Professional Custom API Development CompanyAPI Development
We build APIs that move data securely between your systems. 200+ products shipped with 99.9% uptime.
IRPR designs and builds custom APIs for web and mobile applications. We use Node.js, Python, Go, and serverless frameworks (AWS Lambda, Cloudflare Workers) to create RESTful and GraphQL endpoints.
Each project ships with a documented API specification (OpenAPI 3.0), automated tests, and monitoring dashboards. Typical timeline is 8-12 weeks for a production-ready API, priced between $80K and $250K depending on complexity and compliance needs (HIPAA, PCI-DSS, SOC 2).
We work with CTOs launching SaaS platforms, product managers integrating third-party services, healthcare startups requiring HIPAA-compliant data exchange, and fintech companies needing PCI-level payment APIs.
Types of software we ship.
REST API development
Build stateless RESTful APIs using Express.js or Fastify. Includes versioning, rate limiting, and OpenAPI documentation.
GraphQL API development
Create flexible GraphQL APIs with Apollo Server. Resolve complex data relationships and reduce over-fetching.
Microservices API
Develop APIs for microservice architectures using gRPC or message queues (RabbitMQ, Kafka). Ensures loose coupling.
Webhook integration
Build webhook endpoints to receive and process events from Stripe, Shopify, or Slack. Includes retry logic and logging.
API gateway setup
Configure API gateways (AWS API Gateway, Kong) for routing, authentication, and throttling across multiple services.
Third-party API integration
Integrate external APIs (Salesforce, HubSpot, Twilio) with custom middleware for data synchronization.
Real-time API (WebSocket)
Build real-time APIs using WebSocket or Server-Sent Events for live updates in dashboards or chat.
Data API (for analytics)
Create read-optimized APIs for analytics dashboards using PostgreSQL views or Elasticsearch aggregations.
We build for every business type.
SaaS platforms
Healthcare
Fintech
Ecommerce
Enterprise
Custom API Development Services
We design and build APIs that are secure, scalable, and documented.
Our APIs are built with industry-standard protocols (REST, GraphQL, gRPC) and include OpenAPI specs, authentication (OAuth 2.0, JWT), and error handling. We use automated testing (Postman, Jest) to ensure reliability.
We also provide API versioning strategies, rate limiting, and monitoring via Datadog or Sentry. Each project includes a deployment pipeline to AWS or GCP.
Generic Dev Shop vs IRPR
Not all API development teams deliver the same quality.
Many agencies build APIs that lack documentation, fail under load, or ignore security. They often use outdated frameworks and leave you with untestable code.
IRPR follows strict API design guidelines, enforces code reviews, and delivers production-ready endpoints with monitoring built in.
- No API documentation
- No automated tests
- No rate limiting
- No monitoring
- No versioning
- No security audit
- OpenAPI 3.0 spec shipped with code
- 100% test coverage for endpoints
- Rate limiting and throttling configured
- Datadog/Sentry monitoring
- Semantic versioning strategy
- OWASP security review
Our API Development Process
We follow a structured approach to deliver APIs on time and on budget.
Our process starts with a 2-week Roadmap phase where we define endpoints, data models, and integration points. We provide a fixed price and timeline upfront.
Then we build in 2-week sprints, with weekly demos and continuous deployment. You see working endpoints from week 3.
What Ships with Your API
Every API project includes these deliverables.
You get full source code, documentation, and deployment scripts. No black boxes.
- Source code in your private repo (GitHub/GitLab)
- OpenAPI 3.0 specification (JSON/YAML)
- Automated test suite (Postman/Jest)
- CI/CD pipeline (GitHub Actions)
- Docker containerization
- Monitoring dashboard (Datadog/Sentry)
- Deployment runbook
- Rate limiting configuration
- Authentication (OAuth 2.0 / JWT)
- API versioning strategy
What we ship in this practice.
Payment Processing API for Fintech Startup
Built a PCI-compliant API for a payment gateway using Stripe Connect and Node.js. Reduced transaction failure rate by 40% and enabled 100ms response times.
Patient Data Exchange API for Telemedicine
Developed a HIPAA-compliant FHIR API for a telemedicine platform using Python and AWS Lambda. Automated lab result ingestion, saving 15 hours per week.
Order Sync API for Ecommerce Brand
Created a REST API to sync orders between Shopify and a custom ERP using Node.js and PostgreSQL. Eliminated manual data entry, saving 20 hours per week.
Real-Time Analytics API for SaaS
Built a WebSocket API for live dashboard updates using GraphQL subscriptions and Redis. Handled 10,000 concurrent connections with sub-50ms latency.
Property Listing API for Real Estate Platform
Integrated MLS data via a custom API using Go and Elasticsearch. Reduced search response time from 2 seconds to 200ms.
Student Records API for EdTech
Developed a FERPA-compliant API for a learning management system using Django REST Framework and PostgreSQL. Enabled seamless data sharing between schools.
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.
Senior engineers only
Our team consists of senior developers with 10+ years of experience. No junior developers, no outsourcing.
Compliance built in
We build HIPAA, PCI-DSS, and SOC 2 compliant APIs. We include encryption, audit logs, and access controls by default.
Production-ready from day one
APIs ship with monitoring, error tracking, and rate limiting. You get a live dashboard and runbook.
Full ownership
You own the source code, documentation, and deployment scripts. No vendor lock-in.
Fast kickoff
We start within 1-2 weeks of signing. The Roadmap phase delivers a detailed plan and fixed price.
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.