Senior Backend API Development AgencyBackend API
We build production-grade APIs with senior engineers. Fixed price, 8-12 weeks to launch.
IRPR is a senior backend API development agency. We build APIs using Node.js, Go, Python (FastAPI), and .NET Core. Our APIs handle authentication, rate limiting, caching with Redis, and database queries on PostgreSQL or MongoDB.
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 source code, CI/CD pipeline, and API documentation (OpenAPI/Swagger).
CTOs hire us when their in-house team lacks senior API engineers. Startup founders hire us to build the backend for their SaaS MVP. Enterprise product managers hire us to replace slow, unreliable third-party APIs with custom internal services.
Types of software we ship.
REST API Development
Stateless, resource-oriented APIs using Express.js or FastAPI. Includes JWT auth, pagination, and OpenAPI docs.
GraphQL API Development
Schema-first GraphQL APIs with Apollo Server or Hasura. Supports real-time subscriptions and federated gateways.
Microservices API Development
Distributed APIs with Docker, Kubernetes, and gRPC. Each service is independently deployable and scalable.
Third-Party API Integration
Integrate Stripe, Salesforce, HubSpot, Twilio, or any REST/SOAP API. Includes error handling and retry logic.
API Gateway Development
Build a unified gateway with Kong or AWS API Gateway. Handles routing, rate limiting, and API key management.
Real-Time API Development
WebSocket and Server-Sent Events APIs using Socket.IO or AWS AppSync. For chat, live dashboards, and notifications.
Data API Development
APIs that expose complex database queries via REST or GraphQL. Uses PostgreSQL, Elasticsearch, and Redis for performance.
Legacy API Modernization
Replace SOAP or XML-RPC APIs with modern REST or GraphQL endpoints. Includes migration of existing clients.
We build for every business type.
Healthcare
Fintech
Ecommerce
SaaS
Logistics and Travel
Why Hire a Senior Backend API Development Agency
Building APIs in-house often takes longer and costs more than expected.
IRPR has shipped over 200 products across 50+ countries. Our senior engineers average 10+ years of experience building production APIs. We use Node.js, Go, Python, and .NET Core with PostgreSQL, Redis, and Kafka.
A typical API project takes 8-12 weeks from kickoff to launch. We deliver a fixed price quote in the Roadmap phase (week 2). No hourly billing, no scope creep. You own the code and the CI/CD pipeline.
How IRPR Builds APIs Differently
Most agencies promise senior engineers but deliver juniors. We don't.
Every engineer at IRPR has shipped at least 5 production APIs before joining. We do not outsource. We do not hire junior developers. Every project is led by a senior engineer who writes code and reviews PRs.
We follow a 4-phase process: Idea (week 1), Roadmap (week 2), Product (weeks 3-10), Release (weeks 11-12). You get a detailed spec and fixed price before any code is written.
- Hires junior developers to keep costs low
- Charges hourly, no fixed price
- No API documentation by default
- No CI/CD or monitoring setup
- Scope creep leads to 2x budget overruns
- You don't own the code or infrastructure
- Senior engineers only - average 10+ years experience
- Fixed price quote in week 2, no surprises
- OpenAPI/Swagger docs included in every project
- CI/CD pipeline with GitHub Actions and Sentry
- Scope is locked in Roadmap phase, no creep
- Full source code ownership from day one
Our API Development Process
We ship fast because we follow a repeatable 4-phase process.
Every project starts with a discovery call to understand your data model, performance requirements, and compliance needs. We then move through four phases, each with clear deliverables.
By week 10, your API is deployed to staging with monitoring, logging, and automated tests. The final two weeks are for load testing and production deployment.
What Ships With Every API Project
Every deliverable is concrete and immediately usable by your team.
When we finish an API project, your team can take over immediately. We hand over everything needed to run, monitor, and extend the API without relying on IRPR.
All deliverables are provided in your own GitHub repository. We set up the infrastructure in your AWS, GCP, or Azure account from day one.
- Source code in your GitHub repository
- CI/CD pipeline with GitHub Actions
- API documentation (OpenAPI/Swagger UI)
- Postman collection for manual testing
- Integration test suite (Jest, pytest, or Go test)
- Docker Compose file for local development
- Sentry error tracking and Datadog monitoring
- Load test report (k6 or Artillery)
- Deployment guide with step-by-step instructions
- 30-day warranty for bug fixes and support
What we ship in this practice.
HIPAA-Compliant Patient Data API
Built a REST API for a telehealth startup that handles patient records, appointment scheduling, and video session metadata. Reduced manual data entry by 8 hours per week per clinician. Stack: FastAPI, PostgreSQL, Redis, AWS (HIPAA-eligible).
PCI-DSS Payment Gateway API
Replaced a legacy SOAP payment API with a RESTful gateway for a fintech company processing $2M monthly. Achieved 99.9% uptime and cut average response time from 800ms to 120ms. Stack: Node.js, Stripe API, PostgreSQL, Docker.
Ecommerce Product Catalog API
Designed a GraphQL API for an online retailer with 50K products. Enabled real-time inventory sync across 3 warehouses. Reduced page load time by 40%. Stack: Apollo Server, MongoDB, Redis, AWS AppSync.
SaaS Multi-Tenant API
Developed a multi-tenant REST API for a B2B SaaS platform serving 200+ enterprise clients. Implemented tenant isolation with row-level security in PostgreSQL. Stack: Ruby on Rails, PostgreSQL, Sidekiq, Heroku.
Real-Time Fleet Tracking API
Built a WebSocket-based API for a logistics company to track 500+ vehicles in real time. Integrated with GPS hardware and Google Maps. Reduced dispatch response time by 60%. Stack: Node.js, Socket.IO, Redis, MongoDB.
Media Content Delivery API
Created a REST API for a media company to serve video metadata, thumbnails, and streaming URLs. Handles 10 million requests per day with 99.9% uptime. Stack: Go, PostgreSQL, CloudFront, Elasticsearch.
Why teams hire us.
Senior Engineers Only
Every engineer on your project has 10+ years of experience building production APIs. We do not hire juniors or outsource work. You talk directly to the engineer writing your code.
Fixed Price, Not Hourly
You get a fixed price quote in week 2 after the Roadmap phase. 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 cutting corners. 98% of our projects deliver on time.
Full Code Ownership
You own all source code, documentation, and infrastructure from day one. No licensing fees, no vendor lock-in. Your team can take over immediately after launch.
Compliance Built In
We build APIs that meet HIPAA, PCI-DSS, and SOC 2 requirements. Our engineers know how to implement audit logging, encryption at rest and in transit, and access controls.
Post-Launch Warranty
Every project includes a 30-day warranty for bug fixes and support. We stay on standby for critical issues. Your API runs on your infrastructure with our monitoring.
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.