Top Rest API Development ConsultantsAPI Development
We build REST APIs that scale. 8-12 week delivery, fixed price, senior engineers only.
IRPR is a team of senior engineers who design and build REST APIs for companies that need reliable, scalable integrations. We use FastAPI, Node.js, Next.js, PostgreSQL, Redis, and AWS to deliver APIs that handle millions of requests per day.
Every project ships in 8-12 weeks with a fixed price between $80K and $250K. We handle compliance like HIPAA, PCI-DSS, and SOC 2. You get full source code, CI/CD pipelines, and Postman collections.
CTOs hire us when their in-house team is too busy. Product owners hire us to launch a new API-first product. Startup founders hire us to build the backend for their MVP and avoid tech debt.
Types of software we ship.
REST API for SaaS platforms
Multi-tenant REST APIs with rate limiting, authentication (JWT/OAuth2), and Stripe billing integration.
REST API for mobile apps
Lightweight REST endpoints optimized for mobile clients. Uses Firebase Cloud Messaging and offline-first patterns.
REST API for ecommerce
Product catalog, cart, checkout, and order management APIs. Integrates with Shopify, Magento, and Stripe.
REST API for healthcare
HIPAA-compliant APIs for EHR integration, patient portals, and telehealth. Uses FHIR standards and AES-256 encryption.
REST API for fintech
PCI-DSS compliant APIs for payment processing, KYC verification, and transaction history. Integrates with Plaid and Stripe.
REST API for IoT
REST endpoints for device management, telemetry ingestion, and real-time alerts. Uses MQTT bridge and TimescaleDB.
REST API for real estate
MLS-integrated APIs for property search, listing management, and lead capture. Uses IDX and RetS standards.
REST API for data analytics
REST endpoints for data ingestion, query, and export. Supports Snowflake, BigQuery, and Redshift backends.
We build for every business type.
SaaS companies
Ecommerce brands
Healthcare organizations
Fintech companies
Enterprise IT
Why hire top rest api development consultants
Building a production-grade REST API requires deep knowledge of architecture, security, and scaling.
A poorly designed API leads to slow integrations, security holes, and expensive rewrites. IRPR has shipped 200+ REST APIs for clients in 50+ countries. Our APIs handle 10,000+ requests per second with 99.9% uptime.
We use OpenAPI 3.0 for documentation, Postman for testing, and Datadog for monitoring. Every API comes with automated tests, rate limiting, and caching strategies. We follow REST best practices: HATEOAS, idempotency, pagination, and proper HTTP status codes.
How IRPR differs from other API consultants
Most agencies bill by the hour and deliver late. IRPR works differently.
Generic dev shops start coding without a clear roadmap. They use junior developers, change requirements mid-project, and bill for every extra hour. IRPR does the opposite.
We start with a 2-week Roadmap phase where we define endpoints, data models, and security requirements. You get a fixed price and a clear timeline. No surprises.
- Hourly billing with no cap
- Junior developers building your API
- No documentation until the end
- No automated testing
- No CI/CD pipeline
- Code ownership unclear
- Fixed price from the start
- Senior engineers only (10+ years experience)
- OpenAPI docs generated as we build
- Automated tests with 90%+ coverage
- CI/CD on GitHub Actions or GitLab CI
- Full source code ownership
Our API development process
We follow a 4-phase process that de-risks your investment.
Every project starts with a discovery call where we learn your domain, users, and constraints. Then we move into the Roadmap phase.
The Roadmap phase takes 2 weeks and costs $5K. You get a detailed API specification, data model, security plan, and a fixed price for the full build.
What ships with every API
You own everything we build. No black boxes, no vendor lock-in.
When IRPR builds your REST API, you get more than just code. You get a complete production system that your team can run and modify.
We ship source code in your GitHub or GitLab repo, a CI/CD pipeline, infrastructure as code (Terraform), and a monitoring dashboard.
- Source code in your private repo (GitHub/GitLab)
- OpenAPI 3.0 specification
- Postman collection with all endpoints
- Automated test suite (unit + integration + load)
- CI/CD pipeline (GitHub Actions or GitLab CI)
- Infrastructure as code (Terraform for AWS)
- Datadog monitoring and Sentry error tracking
- Deployment playbook and runbook
- 30-day warranty and 2-week knowledge transfer
What we ship in this practice.
SaaS platform API for subscription management
Built a REST API for a B2B SaaS company that manages 50,000+ subscriptions. The API handles billing via Stripe, user provisioning via SCIM, and analytics via Snowflake. Reduced manual billing errors by 90%. Tech stack: FastAPI, PostgreSQL, Stripe, Redis.
Healthcare API for EHR integration
Designed a HIPAA-compliant REST API that connects a tele-health platform to 3 major EHR systems (Epic, Cerner, Athena). Handles 1 million patient records with AES-256 encryption. Tech stack: Node.js, FHIR, AWS KMS, PostgreSQL.
Fintech API for payment processing
Built a PCI-DSS Level 1 compliant REST API for a payment gateway. Processes 10,000 transactions per minute with idempotency keys and webhook retries. Reduced chargebacks by 40%. Tech stack: Go, Stripe, Plaid, AWS Lambda.
Ecommerce API for multi-vendor marketplace
Created a REST API for a marketplace with 500+ vendors. Manages product catalogs, inventory, orders, and payouts. Integrated with Shopify and Magento. Increased vendor onboarding speed by 60%. Tech stack: Next.js, PostgreSQL, Stripe Connect, Redis.
Real estate API for MLS integration
Developed a REST API that aggregates data from 20+ MLS sources. Supports property search with 50+ filters, lead capture, and CRM sync. Reduced data latency from 24 hours to 15 minutes. Tech stack: Node.js, RetS, MongoDB, AWS Elasticsearch.
Logistics API for real-time tracking
Built a REST API for a logistics company that tracks 5,000+ shipments daily. Integrates with 3PL providers via EDI and provides real-time ETAs via Google Maps API. Reduced support tickets by 70%. Tech stack: FastAPI, PostgreSQL, Redis, AWS SQS.
Why teams hire us.
Fixed price, not hourly
Every API project gets a fixed quote after the 2-week Roadmap phase. No hourly billing, no surprise invoices, no scope creep. You know the cost before we write a line of code.
Senior engineers only
Every engineer on your project has 10+ years of experience. No juniors, no offshore teams, no handoffs. The same team that designs your API also builds and deploys it.
8-12 week delivery
We ship production-ready APIs in 8-12 weeks. Our process is optimized for speed without cutting corners. 98% of our projects deliver on time.
Full code ownership
You own every line of code. We put it in your repo from day one. No proprietary frameworks, no black boxes, no vendor lock-in. Your team can maintain it from day one.
Enterprise compliance ready
We build APIs that pass HIPAA, PCI-DSS, and SOC 2 audits. We use encryption at rest and in transit, audit logging, and role-based access control by default.
Post-launch support
Every project includes a 30-day warranty and 2-week knowledge transfer. We stay on Slack for bug fixes and questions. Optional ongoing support at $150/hour.
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.