and Redis to process 100,000 orders per day. Cut order processing time from 5 minutes to 10 seconds.
Real-Time Inventory Sync API
Delivered a Webhook API that syncs inventory across 50 warehouses in real time. Built with Node.js and RabbitMQ. Reduced overselling incidents by 99%.
Patient Portal API
Developed a FHIR-compliant REST API for a large healthcare network. Integrates with Epic and Cerner. Handles 2 million API calls per day with 99.99% uptime.
Why teams hire us.
Senior engineers only
Every IRPR engineer has 10+ years of backend experience. We do not hire juniors or outsource to cheap labor. You get Node.js, Go, or Python experts who have built systems handling billions of requests.
Fixed price, not hourly
We quote a fixed price after a 2-week Roadmap phase. No hourly billing. No surprise invoices. You know the budget before we start building.
12-week MVP delivery
Most APIs are production-ready in 12 weeks. We ship in 2-week sprints with working endpoints every Friday. You see progress from day one.
Compliance baked in
We build HIPAA, PCI-DSS, and SOC 2 compliant APIs as the default. No costly retrofits. We have completed over 40 compliance audits.
You own every line of code
We transfer all source code, infrastructure config, and IP to you. No licensing fees. No black boxes. Your team can take over immediately.
Start within 1 week
We have availability for new projects within 1 week of contract signing. Our async-first model means we work across time zones and deliver on time.
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.
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