Best Custom API Development ServicesAPI Development
We build APIs that ship in 8-12 weeks with fixed pricing. No hourly surprises, no scope creep.
IRPR builds custom APIs for web and mobile apps using Node.js, Python, Go, and GraphQL. We design for scale and security from day one with automated testing and CI/CD pipelines.
Each API ships in 8-12 weeks with a fixed price between $80K and $250K. We comply with HIPAA, PCI-DSS, and SOC 2 standards, and every project includes auto-generated OpenAPI documentation, Postman collections, and monitoring dashboards.
CTOs scaling their SaaS need a data layer that handles 1M+ requests. Fintech founders need PCI-compliant payment APIs. Healthcare companies need HIPAA-compliant FHIR integrations. Product managers need APIs that integrate with Salesforce and Stripe without breaking.
Types of software we ship.
REST API development
Build RESTful APIs with Node.js or Python. Includes JWT auth, rate limiting, and OpenAPI 3.0 specs.
GraphQL API development
Single endpoint GraphQL APIs with Apollo Server. Resolver caching, data loaders, and schema-first design.
Microservices API
Decouple your monolith into microservices with gRPC, RabbitMQ, and Docker. Independent deployable units.
API integration services
Connect your platform to Stripe, Salesforce, HubSpot, Twilio, or any third party. We handle OAuth and webhooks.
API security and compliance
PCI-DSS, HIPAA, SOC 2 compliance built in. TLS 1.3, encryption at rest, and automated vulnerability scans.
API documentation and testing
Auto-generated OpenAPI docs, Postman collections, and load testing with k6. Every endpoint tested before delivery.
Real-time API (WebSocket)
WebSocket and SSE APIs for live updates. Used for chat, inventory sync, and real-time dashboards.
API gateway and management
Kong or AWS API Gateway setup. Rate limiting, caching, authentication, and analytics dashboards.
We build for every business type.
Finance and Banking
Healthcare
E-commerce
SaaS
Logistics and Supply Chain
Why IRPR builds the best custom APIs
Our APIs handle millions of requests while keeping 99.9% uptime and full compliance.
Every API project at IRPR starts with a 2-week Roadmap phase where we define every endpoint, data model, and auth flow. This gives you a fixed price and a 8-12 week timeline before any code is written.
We use automated testing, continuous deployment, and real-time monitoring from day one. The result is an API that ships on time, stays online, and scales without rewrites.
IRPR vs. generic dev shops
Most shops build APIs that break under load. We build for production from day one.
Generic agencies often start coding without a fixed scope, leading to budget overruns and delayed releases. They skip security reviews and ship undocumented endpoints that no one can maintain.
IRPR gives you a fixed price, OpenAPI specs, automated CI/CD, and compliance checklists. Every project is built by senior engineers who have shipped 200+ products.
- vague scope with hourly billing
- one junior developer works alone
- no compliance audits
- no automated tests or CI/CD
- no documentation provided
- unexpected cost overruns
- fixed price after 2-week Roadmap
- team of 2-3 senior engineers
- HIPAA, PCI, SOC 2 compliance built in
- CI/CD pipeline on GitHub Actions
- auto-generated OpenAPI docs and Postman collections
- 98% on-time delivery record
How we build your custom API in 8-12 weeks
From roadmap to production with no surprises.
We follow a four-phase process that keeps every stakeholder aligned. Each phase has clear deliverables and a go/no-go milestone.
Security audits and load tests happen before any code reaches production. You get a production-ready API with full documentation and monitoring.
Every API project ships with these deliverables
No hidden items. Everything you need to run the API in production is included.
- Source code in your private GitHub/GitLab repo
- CI/CD pipeline on GitHub Actions or GitLab CI
- Auto-generated OpenAPI 3.0 documentation
- Postman collection with every endpoint
- Sentry error tracking configured
- Datadog or CloudWatch monitoring dashboards
- Load test results using k6
- Compliance checklist (HIPAA, PCI, or SOC 2)
What we ship in this practice.
Payment processing API for fintech startup
Handled 10K transactions per minute with PCI-DSS Level 1 compliance. Reduced payment failure rate from 4% to 0.5%. Tech: Go, PostgreSQL, Stripe Connect.
FHIR API for telemedicine platform
Integrated with Epic and Cerner. Cut patient data retrieval from 5 minutes to 3 seconds. Tech: Node.js, HL7 FHIR, AWS HealthLake.
Real-time inventory API for ecommerce brand
Synced stock across 3 warehouses with under 100ms latency. Zero overselling incidents in 6 months. Tech: WebSocket, Redis, MongoDB.
GraphQL API for SaaS analytics platform
Unified data from 5 separate sources. Cut dashboard load time by 60% and enabled custom query filters. Tech: GraphQL, Apollo, TimescaleDB.
REST API for logistics tracking system
Handled 1M tracking requests daily with 99.99% uptime. Eliminated manual tracking calls. Tech: Python, FastAPI, Docker, CloudFront.
Microservices API for media content platform
Broke monolith into 12 independently deployable services. Deployments dropped from 4 hours to 15 minutes. Tech: Kubernetes, RabbitMQ, gRPC.
Why teams hire us.
Fixed price, not hourly
Every project gets a fixed quote after the 2-week Roadmap phase. No hourly billing, no surprise invoices, no scope creep charges.
Senior engineers only
All IRPR engineers have 8+ years of production experience. We never use offshore juniors or outsource core development.
Compliance built-in, not bolted on
We deliver HIPAA, PCI-DSS, and SOC 2 compliant APIs. Every project includes a compliance checklist before go-live.
8-12 week delivery guarantee
From spec to production in 8-12 weeks. Our 98% on-time record comes from fixed scope, senior teams, and realistic planning.
Full documentation included
You get OpenAPI 3.0 specs, Postman collections, and deployment guides. Your team can maintain the API without us.
Long-term support available
We offer post-delivery support with a 4-hour SLA. Monthly retainer options start at $5K for ongoing maintenance and updates.
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.