Best Rest API Development ConsultantsRest API
We design and build custom REST APIs for your product. 200+ projects delivered on time, every time.
IRPR builds REST APIs for startups and enterprises using Node.js, Express, Django, FastAPI, PostgreSQL, MongoDB, Redis, and Stripe. Our APIs handle thousands of requests per second with 99.9% uptime.
Every project ships in 10-14 weeks with fixed pricing from $80K to $250K. We handle compliance from day one: HIPAA for healthcare, PCI-DSS for fintech, SOC 2 for SaaS. No hidden costs, no scope creep.
Our buyers are CTOs scaling their platform, tech founders launching an MVP, product managers integrating third-party services, and engineering leads who need senior API architects without building an in-house team.
Types of software we ship.
Payment Gateway API
Process payments with Stripe, Braintree, or Square. Built for PCI-DSS compliance and 99.99% uptime.
CRM Integration API
Sync data with Salesforce, HubSpot, or Zoho. Handles bulk import and real-time webhooks.
Real-Time Data Streaming API
Stream live data using WebSockets and Kafka. Used for dashboards, alerts, and live feeds.
Ecommerce Platform API
Power product catalogs, carts, orders, and fulfillment. Integrates with Shopify, Magento, and custom backends.
Healthcare FHIR API
Build HL7 FHIR endpoints for EHR integration. HIPAA compliant with audit logging and role-based access.
Social Media API
Implement user feeds, notifications, and messaging. Handles 10K+ concurrent connections per node.
AI Model Serving API
Deploy ML models behind REST endpoints using TensorFlow Serving and TorchServe. Sub-50ms latency.
IoT Device Management API
Manage thousands of connected devices with MQTT brokers and REST gateways. Includes firmware OTA updates.
We build for every business type.
Professional Services
Healthcare
Fintech
Ecommerce
SaaS
Why Hiring the Best Rest API Development Consultants Matters
Your API is the backbone of your product. A poorly designed API costs time, money, and trust.
A bad REST API leads to slow responses, broken integrations, and security holes. IRPR has built 200+ APIs that handle millions of requests per month without failures. We use code generators, automated testing, and continuous integration to ship reliable endpoints.
Our consultants have architected APIs for companies processing over $500M annually. We design for scalability from day one using caching layers (Redis), connection pooling, and database indexing. Every API ships with real-time monitoring via Sentry and Datadog.
Generic Dev Shop vs IRPR: The API Development Difference
Not all API consultants deliver the same quality. See the difference.
Many dev shops hand over a black box API with no docs and no monitoring. IRPR gives you full ownership, automated tests, and observability from day one.
We use a fixed-price model with clear milestones. You never face surprise invoices or scope creep. Our senior engineers work in your time zone overlap hours, not offshore random shifts.
- Hourly billing with no cap
- Junior developers on your project
- No compliance guidance
- No API documentation delivered
- Manual deployments, no CI/CD
- Code stays on their servers
- Fixed price from $80K
- Senior engineers only (15+ yrs)
- HIPAA, PCI-DSS, SOC 2 out of the box
- OpenAPI docs auto-generated
- GitHub Actions CI/CD pipeline
- Full source code in your repo
Our API Development Process: From Idea to Production
Every project follows a structured 4-phase framework designed for speed and quality.
We start with a discovery sprint to map your data model, use cases, and compliance needs. Then we produce a detailed roadmap with mock endpoints and a timeline estimate.
The build phase uses test-driven development with 90%+ code coverage. We deploy to staging within 6 weeks, gather feedback, then ship to production with a full runbook.
What Ships with Every REST API Project
Every deliverable is designed to make your team self-sufficient after launch.
You get the source code, infrastructure as code, and runbooks. No vendor lock-in. No hidden dependencies.
Our APIs come with Postman collections, Swagger/OpenAPI specs, and integration tests for common scenarios. Everything is documented and repeatable.
- Source code in your GitHub repository
- CI/CD pipeline using GitHub Actions
- Sentry error tracking and performance monitoring
- OpenAPI 3.0 documentation auto-generated
- Unit tests with 90%+ coverage
- Integration tests for critical flows
- Postman collection with examples
- Docker Compose for local development
- Deployment runbook with rollback steps
- Prometheus + Grafana dashboards for production
What we ship in this practice.
Payment Processing API for a Fintech Startup
Built a REST API that processes 50K daily transactions with Stripe and Plaid. Reduced manual reconciliation by 15 hours per week. Tech stack: Node.js, Express, PostgreSQL, Redis, Stripe API.
Telemedicine Appointment API for a Healthcare Platform
Developed HIPAA-compliant FHIR endpoints for scheduling, video calls, and prescriptions. Handles 10K appointments per day with sub-200ms response times. Tech stack: Django, FastAPI, PostgreSQL, WebRTC.
Inventory Management API for an Ecommerce Brand
Created a real-time inventory API that syncs Shopify, warehouses, and 3PL systems. Cut stockout errors by 40%. Tech stack: Python, FastAPI, Redis, Celery, Shopify API.
Customer Data API for a SaaS CRM
Designed a RESTful API serving 500+ enterprise customers with custom fields and webhook subscriptions. Achieved 99.99% uptime over 12 months. Tech stack: Go, PostgreSQL, Kafka, GraphQL (REST wrapper).
IoT Fleet Management API for a Logistics Company
Built an API that ingests data from 5,000+ GPS trackers every 30 seconds. Reduced fleet downtime by 25% through predictive alerts. Tech stack: Node.js, MQTT, InfluxDB, Redis Streams.
Social Feed API for a Media Platform
Developed a high-throughput API serving 2M daily active users with personalized feeds and notifications. Latency under 100ms at peak. Tech stack: Django, PostgreSQL, Elasticsearch, Redis.
Why teams hire us.
Fixed price, not hourly
Every API project gets a fixed quote in the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges. Your budget is locked from day one.
Senior engineers only
Every consultant has 15+ years of experience building APIs at scale. No juniors, no outsourcing. You work directly with the architects who design your system.
Async-first, time zone overlap
We work asynchronously but guarantee 4 hours of daily overlap with your time zone (US/Europe). You get daily standup summaries and weekly video demos.
Compliance built in, not bolted on
We start with HIPAA, PCI-DSS, or SOC 2 requirements before writing any code. Every endpoint is designed with audit logs, encryption, and role-based access from the start.
Full code ownership, no lock-in
You own every line of code, every config file, and every deployment script. We push to your repository with public IP and CI/CD pipelines. You can fire us anytime with zero data loss.
Production support for 30 days
After launch, we provide 30 days of production support with SLA of 4-hour response time. We fix bugs, optimize performance, and train your team on the API before handover.
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.