Rest API Development AgencyAPI Development
We ship production-ready REST APIs in 12 weeks. Fixed price, senior engineers, no surprise invoices.
IRPR builds custom REST APIs that connect your frontend, mobile apps, and third-party services. We use Node.js, Express, PostgreSQL, and Docker for containerized deployment.
Every REST API ships with auto-generated OpenAPI 3.0 documentation, unit tests, and CI/CD pipeline in 12-14 weeks. Pricing starts at $80K and goes to $250K depending on complexity and compliance requirements (HIPAA, PCI-DSS, SOC 2).
Series A SaaS startups needing a scalable backend, healthcare companies requiring HIPAA-compliant APIs, fintech firms with PCI-DSS data handling, and ecommerce platforms integrating with Stripe and Shopify hire us repeatedly.
Types of software we ship.
REST API for Ecommerce
Custom checkout, inventory sync, and product catalogs connecting Shopify, WooCommerce, and Stripe.
REST API for Real Estate
MLS data ingestion, property search endpoints, and Zillow integration for real estate platforms.
REST API for Healthcare
HIPAA-compliant FHIR endpoints for patient records, appointment scheduling, and EHR integration.
REST API for Fintech
Payment processing, Plaid account linking, and transaction APIs with PCI-DSS compliance.
REST API for Social Media
User feeds, content moderation, and analytics endpoints built with AWS Lambda and DynamoDB.
REST API for SaaS Backend
Multi-tenant auth, subscription management, and webhooks using Node.js and PostgreSQL.
REST API for IoT
Device data ingestion, MQTT bridges, and real-time alerts via AWS IoT Core and Redis.
REST API for CRM Integrations
Salesforce, HubSpot, and custom CRM sync with bidirectional data flows and rate limiting.
We build for every business type.
Ecommerce
Healthcare
Fintech
SaaS
Logistics
What a Rest API Development Agency Delivers
We build more than endpoints. Every API is a production-grade system designed for scale, security, and maintainability.
A REST API development agency provides the backend infrastructure that powers your business. At IRPR, we handle everything from schema design to deployment, including authentication, rate limiting, and monitoring.
Our APIs are built with senior engineers who have shipped 200+ products. We use Node.js, Python, or Go based on your needs, and every project includes Docker containerization and CI/CD via GitHub Actions.
How We Build APIs Differently
Most agencies bill hourly and hand off a zip file. We do the opposite.
We start with a 2-week Roadmap phase where we design your API spec, database schema, and deployment plan. You get a fixed price before any engineering begins.
Our team of senior engineers (8+ years experience) writes every line of code. You own everything - source code, documentation, and deployment scripts.
- Hourly billing with no cap
- Junior or mid-level engineers
- No API documentation
- No CI/CD pipeline
- You never get the full codebase
- Late delivery, often 6+ months
- Fixed price from Roadmap phase (week 2)
- Senior engineers only (8+ years)
- Auto-generated OpenAPI 3.0 spec
- GitHub Actions CI/CD out of the box
- Full code ownership transferred
- 12 week delivery guaranteed
Our 4-Phase API Development Process
From spec to production in 12 weeks, with a fixed price locked after phase 1.
Every project follows the same proven process: Discovery, Design, Build, Deploy. We never skip testing or documentation.
You get weekly demos and a staging environment by week 6. Changes are easy because you are part of every decision.
What Ships with Every API
You don't just get endpoints. You get a complete, deployable system with everything needed to maintain and scale.
Every IRPR project includes documentation, infrastructure, and testing. We never hand over a codebase without the tools to run it.
Our delivery ensures your team can pick up and extend the API immediately. All code is in your private GitHub repo on day one.
- Source code in your private GitHub repository
- OpenAPI 3.0 specification (YAML/JSON)
- Postman collection with all endpoints
- Unit tests with Jest (90%+ coverage)
- CI/CD pipeline via GitHub Actions
- Docker containers for dev, staging, production
- Staging environment on AWS EC2 or GCP GKE
- Production deployment with CloudFront CDN
- Sentry error and performance monitoring
- API documentation site using Redoc
What we ship in this practice.
Restaurant Ordering API
Built a RESTful API for a mobile ordering app that reduced order errors by 90%. Tech stack: Node.js, PostgreSQL, Stripe, Twilio. Industry: Food and Beverage.
Payment Processing API for Fintech
Developed a PCI-DSS compliant API handling $5M in monthly transactions. Integrated with Plaid, Stripe, and custom banking gateways. Next.js frontend, Python backend. Industry: Fintech.
Patient Portal API for Healthcare
Created a HIPAA-compliant REST API connecting patients with doctors. Supports FHIR, Epic integration, and real-time appointment booking. Node.js, Docker, AWS. Industry: Healthcare.
Multi-Tenant Ecommerce API
Designed an API for a platform serving 50+ stores, managing $300K MRR. Shopify integration, custom inventory logic, Stripe subscription billing. Next.js, PostgreSQL. Industry: Ecommerce.
Last-Mile Delivery API for Logistics
Built a REST API that reduced delivery time by 25% through real-time route optimization. Integrated with FedEx, UPS, and Google Maps APIs. Python FastAPI, Redis, Docker. Industry: Logistics.
SaaS Subscription Billing API
Delivered a billing API for a SaaS product managing 10K active subscribers. Handles prorations, invoices, webhooks, and dunning. Node.js, Stripe, PostgreSQL, background jobs with Bull. Industry: SaaS.
Why teams hire us.
Fixed price, not hourly
Every project gets a fixed quote in the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges.
Senior engineers only
Our team averages 10+ years of experience. We assign only engineers who have built and maintained production APIs at scale.
12 week delivery
We ship your REST API in 12 weeks or less, guaranteed. Over 98% of our projects finish on time.
Full code ownership
You own every line of code from day one. We transfer all rights, no licenses, no lock-in.
OpenAPI documentation by default
Every API comes with an auto-generated OpenAPI 3.0 spec and a hosted documentation site. Your team can start integrating immediately.
Compliance ready
We have built HIPAA, PCI-DSS, and SOC 2 compliant APIs for 10+ clients. Every project includes security reviews and penetration testing.
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.