Top REST API Development ServicesREST API Development
We build secure, scalable REST APIs that integrate with your stack. 200+ products shipped with 99.9% uptime.
IRPR builds REST APIs that power web and mobile applications. We use Node.js, Python (FastAPI), and Go for high-performance endpoints.
We design, build, and document REST APIs in 8-12 weeks. Pricing starts at $80K and goes up to $250K depending on complexity and compliance needs like HIPAA or PCI-DSS.
Three buyer types hire us: CTOs at SaaS companies needing a public API layer, product owners at fintech firms requiring PCI-compliant integrations, and healthcare startups building HIPAA-compliant backend services.
Types of software we ship.
Public REST API
A customer-facing API that third-party developers authenticate via OAuth 2.0 and integrate with your platform.
Internal REST API
A private API for microservices communication, using RabbitMQ message queues and Redis caching.
Mobile Backend REST API
An API optimized for iOS and Android apps, with Firebase Cloud Messaging for push notifications.
REST API for Microservices
A lightweight API gateway (Kong or NGINX) that routes requests to multiple services and handles rate limiting.
Hybrid REST + GraphQL API
A unified data layer that exposes REST endpoints while also supporting GraphQL queries via Apollo Server.
REST API for ETL Pipelines
An API that ingests data from third-party sources (Salesforce, Stripe) and transforms it into your data warehouse (Snowflake).
IoT REST API
An API handling device registration, telemetry ingestion, and command dispatch using MQTT and AWS IoT Core.
AI/ML Model Serving REST API
An API that wraps a machine learning model (TensorFlow, PyTorch) and returns predictions in JSON format.
We build for every business type.
SaaS Companies
Fintech
Healthcare
Ecommerce
Enterprise
What Makes a Great REST API?
A top REST API is more than endpoints; it is a product that developers love to use.
We follow the OpenAPI 3.0 specification to ensure every endpoint is documented and testable from day one. Each API includes a Postman collection and an interactive Swagger UI sandbox.
Our APIs enforce consistent error handling (RFC 7807 problem details), rate limiting, and idempotency keys. We also version your API from the start (e.g., /v1/, /v2/) to avoid breaking changes.
Generic Agency vs IRPR
Most API projects fail because of poor documentation, no security review, and missing CI/CD.
A generic dev shop may deliver an API that works locally but fails under load and has no versioning. You end up with undocumented endpoints and no way to roll back.
IRPR delivers a production-ready REST API with full documentation, automated tests, and a CI/CD pipeline that deploys to your cloud (AWS, GCP, or Azure) every time you merge.
- No OpenAPI specification
- No versioning strategy
- No security review (OWASP)
- No CI/CD pipeline
- No monitoring or alerts
- No load testing
- OpenAPI 3.0 spec generated automatically
- Versioned endpoints (v1, v2) from day one
- OWASP Top 10 security review
- GitHub Actions CI/CD with staging + prod
- Sentry error tracking and Datadog monitoring
- k6 load tests with 95th percentile latency targets
Our REST API Development Process
We follow a 4-phase process that turns your idea into a production-ready API in 12 weeks.
Every project begins with a deep dive into your data model and business logic. We map out endpoints, authentication flows, and error handling before writing a single line of code.
You review the API contract (OpenAPI spec) during the Design phase. Changes are fast because there is no code to rewrite.
What Ships with Every REST API Project
You receive everything needed to maintain and scale your API independently.
All code is yours from the first commit. We never lock you into a proprietary platform or framework.
Each project includes a deployment playbook so your team can add new endpoints without relying on IRPR.
- OpenAPI 3.0 specification (YAML/JSON)
- Postman collection with environment variables
- Database schema diagrams (draw.io)
- Unit tests covering 90%+ of endpoints
- Integration tests with Docker Compose
- CI/CD pipeline on GitHub Actions
- Sentry error tracking and Datadog monitoring
- k6 load test scripts
- Deployment playbook (AWS / GCP / Azure)
- Environment setup scripts (Terraform or Pulumi)
What we ship in this practice.
Payment Gateway REST API
Built a PCI-DSS compliant API for a fintech startup that processes 50,000 transactions per month. Integrated with Stripe Connect and Braintree. Reduced manual reconciliation by 12 hours per week. Stack: FastAPI, PostgreSQL, Stripe SDK, and Redis for idempotency.
Patient Data API for Telemedicine
Designed a HIPAA-compliant REST API for a healthcare platform serving 20 hospitals. The API handles patient records, appointment scheduling, and video visit metadata. The team cut development time by 8 weeks using our OpenAPI-first approach. Stack: Node.js, Express, MongoDB Atlas, Auth0.
Inventory Management API
Created a REST API for an ecommerce brand with 50,000 SKUs across 3 warehouses. The API syncs inventory levels in real time with Shopify and Amazon. Stockout notifications now trigger within 30 seconds. Stack: Django REST Framework, PostgreSQL, Redis, AWS SQS.
Social Feed API for a Media App
Built a high-throughput REST API serving 500,000 daily active users. The API aggregates posts, likes, and comments with sub-100ms latency. Integrated with CloudFront CDN and Elasticsearch for search. Stack: Go, CockroachDB, Redis, gRPC for internal services.
Recommendation Engine REST API
Developed an API that wraps a collaborative filtering model (TensorFlow) and returns personalized product recommendations. Peak throughput of 2,000 requests/second with 99.95% uptime. Stack: Python, FastAPI, TensorFlow Serving, Kafka, PostgreSQL.
Notification Service API
Engineered a REST API that sends email, SMS, and push notifications for a SaaS platform with 10,000 users. The API handles 1 million notifications per month with delivery tracking. Integrated with SendGrid, Twilio, and Firebase Cloud Messaging. Stack: Node.js, Express, Bull queue, Redis, TypeScript.
Why teams hire us.
Fixed price from day one
Every project gets a fixed quote after the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges. Price is locked from the start.
Senior engineers only
Every engineer on your project has 10+ years of experience building production APIs. We do not hire juniors or outsource to offshore teams. Your API is architected by experts.
Full documentation included
You get an OpenAPI 3.0 spec, Postman collection, and a deployment playbook. Your team can onboard new developers in under an hour without calling us.
Security-first design
We run OWASP ZAP scans and review authentication tokens against OWASP Top 10. Compliance with HIPAA, PCI-DSS, or SOC 2 is built in, not bolted on later.
12-week delivery guarantee
We ship your REST API in 12 weeks or less. 98% of our projects finish on time. If we miss the deadline, you get a 10% refund of the total fee.
Own your source code
You have full ownership of every line of code from the first commit. No licensing fees, no ongoing royalties, no lock-in. The code lives in your GitHub repository.
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.