Premium Custom API Development PartnerCustom API
Your premium custom API development partner for mission-critical integrations. We ship RESTful and GraphQL APIs with 99.9% uptime in 8-12 weeks.
IRPR builds custom APIs for B2B platforms, SaaS products, and enterprise systems. Our APIs use Node.js, GraphQL, PostgreSQL, Redis, and Docker with automated CI/CD pipelines.
Each API project ships with production-grade infrastructure, API documentation via Swagger, and monitoring with Datadog. Delivery takes 8-12 weeks with fixed pricing from $80K to $250K. All projects meet HIPAA, PCI-DSS, or SOC 2 compliance requirements.
We work with CTOs building microservices architectures, product managers integrating third-party payment gateways, founders launching API-first platforms, and compliance officers needing auditable data pipelines.
Types of software we ship.
RESTful API
RESTful APIs designed for enterprise scalability using Express.js and AWS API Gateway. Handles 10,000+ requests per second with auto-scaling.
GraphQL API
GraphQL APIs with Apollo Server and Nexus for flexible data queries. Reduces over-fetching by 40% compared to REST.
Webhook System
Event-driven webhook systems using Node.js and Redis for reliable delivery. Guarantees 99.9% delivery with retry logic and logging.
API Gateway
API gateways using Kong or AWS API Gateway for rate limiting, authentication, and routing. Centralizes security for microservices.
Data Aggregation API
Data aggregation APIs that combine multiple sources using Apache Kafka and PostgreSQL. Delivers unified data in real-time.
Authentication API
Authentication APIs implementing OAuth2, SAML, and JWT with Auth0 integration. Supports SSO for enterprise tenants.
Payment Processing API
Payment processing APIs integrated with Stripe and Plaid for PCI-compliant transactions. Handles recurring billing and refunds.
AI/ML API Endpoint
AI/ML API endpoints using TensorFlow Serving or FastAPI for model inference. Achieves sub-100ms latency for production use.
We build for every business type.
Fintech
Healthcare
SaaS
Ecommerce
Enterprise
Why choose a premium custom API development partner
Statistics that prove our approach works
IRPR has delivered over 200 custom APIs for clients in 50+ countries. Our APIs maintain 99.9% uptime with average build time of 12 weeks.
Every API project includes automated testing, CI/CD pipelines, and real-time monitoring. We guarantee delivery on time and on budget.
Premium vs generic API development
Here's how IRPR differs from typical API shops
Generic agencies use boilerplate code and shared infrastructure. They often deliver incomplete migrations or leave security gaps.
IRPR builds each API from scratch for your exact use case. We include end-to-end encryption, database indexing, and full test coverage.
- Uses open source templates
- No load testing
- No documentation
- Hourly billing
- No security review
- No uptime guarantee
- Custom architecture from scratch
- Load testing with k6
- Full Swagger documentation
- Fixed price contract
- Security audit and penetration test
- 99.9% uptime SLA
Our API development process
Four phases to deliver your premium custom API
Phase 1: Discovery and specification (week 1-2). We map all endpoints, data models, and security requirements.
Phase 2: Rapid prototyping (week 3-4). We build a working API with core functionality for early feedback.
What you get with every API project
No surprises, just deliverables
- Source code in private GitHub repo
- Swagger/OpenAPI documentation
- CI/CD pipeline with GitHub Actions
- Postman collection for testing
- Sentry error tracking setup
- Datadog monitoring dashboard
- Database schema migration scripts
- Load test results report
- Security audit report
- One-year warranty on defects
What we ship in this practice.
Payment Integration API for Fintech SaaS
Built a PCI-compliant API connecting Stripe and Plaid for a fintech platform. Reduced transaction failure rates by 25% and added support for 15+ payment methods. Tech: Node.js, PostgreSQL, Stripe API, Plaid API.
Healthcare Data Exchange API
Developed a FHIR-compliant API for a telemedicine provider to exchange patient records with hospitals. Eliminated 12 hours of manual data entry per week. Tech: Python, FastAPI, HL7 FHIR, AWS HealthLake.
Real-time Inventory API for Ecommerce
Created a GraphQL API that syncs inventory across 3 warehouses and 2 ecommerce platforms (Shopify and Magento). Reduced stock discrepancies by 90%. Tech: Node.js, GraphQL, PostgreSQL, Redis.
SaaS Multi-Tenant Authentication API
Designed an OAuth2-based authentication API for a B2B SaaS with support for SAML SSO on 100+ enterprise tenants. Onboarded 3 new enterprise clients per month. Tech: Node.js, Auth0, PostgreSQL, JWT.
Logistics Route Optimization API
Built a routing API using Google Maps API and custom algorithms to optimize delivery routes. Cut delivery times by 15% and reduced fuel costs by $50,000/year. Tech: Python, Flask, Google Maps API, PostGIS.
Media Content Delivery API
Developed a CDN-backed API for a streaming platform handling 50,000 concurrent users. Achieved sub-100ms latency and 99.99% uptime. Tech: Node.js, AWS CDN, Redis, MongoDB.
Why teams hire us.
Fixed price, not hourly
We quote a fixed price during the Roadmap phase. No hourly billing means you know the cost upfront and never face surprise invoices.
8-12 week delivery
From kickoff to production deployment in 8-12 weeks. Our v2 methodology ensures we stay on schedule with weekly demos and milestones.
Full code ownership
You own everything we build. Source code, documentation, and deployment scripts are transferred to your repository. No lock-in.
Compliance built in
We design for HIPAA, PCI-DSS, or SOC 2 from day one. Our infrastructure uses encrypted databases and audit logs to pass compliance audits.
Senior engineers only
No offshore teams. Every project is staffed with US-based senior engineers with 10+ years of experience in API development.
One-year warranty
After go-live, we fix any defects for free within one year. We also include monitoring and alerts to catch issues before they affect users.
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.