Professional REST API Development ServicesREST API
We build production-ready REST APIs in 8-12 weeks. Fixed pricing, full ownership, no surprises.
IRPR builds professional REST API development services using Node.js, Express, Python FastAPI, and Go. We design RESTful endpoints with OpenAPI 3.0 specs, JWT authentication, and rate limiting from day one.
Every API ships with automated tests (80%+ coverage), CI/CD via GitHub Actions, and Postman collections. Timelines run 8-12 weeks for a production-ready MVP. Pricing is fixed: $80K-$250K depending on endpoints and integrations. Compliance options include HIPAA, PCI-DSS, and SOC 2.
We work with CTOs launching a SaaS product who need a scalable backend, product managers integrating third-party data feeds, and startups building their first API-first platform. All get senior engineers, a single point of contact, and full code ownership.
Types of software we ship.
RESTful API for SaaS platforms
User management, subscription workflows, and webhook notifications built with Stripe and SendGrid integrations.
Data aggregation API
Collects and normalizes data from multiple sources like Salesforce, HubSpot, and Google BigQuery into one endpoint.
Payment gateway API
Handles transactions, refunds, and reconciliation with Stripe Connect or Braintree, PCI-DSS Level 1 compliant.
Healthcare API (FHIR)
Exchanges patient records using HL7 FHIR standards, HIPAA compliant with audit logging and encryption at rest.
Ecommerce product API
Manages product catalogs, inventory, and order status across Shopify, Magento, and custom backends.
Real-time notification API
Delivers push notifications and in-app alerts using WebSockets, Firebase, and Twilio with sub-second latency.
Geolocation API
Provides distance calculations, address autocomplete, and map tile serving with Google Maps and Mapbox.
Internal microservice API
Exposes business logic for internal teams with service discovery, circuit breakers, and gRPC or REST interfaces.
We build for every business type.
SaaS and platform companies
Healthcare and life sciences
Fintech and payments
Ecommerce and retail
Logistics and travel
Why professional REST API development services matter
A poorly designed API costs you time, money, and customers.
IRPR has shipped 200+ APIs across 50 countries. We see the same problems: no versioning, no rate limiting, no documentation. A professional REST API development service fixes these before you launch.
We design every API with OpenAPI 3.0 specs, JWT or OAuth2 authentication, and automated rate limiting. Endpoints are versioned (v1, v2) so you never break existing clients. Each API includes a Postman collection and auto-generated docs.
How IRPR compares to generic dev shops
Most agencies promise a REST API but deliver a mess.
Generic shops write endpoints without specs, skip error handling, and hand you a zip file. IRPR delivers a production-grade API with CI/CD, monitoring, and documentation.
We use the same tools as top engineering teams: Node.js, Express, PostgreSQL, Redis, Docker, and Kubernetes. Every project includes a Roadmap phase (week 2) where we define all endpoints, data models, and auth flows.
- No OpenAPI spec before coding
- No rate limiting or throttling
- No automated tests
- No deployment scripts
- No monitoring or alerting
- No versioning strategy
- OpenAPI 3.0 spec approved before code
- Rate limiting with Redis and token buckets
- 80%+ test coverage with Jest or PyTest
- CI/CD pipeline on GitHub Actions
- Sentry error tracking and Datadog metrics
- API versioning (v1, v2) from day one
Our 4-phase process for professional REST API development
We follow a repeatable process that removes guesswork.
Every professional REST API development services engagement at IRPR follows four phases. Each phase ends with a deliverable you approve before we move forward.
This process keeps timelines predictable and quality high. No scope creep, no surprises.
What ships with every professional REST API development project
You get more than endpoints. You get a production-ready system.
Every API includes documentation, monitoring, and deployment scripts. Nothing is left for you to figure out.
- OpenAPI 3.0 specification file
- Source code in your private GitHub repo
- CI/CD pipeline with GitHub Actions
- Postman collection with all endpoints
- Docker Compose file for local development
- Sentry error tracking configured
- Datadog or Prometheus metrics
- Rate limiting with Redis
- JWT or OAuth2 authentication
- API documentation (auto-generated with Swagger UI)
What we ship in this practice.
SaaS subscription management API
Built a REST API for a subscription analytics platform that handles 50,000+ users. Integrated Stripe for billing and SendGrid for email notifications. Reduced manual billing errors by 90%. Tech stack: Node.js, Express, PostgreSQL, Redis.
Healthcare FHIR data exchange API
Developed a HIPAA-compliant FHIR API for a telemedicine startup. Exchanges patient records, appointment data, and lab results with 3 hospital systems. Achieved 99.95% uptime over 12 months. Tech stack: Python FastAPI, FHIR STU3, PostgreSQL, AWS KMS.
Ecommerce product and order API
Created a unified product and order API for a multi-brand retailer. Syncs inventory across Shopify and a custom warehouse system. Cut order processing time from 4 hours to 15 minutes. Tech stack: Node.js, Express, MongoDB, Shopify API.
Fintech payment processing API
Built a PCI-DSS Level 1 compliant payment API for a lending platform. Handles 10,000+ transactions per day with tokenized card storage. Reduced chargeback rate by 40%. Tech stack: Go, Stripe Connect, PostgreSQL, Vault by HashiCorp.
Logistics real-time tracking API
Developed a real-time tracking API for a last-mile delivery company. Integrates GPS data from drivers' phones and provides ETA updates to customers. Reduced missed deliveries by 25%. Tech stack: Node.js, Express, WebSockets, Redis, Google Maps API.
Media content management API
Built a REST API for a digital media platform to manage articles, videos, and user subscriptions. Handles 1 million+ API calls per day with sub-200ms response times. Tech stack: Python FastAPI, PostgreSQL, Elasticsearch, AWS CloudFront.
Why teams hire us.
Fixed price, not hourly
Every professional REST API development services project gets a fixed quote in the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges.
Senior engineers only
No juniors. Every engineer has 8+ years of experience with REST APIs, Node.js, Python, or Go. You talk directly to the person writing your code.
Full code ownership
You own all source code, documentation, and deployment scripts. No licensing fees, no platform lock-in. IRPR hands over everything.
Compliance built in
We build HIPAA, PCI-DSS, and SOC 2 compliant APIs. Audit logs, encryption at rest, and access controls are standard, not add-ons.
8-12 week delivery
Most production-ready APIs ship in 8-12 weeks. We break work into 2-week sprints so you see progress every sprint and can adjust priorities.
Post-launch support
Every API comes with a 30-day warranty. We fix bugs, answer questions, and help with deployment issues. Extended support contracts available.
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.
─── share this page ───
