Custom API Development StudioAPI Development
We build custom APIs for your product. Ship in 8-12 weeks with a fixed price.
IRPR builds custom API development studios that design, build, and scale RESTful and GraphQL APIs. We use Node.js, Python, Go, and Postgres to deliver fast, secure endpoints.
We ship production-grade APIs in 8-12 weeks with a fixed price starting at $80K. Our APIs meet HIPAA, PCI-DSS, and SOC 2 compliance out of the box.
Founders building SaaS products who need a scalable API backbone. Enterprise teams migrating from legacy systems to microservices. Healthcare startups requiring HIPAA-compliant data exchange. Fintech companies that need PCI-DSS certified payment APIs.
Types of software we ship.
REST API Development
Versioned REST endpoints with OpenAPI 3.0 specs. Deploy on AWS API Gateway with auto-scaling.
GraphQL API Development
Flexible GraphQL APIs with Apollo Server and schema stitching. Query only what you need.
gRPC API Development
High-performance gRPC APIs with protobuf serialization. Ideal for microservices communication.
Webhook System
Event-driven webhook processors with retry logic and delivery receipts. Integrate Slack, Stripe, and more.
API Gateway
Centralized API gateway with rate limiting, authentication, and logging. Built on Kong or AWS API Gateway.
Microservices API
Distributed API architecture with service mesh, circuit breakers, and container orchestration (Kubernetes).
Real-Time API (WebSocket)
Live data streaming with WebSocket and Socket.IO. Used for chat, notifications, and live dashboards.
Third-Party API Integration
Unified integration layer for 50+ services including Salesforce, Stripe, Twilio, and HubSpot.
We build for every business type.
SaaS companies
Healthcare
Fintech
Ecommerce
Real estate
What a Custom API Development Studio Delivers
You need an API that scales, passes audits, and integrates with your existing stack. IRPR ships that every time.
Our custom API development studio focuses on building APIs that are secure, documented, and production-ready. We design every endpoint with error handling, rate limiting, and logging built in. Each API includes an OpenAPI 3.0 spec and a Postman collection so your team can start testing immediately.
We also handle compliance requirements up front. If you need HIPAA, PCI-DSS, or SOC 2, our team includes those controls in the design phase. This approach has helped 200+ clients launch APIs that pass audits on the first attempt.
Why IRPR Beats a Generic Dev Shop
Most API development projects fail due to scope creep, poor documentation, or missed deadlines. IRPR fixes all three.
Generic agencies quote hourly rates and vague timelines. They often lack compliance experience, leaving you to fix security gaps later. Their documentation is minimal, and you don't own the full codebase.
IRPR uses fixed pricing, strict phase gates, and documented deliverables. We assign senior engineers who have built 200+ APIs. You own everything, and we include 12 months of support.
- No fixed pricing
- Unknown timelines
- No compliance expertise
- Poor documentation
- No post-launch support
- Code not owned by you
- Fixed price from $80K
- 8-12 week delivery
- HIPAA/PCI/SOC2 built-in
- OpenAPI documentation
- 1 year of support
- Full code ownership
Our 4-Phase API Development Process
We break every custom API project into four phases. Each phase ends with a deliverable you approve before moving on.
The process starts with a 2-week Roadmap phase where we define every endpoint, data model, and compliance requirement. You get a fixed price and timeline before any development begins.
Then we design, build, and launch your API with full documentation, monitoring, and CI/CD. Your team is involved in every review.
What Ships With Every Custom API
You get a complete, production-ready API package — not just code.
Every API project includes everything you need to run, maintain, and scale your integration. No hidden work or open questions after launch.
- Source code in your Git repository
- CI/CD pipeline on GitHub Actions
- Sentry error tracking
- CloudWatch monitoring dashboard
- OpenAPI 3.0 specification
- Postman collection with examples
- Load testing report (k6 or Artillery)
- Security audit results (OWASP top 10)
- Deployment scripts (Terraform or CDK)
- 12 months of post-launch support
What we ship in this practice.
Patient Data Exchange API
Reduced data entry errors by 40% using HL7 FHIR standard. Node.js, PostgreSQL, AWS, HIPAA compliance.
Payment Gateway Integration API
Processed 10,000 transactions per day with 99.99% uptime. Python, Django, Stripe, PCI-DSS.
MLS Data Sync API
Synced 500,000 property listings across three platforms daily. GraphQL, Ruby on Rails, Redis, MLS compliance.
Inventory Management API
Cut order fulfillment time from 2 hours to 15 minutes. Go, PostgreSQL, RabbitMQ, EDI compliance.
Student Enrollment API
Handled 50,000 concurrent users during registration period. Next.js, Node.js, MongoDB, FERPA compliance.
Marketing Automation API
Integrated 10 SaaS tools with one unified endpoint. Express.js, Redis, Stripe, SOC 2.
Why teams hire us.
Fixed price, not hourly
Every API project gets a fixed quote in the Roadmap phase (week 2). No hourly billing means no surprise invoices. Average project $80K-$250K.
Senior engineers only
Our team averages 8+ years of backend development experience. No junior engineers on client projects. We assign a dedicated lead architect.
Compliance built in
We handle HIPAA, PCI-DSS, SOC 2, and GDPR from day one. Your API passes audits faster because compliance is part of the design, not an afterthought.
Production-ready documentation
Every API ships with an OpenAPI 3.0 spec, Postman collection, and interactive Swagger UI. Your developers start integrating immediately.
99.9% uptime guarantee
We deploy APIs on AWS with auto-scaling and multi-region redundancy. Our monitoring stack catches issues before users notice.
Full code ownership
You own the entire codebase, all designs, and all IP. No licensing fees, no locked-in contracts. We give you the keys to your infrastructure.
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.