Leading REST API Development AgencyREST API
Build APIs that scale from day one. We ship production-ready REST APIs in 8-12 weeks with fixed pricing and full code ownership.
IRPR builds production-grade REST APIs for startups and enterprises. We use Node.js, Python (FastAPI), and Go with tools like Postman, Swagger, and AWS API Gateway to design, document, and deploy endpoints that handle millions of requests per day.
A typical REST API project ships in 8-12 weeks with a fixed price of $80K-$250K. We follow HIPAA, PCI-DSS, and SOC 2 compliance standards where needed. Every API includes automated tests, monitoring, and versioning from the first sprint.
We work with SaaS founders who need a scalable API backend, CTOs integrating legacy systems with modern RESTful services, mobile app startups requiring secure endpoints, and fintech companies that need PCI-compliant payment APIs.
Types of software we ship.
Public REST API
A customer-facing API for third-party developers. Includes rate limiting, OAuth2, and usage analytics via Stripe billing integration.
Internal Microservice API
Inter-service communication API for modular backends. Uses gRPC or RabbitMQ internally with REST endpoints for external consumers.
RESTful CRUD API
Simple create-read-update-delete endpoints for managing resources. Built with Django REST Framework or Express.js with PostgreSQL.
Real-time WebSocket API
WebSocket-based API for live data streaming. Used in chat apps, dashboards, and IoT. Handles 10K+ concurrent connections with Redis Pub/Sub.
Partner API
B2B API for partners to integrate your core services. Includes API keys, webhooks, and custom rate limits per partner.
Third-party API Integration
Wrap external APIs (Stripe, Twilio, HubSpot) into unified RESTful endpoints. Reduces vendor lock-in and simplifies client code.
API Gateway & Proxy
A single entry point for multiple backend services. Adds authentication, caching, and logging using AWS API Gateway or Kong.
Data Aggregation API
Combine data from multiple sources into one REST API. Pulls from databases, APIs, and CSV files using ETL processes with Airflow.
We build for every business type.
Fintech
Healthcare
Ecommerce
SaaS
Logistics & Travel
Why IRPR is a leading REST API development agency
We ship production APIs on time, on budget, and with full documentation.
IRPR has delivered over 200 products across 50+ countries. Our REST APIs handle 100K+ requests per day with 99.9% uptime. We use automated load testing with k6 and continuous deployment via GitHub Actions.
Every API ships with OpenAPI 3.0 specs, Postman collections, and a monitoring dashboard (Datadog or Grafana). Clients own the full codebase and we provide a 30-day post-launch support window.
Generic dev shop vs. a leading REST API development agency
Not all agencies deliver APIs that scale. Here's how IRPR stands apart.
Generic shops reuse templates, skip documentation, and bill hourly. That leads to technical debt and surprise costs. We treat every API as a product.
IRPR uses a fixed-price Roadmap phase to define endpoints, data models, and security requirements before a single line of code is written. You know the cost and timeline upfront.
- Hourly billing with scope creep
- No API documentation by default
- Rarely handles rate limiting or auth
- No versioning strategy
- Single server deployment only
- No post-launch monitoring setup
- Fixed price with no surprise invoices
- OpenAPI 3.0 specs and Postman collections included
- OAuth2, JWT, and API key auth out of the box
- Semantic versioning and deprecation policies
- Auto-scaling on AWS/Azure with Terraform
- Datadog/Grafana dashboards and 30-day support
How we design and ship your REST API
Four phases from idea to deployed endpoints in under 12 weeks.
We start with a 2-week Roadmap phase where we define endpoints, data contracts, and security requirements. This phase locks scope and price.
Then we build iteratively: each sprint delivers working, tested endpoints. You see a demo every week and can adjust priorities.
What ships with your REST API
Every project includes these deliverables without exception.
You own every file from day one. We don't hold code hostage.
All documentation, tests, and deployment scripts are in your repo and ready for your team to maintain.
- Source code in your private GitHub/GitLab repo
- OpenAPI 3.0 specification (YAML/JSON)
- Postman collection with example requests
- Unit and integration tests (80%+ coverage)
- CI/CD pipeline (GitHub Actions, Docker, Terraform)
- API monitoring dashboard (Datadog or Grafana)
- Rate limiting and authentication (JWT/OAuth2)
- Webhook delivery system with retry logic
- Performance load test results (k6 report)
- 30-day post-launch support and bug fixes
What we ship in this practice.
Payment Gateway API for a Fintech Startup
We built a PCI-compliant REST API that processes 5,000 transactions per minute. Integrated with Stripe and Plaid. The MVP was live in 10 weeks and reduced payment failures by 30%.
Patient Data API for a Telehealth Platform
A HIPAA-compliant REST API for patient records, scheduling, and video call metadata. Used FastAPI and PostgreSQL. Handles 50K patient records with sub-200ms response times.
Inventory API for an Ecommerce Brand
Unified REST API across Shopify, Amazon, and warehouse systems. Real-time sync with Redis caching. Reduced stock discrepancies by 60% and cut order errors to under 1%.
Multi-tenant SaaS API for an Analytics Platform
REST API with tenant isolation via JWT and PostgreSQL row-level security. Supports 200+ tenants with custom rate limits. Delivered in 8 weeks, cost $95K fixed.
Tracking API for a Logistics Company
RESTful endpoints for real-time GPS tracking, route optimization, and ETA calculations. Integrated with Google Maps API and Twilio for SMS alerts. Handles 100K+ tracking updates daily.
Booking API for a Travel Platform
REST API for hotel and flight booking with inventory management. Built with Node.js and Redis for session caching. Processes 200+ bookings per minute with 99.98% uptime.
Why teams hire us.
Fixed price, not hourly billing
Every REST API project gets a fixed quote after the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges. You know the cost before we write code.
Senior engineers only, no juniors
Our team averages 10+ years of experience and has shipped APIs for companies like Stripe, Twilio, and HubSpot. You work directly with the engineers building your product.
Full code ownership from day one
Source code, documentation, CI/CD pipelines, and all credentials go into your repository. You can take the API to any team after delivery. No lock-in.
Compliance built in, not bolted on
We implement HIPAA, PCI-DSS, and SOC 2 controls from the first sprint. Your API passes audits because we design for compliance, not retrofit it.
Real-time communication with async flexibility
We work across 50+ countries with daily async updates and weekly demo calls. You get a dedicated project manager and a shared Slack channel with the entire team.
Proven track record with measurable results
Over 200 products delivered with 98% on-time rate. Our APIs average 99.9% uptime and handle millions of requests per month. Clients include funded startups and Fortune 500 companies.
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.