Top Custom API Development TeamAPI Development
We build production-grade APIs in 12 weeks. Your spec, your code, no surprises.
IRPR is the top custom API development team for companies that need production-quality APIs fast. We build REST APIs with Node.js and Express, GraphQL APIs with Apollo, and microservices with FastAPI or Go. Every API ships with auto-generated documentation, rate limiting, and monitoring.
A custom API project from IRPR takes 8 to 12 weeks and costs $80,000 to $250,000 depending on scope. You get a fixed price after the two-week Roadmap phase. All work meets compliance standards including HIPAA, PCI-DSS, and SOC 2.
We work with CTOs launching SaaS platforms who need secure third-party integrations, product managers building API-first features for existing products, and founders creating real-time data pipelines for fintech or logistics. Every client gets a senior engineer who codes, not a team of juniors.
Types of software we ship.
REST API Development
Standard RESTful endpoints using Express.js or FastAPI. Includes OpenAPI/Swagger docs, JWT auth, and Postman collections.
GraphQL API Development
Single GraphQL endpoint with Apollo Server. Covers schema design, resolvers, caching with Redis, and Apollo Studio monitoring.
Microservices API Architecture
Multiple services with gRPC or message queues (RabbitMQ, Kafka). Each service has its own database and CI/CD pipeline.
Third-Party API Integration
Connect your app to Stripe, Salesforce, HubSpot, or any external API. Handles OAuth, webhooks, and error retry logic.
API Gateway Development
A single entry point for all microservices using Kong or AWS API Gateway. Includes authentication, throttling, and logging.
Real-Time API (WebSocket)
Low-latency two-way communication with Socket.io or WebSockets. Used for live chat, dashboards, and tracking systems.
Data API (ETL & Analytics)
REST endpoints that return aggregated data from PostgreSQL, BigQuery, or Snowflake. Built with caching to handle millions of rows.
Mobile API Backend
Backend for iOS/Android apps featuring push notifications, file uploads, and offline sync. Uses Firebase or custom Node.js.
We build for every business type.
SaaS Platforms
eCommerce & Marketplaces
Healthcare
Fintech
Logistics & Supply Chain
Why you need a dedicated custom API development team
Off-the-shelf APIs break when your business grows. A custom API fits your exact data model and scales without rewrites.
IRPR builds APIs that handle 10x traffic spikes without downtime. We use load testing tools like k6 to validate performance before launch. Every API ships with Sentry error tracking and New Relic monitoring.
Our team writes clean, typed code in TypeScript or Go. You get a Postman collection, Swagger docs, and a CI/CD pipeline that deploys to AWS or GCP. No legacy tech, no code debt.
Custom API development done right
Most agencies treat your API as a side project. We treat it as the backbone of your product.
Generic dev shops reuse boilerplate, skip testing, and deliver spaghetti code. Then they charge you hourly to fix bugs. IRPR builds every API from scratch with your use case in mind.
We write integration tests, unit tests, and end-to-end tests. Every endpoint is documented in OpenAPI 3.0. You own the code from day one.
- Junior engineers working on multiple projects
- No dedicated project manager
- Hourly billing with scope creep
- No automated tests or CI/CD
- Inconsistent code style
- You don't own the code until final payment
- Senior engineers only (average 10+ years)
- Dedicated PM and weekly demos
- Fixed price after Roadmap phase
- Full test suite and CI/CD pipeline
- TypeScript or Go with strict linting
- Code in your repo from sprint one
How we build your custom API in 12 weeks
We follow a four-phase process that eliminates guesswork. No fake Agile, no endless discovery.
Most API projects fail because the team starts coding without understanding the data and the consumers. IRPR spends the first two weeks defining the contract and the architecture.
After the Roadmap, we deliver working endpoints every week. You test them in staging with real data. Changes are made immediately, not at the end.
What ships with every custom API project
You get more than code. Every deliverable is designed to keep your team independent after launch.
IRPR doesn't lock you into a long-term contract. We give you everything needed to maintain and extend the API yourself, including full documentation and infrastructure-as-code.
All source code is in your GitHub repo from the first sprint. You can deploy to AWS, GCP, or Azure using the provided Terraform scripts.
- Source code in your private GitHub repo
- OpenAPI 3.0 documentation
- Postman collection with examples
- CI/CD pipeline on GitHub Actions or GitLab CI
- Infrastructure as code (Terraform / Pulumi)
- Sentry error tracking set up
- New Relic or Datadog performance monitoring
- Load testing report with k6
- Architecture diagram (Draw.io / Lucidchart)
- Deployment runbook and rollback plan
What we ship in this practice.
Real-Time Payment Processing API
Built for a fintech startup handling 10k transactions per hour. Uses Stripe Connect, WebSockets for live status, and TimescaleDB for fraud detection. Reduced payment failures by 30%.
Patient Data Exchange API
HIPAA-compliant API linking a hospital EHR with lab systems. Uses FHIR standards, encrypted payloads, and audit logging. Cut data entry time by 12 hours per week.
Ecommerce Order Sync API
REST API that syncs orders between Shopify, Amazon, and a custom warehouse system. Uses PostgreSQL queues and retry logic. Eliminated duplicate orders and saved $50k/month in errors.
Multi-Tenant SaaS API Gateway
GraphQL gateway for a B2B analytics platform. Handles per-tenant rate limiting, caching, and authentication with Auth0. Supports 500+ tenants without performance degradation.
Logistics Tracking WebSocket API
Real-time API for a fleet management company. Uses Kafka and Redis to stream GPS coordinates every 2 seconds. Reduced manual check-ins by 90%.
Learning Management System API
RESTful API powering a university's LMS. Integrates Canvas, Zoom, and Slack. Supports 20k concurrent users during exam season. FERPA compliant with role-based access.
Why teams hire us.
Fixed price, not hourly
Every API project gets a fixed quote after the two-week Roadmap phase. No hourly billing, no surprise invoices, no scope creep charges.
Senior engineers only
Our team averages 10+ years of experience. You never get a junior learning on your dime. Every line of code is reviewed by a principal engineer.
Full code ownership
Source code is in your repository from day one. You own everything: the API, the tests, the infrastructure scripts. No licenses, no lock-in.
Compliance built in
We build APIs that pass HIPAA, PCI-DSS, and SOC 2 audits. Encryption, access logs, and data retention policies are part of the standard delivery.
12-week delivery guarantee
Our process is designed for speed. 90% of API projects ship in 12 weeks or less. If we miss the deadline, you don't pay for the extra weeks.
Post-launch support included
You get 30 days of free bug fixes and deployment support after launch. After that, we offer a maintenance retainer at $2,500/month if you need ongoing updates.
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.