Senior REST API Development PartnerREST API
Ship production-grade REST APIs in 8-12 weeks. Fixed pricing, OpenAPI docs, and full code ownership.
IRPR builds REST APIs using Node.js, Python (FastAPI), and Go, with OpenAPI 3.0 documentation for every endpoint. We design for high concurrency, low latency, and easy consumption by frontend teams.
Each project ships with production-ready code, CI/CD pipelines, and auto-generated API docs. Typical delivery is 12-14 weeks for a full API platform, with fixed pricing from $80K to $250K. We comply with HIPAA, PCI-DSS, and SOC 2 where required.
Startup CTOs needing a scalable API for their SaaS, enterprise IT directors replacing legacy SOAP APIs with REST, fintech companies requiring PCI-compliant payment APIs, and healthcare platforms needing HIPAA-compliant FHIR endpoints hire IRPR.
Types of software we ship.
Payment Gateway API
Process transactions with Stripe Connect or Braintree. Includes webhook handling, idempotency, and PCI-level security.
User Authentication API
Integrate Auth0, Firebase, or custom JWT flows. Supports OAuth2, MFA, and session management.
Data Synchronization API
Sync data between Salesforce, HubSpot, and custom systems using webhooks and scheduled jobs.
Social Media Publishing API
Post content to Facebook, Twitter, LinkedIn via their Graph APIs. Includes scheduling and analytics.
Inventory Management API
Manage stock across warehouses with real-time updates via Kafka. Integrates with Shopify and Netsuite.
Real-time Notifications API
Deliver push notifications via WebSockets, Firebase Cloud Messaging, and AWS SNS. Supports 100K concurrent connections.
Analytics Dashboard API
Expose aggregated metrics from ClickHouse or BigQuery. Endpoints return JSON for frontend charting libraries.
Machine Learning Inference API
Deploy models via TensorFlow Serving or SageMaker. Restful endpoints return predictions in under 100ms.
We build for every business type.
Fintech
Healthcare
E-commerce
SaaS
Logistics
Why choose a senior REST API development partner?
IRPR delivers production-ready APIs with measurable results.
Our senior engineers have built over 200 APIs for fintech, healthcare, and e-commerce companies. Every API ships with OpenAPI documentation, automated tests, and a dedicated CI/CD pipeline.
We guarantee 99.9% uptime and 8-12 week delivery. 98% of our projects finish on time and on budget, with no scope creep.
Senior partner vs generic dev shop
Most agencies hire juniors and charge hourly. IRPR is different.
Generic dev shops often assign junior developers, use hourly billing, and produce undocumented endpoints. They rarely include security audits or performance testing.
IRPR assigns senior engineers only, offers fixed pricing from the start, and ships complete OpenAPI docs, security scans, and load testing results.
- Junior developers on your project
- Hourly billing with surprise overages
- No API documentation delivered
- No security or penetration testing
- Scope creep with no clear boundaries
- Unclear timelines and missed deadlines
- Senior engineers averaging 10+ years
- Fixed price after Roadmap phase
- OpenAPI 3.0 docs shipped with code
- Automated OWASP scanning and code review
- Clear scope with Roadmap SOW
- 8-12 week delivery guarantee
How we build your REST API
Four phases deliver your API on time and on budget.
Every IRPR project follows the same proven process. Each phase has a clear deliverable and fixed timeline.
We adjust the build phase length based on your API complexity, but the majority of projects finish in under 12 weeks.
What ships with your REST API
Every project includes these deliverables as standard.
You get everything needed to run and maintain your API independently. No hidden extras, no license fees.
- Source code in your private GitHub repository
- CI/CD pipeline with GitHub Actions or CircleCI
- OpenAPI 3.0 documentation (Swagger UI and ReDoc)
- Unit and integration test suite (coverage >90%)
- Performance test results (k6 or Locust)
- Deployment playbook for AWS, GCP, or Azure
- Sentry error monitoring and APM setup
- Docker images with multi-stage builds
- Infrastructure as code (Terraform or Pulumi)
- Automated security audit report (OWASP ZAP)
What we ship in this practice.
Payment API for a Fintech Startup
Built a PCI-compliant payment API that processed $5M in transactions in month one. Tech stack: Node.js, PostgreSQL, Stripe Connect. Reduced fraud chargebacks by 40% with automated checks.
Patient Data API for Telehealth
Enabled real-time EHR integration, reducing manual data entry by 12 hours per week. Tech stack: FastAPI, FHIR, AWS HealthLake. Achieved HIPAA compliance with BAA in place.
Product API for an E-commerce Marketplace
Handled 10,000 requests per second during Black Friday with zero downtime. Tech stack: Go, Redis, PostgreSQL. Cut page load times by 60% using caching.
Analytics API for a SaaS Platform
Reduced report generation time from five minutes to three seconds. Tech stack: Python, ClickHouse, GraphQL. Supported dashboards for 500+ enterprise clients.
Inventory API for a Logistics Company
Synced inventory across five warehouses in real time, cutting stockouts by 30%. Tech stack: Node.js, Kafka, MongoDB. Handled 2 million SKU updates daily.
User API for a Real Estate Portal
Served one million users with sub-50ms response times. Tech stack: Go, PostgreSQL, Redis. Enabled seamless search and property listing updates.
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. No junior developers work on your API. Every line of code is reviewed by a peer.
OpenAPI documentation by default
Every endpoint ships with OpenAPI 3.0 specs. Your frontend team can start integration immediately using auto-generated client SDKs.
Security-first development
We include automated OWASP scanning and manual code review. APIs are PCI-DSS and HIPAA ready, with penetration testing on request.
Realistic timelines backed by data
Based on 200+ API projects, we estimate within 10% accuracy. 98% of projects deliver on time, and we communicate delays within the first week.
Full code ownership
You own every line of code. No licenses, no lock-in. We hand over source code, Docker images, and deployment scripts at project completion.
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.