Leading Custom API Development TeamAPI Development
We build APIs that your developers actually want to use. 8-12 week delivery, fixed price, senior engineers only.
IRPR is the leading custom API development team for companies that need production-grade APIs fast. We build REST, GraphQL, and gRPC APIs using Node.js, Go, Python, and Postgres. Every API includes automated testing, rate limiting, and detailed OpenAPI documentation.
We ship a production-ready API in 8-12 weeks with a fixed price starting at $80K. Our APIs are built for compliance: HIPAA for healthcare, PCI-DSS for fintech, SOC 2 for SaaS. We handle authentication, authorization, and integration with third-party services like Stripe, Twilio, and Salesforce.
Our clients are CTOs who need a reliable API for their SaaS platform, product managers launching a mobile app backend, and enterprise architects replacing legacy point-to-point integrations. We also work with startups building their first API for external developer consumption.
Types of software we ship.
REST API Development
Stateless, cacheable APIs with OpenAPI specs. Built with Express.js, Fastify, or Django REST Framework.
GraphQL API Development
Flexible query APIs with Apollo Server or Hasura. Includes resolver optimization and schema stitching.
gRPC API Development
High-performance, typed APIs using Protocol Buffers. Ideal for microservices and low-latency systems.
Third-Party API Integration
Connect your app to Stripe, Twilio, Salesforce, HubSpot, or 50+ other services. Includes error handling and retry logic.
API Gateway Development
Centralized gateways with Kong, Envoy, or AWS API Gateway. Handles auth, rate limiting, and request transformation.
Internal API Development
APIs for internal microservices communication. Includes service discovery, circuit breakers, and observability.
Public API / Developer Portal
Expose your API to third-party developers. Includes documentation, API keys, usage analytics, and developer onboarding.
Data API / ETL API
APIs that expose database queries or transform data. Built with PostgREST, Prisma, or direct SQL. Includes pagination and filtering.
We build for every business type.
SaaS and platforms
Healthcare and life sciences
Fintech and payments
Ecommerce and retail
Enterprise and internal tools
Why You Need a Leading Custom API Development Team
Your API is the foundation of every integration your customers and partners rely on.
A poorly designed API costs you developer hours, customer trust, and revenue. We see companies lose 3-6 months rebuilding APIs that were not designed for scale. IRPR builds APIs that handle 10,000 requests per second from day one, with proper error handling, versioning, and documentation.
Our APIs are built with security in mind. We implement OAuth 2.0, JWT, and API key authentication by default. Every endpoint is rate limited, logged, and monitored with Datadog or Sentry. We also include automated tests that cover 95% of code paths.
How IRPR Compares to Other API Teams
Not all API development teams deliver the same quality. Here is the difference.
Many agencies treat API development as a side project. They assign junior developers, use boilerplate code, and skip documentation. IRPR assigns a senior engineer with 10+ years of experience to every project. You get a dedicated architect who designs the API schema, security model, and deployment pipeline.
We also include a 30-day post-launch support window. If your team finds bugs or needs changes, we fix them at no extra cost. Our fixed pricing means you know the total cost before we write a single line of code.
- No API design review before coding
- Junior developers with no architecture experience
- No automated testing or documentation
- Hourly billing that encourages scope creep
- No post-launch support included
- Generic security practices, no compliance
- API design review in week 1 with your team
- Senior engineers with 10+ years experience
- 95% test coverage, OpenAPI docs included
- Fixed price from the Roadmap phase
- 30-day post-launch support at no extra cost
- HIPAA, PCI-DSS, SOC 2 compliance built in
Our API Development Process
We follow a 4-phase process that delivers a production-ready API in 8-12 weeks.
Every project starts with a 2-week Roadmap phase where we define the API contract, data model, and integration points. You get a detailed document with endpoints, authentication flow, and deployment plan. This phase costs a fixed $5,000 and is credited toward the full project.
After you approve the Roadmap, we build the API in 6-10 weeks. You see progress every week via a shared Slack channel and weekly demo. We deploy to staging after 4 weeks so you can start testing.
What Ships with Every API
Every API project includes these deliverables by default. No hidden costs.
When we finish your API, you get more than just code. You get a complete package that your team can run, modify, and scale without IRPR. We do not use black-box frameworks or proprietary tools.
All source code is in your GitHub or GitLab repository from day one. You own everything we build.
- Source code in your private GitHub or GitLab repo
- CI/CD pipeline with GitHub Actions or GitLab CI
- OpenAPI 3.0 specification (Swagger UI)
- Automated test suite with 95% coverage
- Docker containers and docker-compose for local dev
- Deployment scripts for AWS, GCP, or Azure
- Sentry error tracking and Datadog monitoring
- API documentation hosted on ReadMe or Stoplight
- Postman collection for manual testing
- 30-day post-launch support with Slack access
What we ship in this practice.
Patient Data API for Telehealth Platform
Built a HIPAA-compliant REST API that connects a telehealth app with 3 EHR systems (Epic, Cerner, Athenahealth). Reduced patient data retrieval time from 45 seconds to 200 milliseconds. Tech stack: Node.js, Postgres, FHIR, AWS Lambda.
Payment Processing API for Fintech Startup
Designed a PCI-DSS compliant API that processes 5,000 transactions per minute. Integrated with Stripe, Plaid, and a custom ledger system. Saved the client 6 months of development time. Tech stack: Go, Postgres, Redis, Stripe API.
Product Catalog API for Ecommerce Brand
Created a GraphQL API that serves product data to a React storefront and a mobile app. Reduced page load time by 60%. Handles 10 million product queries per day. Tech stack: Apollo Server, Postgres, Elasticsearch, Redis.
Multi-Tenant API for SaaS Platform
Built a SOC 2 compliant API with row-level security for a B2B analytics platform. Supports 500 tenants with isolated data. Reduced onboarding time from 2 weeks to 2 days. Tech stack: Postgres, Row-Level Security, GraphQL, AWS RDS.
MLS Data API for Real Estate Platform
Developed a REST API that aggregates MLS listings from 50+ sources into a single endpoint. Reduced data sync time from 4 hours to 15 minutes. Tech stack: Python, FastAPI, Postgres, Redis, Celery.
Student Data API for EdTech Platform
Built a FERPA-compliant API that syncs student records between a learning management system and a student information system. Eliminated 10 hours of manual data entry per week. Tech stack: Node.js, Postgres, GraphQL, AWS Lambda.
Why teams hire us.
Senior engineers only, no juniors
Every IRPR engineer has 10+ years of production experience. We do not staff juniors or outsource. Your API is built by someone who has shipped 20+ APIs before.
Fixed price, not hourly
You get a fixed quote after the Roadmap phase. No hourly billing, no surprise invoices. The price covers the entire project including testing, documentation, and deployment.
Compliance built in, not bolted on
We build HIPAA, PCI-DSS, SOC 2, and FERPA compliance into the API design from week 1. No retrofitting. We have shipped compliant APIs for 30+ healthcare and fintech clients.
Full ownership, no lock-in
You own all source code, documentation, and deployment scripts. No proprietary frameworks. No monthly license fees. You can take the API to any team after launch.
8-12 week delivery, on time
Our process is optimized for speed. 98% of our projects ship on time. We use weekly demos and a shared Slack channel so you never wonder about progress.
Post-launch support included
Every project includes 30 days of post-launch support. Your team gets direct Slack access to the engineer who built the API. No additional contracts or retainers needed.
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.