Professional API Development DevelopersAPI Development
We build production-grade APIs that scale to millions of requests. Get a fixed price and clear timeline for your REST, GraphQL or microservices backend.
IRPR builds custom APIs for web and mobile applications. We use Node.js, FastAPI, and GraphQL to deliver endpoints that handle authentication, data syncing, and third-party integrations.
Every project ships in 8 to 12 weeks with a fixed price between $80,000 and $250,000. We design for HIPAA, PCI-DSS, and SOC 2 compliance from day one.
Our clients include CTOs who need to scale their integration layer, product managers launching SaaS platforms, startups building their core product backend, and enterprise teams migrating legacy REST APIs to microservices architecture.
Types of software we ship.
REST API Development
Stateless endpoints with JSON payloads. We use Express or FastAPI, add OpenAPI docs, and include rate limiting and auth (JWT/OAuth).
GraphQL API Development
Single endpoint with query complexity controls. Built with Apollo Server, integrated with React or mobile clients using Relay.
Microservices API Architecture
Decoupled services communicating via gRPC or message queues. Each service scales independently, deployed on Kubernetes.
Webhook System Development
Event-driven notifications to third parties. Built with RabbitMQ or Redis, includes retry logic and delivery logs.
API Gateway Development
Central entry point for multiple backends. Configured with Kong or AWS API Gateway, handling auth, throttling, and routing.
Real-time API (WebSocket)
Persistent connections for live data. Built with Socket.IO or WebSocket API, integrated with Redis pub/sub for horizontal scaling.
Internal API (gRPC)
High-performance service-to-service calls. Proto definitions compiled in Go or Node, with TLS encryption and load balancing.
Third-party API Integration
Bridge between existing systems and external APIs. Connects Stripe, Salesforce, Twilio, or custom SOAP endpoints with error handling.
We build for every business type.
SaaS companies:
fintech:
healthcare:
ecommerce:
tech startups:
Why professional API development developers matter
A poorly designed API breaks integrations, creates security holes, and slows down every feature your team builds.
IRPR's senior engineers have built over 200 production APIs. We follow REST conventions or GraphQL schemas, add versioning, and write comprehensive tests. Every endpoint includes error handling, rate limiting, and monitoring via Datadog.
For compliance-critical industries, we embed security headers, encrypt data at rest and in transit (AES-256, TLS 1.3), and generate OpenAPI specs automatically. Our APIs pass PCI-DSS and SOC 2 audits because we bake controls into the code, not bolted on after.
What separates professional API development developers from freelancers
Most freelancers deliver one endpoint, then disappear. IRPR delivers a production system with documentation, monitoring, and a deployment pipeline.
IRPR assigns a team of 3-4 senior engineers: backend, DevOps, and QA. We use GitHub flow, containerize everything in Docker, and deploy on AWS ECS or Kubernetes. Code is yours from day one.
Every API ships with auto-generated documentation (Swagger), a Postman collection, and a runbook for on-call engineers. We also include a Grafana dashboard showing real-time latency and error rates.
- No API design guidelines
- No automated tests
- No rate limiting or auth
- No deployment config
- No monitoring setup
- No SLA for uptime
- OpenAPI spec before code
- Integration tests in CI
- JWT + API key auth built in
- Docker + CI/CD pipeline
- Datadog + Sentry monitoring
- 99.9% uptime SLA
How we build your API in 8-12 weeks
We break every API project into four phases so you see working endpoints by week 4.
What we deliver with every API
Every project ships a complete, deployable backend — not a prototype.
- Source code in your GitHub repo
- CI/CD pipeline with GitHub Actions
- Docker images for each service
- Postman collection with 50+ requests
- Swagger UI documentation
- Grafana dashboard with 4 panels
- Sentry error tracking configured
- SQL migration scripts for PostgreSQL
- Load test report (Locust or k6)
- Runbook for production incidents
What we ship in this practice.
SaaS integration API
Built a unified API for a CRM platform that connects to Salesforce, HubSpot, and Mailchimp. Reduced integration time for new customers from 4 weeks to 3 days. Stack: Node.js, Express, PostgreSQL, Redis.
Real-time order tracking API
Developed a WebSocket API for a food delivery startup. Handles 5,000 concurrent connections with 200ms latency. Reduced customer support tickets by 40%. Stack: FastAPI, Redis, Socket.IO, AWS ECS.
HIPAA-compliant patient data API
Created a FHIR-based API for a telehealth platform. Passed HITRUST audit in week 10. Rails processed 1 million patient records per day. Stack: Python, Flask, PostgreSQL, AWS Lambda.
Payment processing API for fintech
Designed a PCI-DSS compliant API that integrates with Stripe and Plaid. Handles $5M in monthly transactions with 0% data loss. Stack: Go, gRPC, PostgreSQL, Kong Gateway.
Microservices refactor for legacy monolith
Decomposed a monolithic Ruby on Rails app into 12 microservices. Reduced deployment time from 2 hours to 5 minutes. Stack: Node.js, RabbitMQ, Docker, Kubernetes.
IoT data ingestion API
Built a high-throughput API for a logistics company. Ingests 50,000 device events per second and stores in time-series database. Reduced data loss from 5% to 0.01%. Stack: Python, FastAPI, InfluxDB, Kafka.
Why teams hire us.
Fixed price from day one
Every API 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
We hire no juniors. Every developer has 8+ years of backend experience. Senior engineers design your API, write the code, and deploy it. No handoffs to offshore teams.
API-first documentation
We generate OpenAPI 3.0 specs before any code. Your frontend team can start mocking integration using the spec while we build the backend. This cuts total development time by 30%.
Built-in compliance
We bake HIPAA, PCI-DSS, and SOC 2 controls into the codebase. Audit logs, encryption, access controls are not retrofitted — they are part of the architecture from sprint one.
99.9% uptime SLA
Every production API includes health endpoints, automated failover, and Datadog monitoring. We guarantee 99.9% uptime and provide a public status page for your team.
Full ownership of code
You own every line of code, every Dockerfile, and every Terraform script. No proprietary frameworks, no locked-in tools. You can move the API to any team or cloud provider after launch.
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.