Best API Development AgencyAPI Development
We build APIs that scale without the technical debt. 200+ APIs shipped for fintech, healthcare, and SaaS companies.
IRPR builds APIs for applications that need to connect, scale, and stay secure. We use Node.js, Go, Python, and frameworks like Express, FastAPI, and Apollo GraphQL to design RESTful and GraphQL APIs.
Each project ships with a documented API specification (OpenAPI 3.0), automated testing (Postman/Newman), and a CI/CD pipeline. Delivery takes 8-12 weeks. Pricing is fixed: $80K-$250K per project. Compliance included: HIPAA, PCI-DSS, SOC 2 type II.
We work with CTOs at Series A startups who need a production-grade API for their SaaS product. Product managers at healthcare companies who require HIPAA-compliant APIs for patient data exchange. Engineering leads at fintech firms who need PCI-DSS certified payment APIs. And enterprise architects at logistics companies building microservice-based integrations.
Types of software we ship.
REST API Development
RESTful APIs using JSON, HTTP methods, and OpenAPI specs. Ideal for CRUD-heavy apps and public-facing endpoints.
GraphQL API Development
GraphQL APIs using Apollo or Relay. Single endpoint, flexible queries, real-time subscriptions with WebSockets.
Microservice API Architecture
Decoupled microservice APIs using gRPC or REST. Service discovery, load balancing, and message queues (RabbitMQ, Kafka).
WebSocket API Development
Real-time APIs for chat, live dashboards, and streaming. Built with Socket.IO, ws, or WebSockets on AWS API Gateway.
Payment API Integration
Stripe, Braintree, or custom payment gateways. PCI-DSS compliant tokenization and idempotent endpoints.
Third-Party API Integration
Connect to Salesforce, HubSpot, Slack, or Zoom. OAuth 2.0 flows, rate limiting, and error handling.
API Gateway and Management
API gateways with Kong, AWS API Gateway, or NGINX. Authentication, rate limiting, caching, and monitoring.
Internal API Development
Private APIs for internal services and B2B systems. Designed for high throughput and low latency with load testing.
We build for every business type.
Healthcare
Fintech
SaaS
Ecommerce
Logistics and Transportation
Why IRPR is the best API development agency
We ship production APIs with measurable results.
Our APIs power applications across 50+ countries. Each API is built with automated load testing (k6) and achieves 99.9% uptime.
We have shipped over 200 APIs. 98% of projects delivered on time. Average project delivery: 10 weeks. Pricing starts at $80K.
How we differ from other API agencies
Most agencies talk about quality. We deliver it in writing.
Generic dev shops often start coding without a spec. They change requirements mid-project and bill hourly. You end up with undocumented, unscalable code.
IRPR starts with a Roadmap phase in week 2. You get a fixed quote, a detailed API spec (OpenAPI), and a project plan. No surprises. No hourly billing.
- No API specification before coding
- Hourly billing with no cap
- No automated testing
- No CI/CD for API deployments
- No documentation or versioning
- No compliance expertise (HIPAA, PCI)
- OpenAPI spec created in week 2
- Fixed price agreed in Roadmap phase
- Automated tests (Postman, Jest, k6)
- CI/CD pipeline with GitHub Actions
- Versioned API docs (ReadMe, Stoplight)
- Built for HIPAA, PCI-DSS, SOC 2
Our API development process
From idea to deployed API in 8-12 weeks.
We follow a four-phase process that eliminates rework. Every phase has a clear deliverable.
What ships with every API project
Everything you need to maintain and scale your API.
We deliver more than code. Each project includes documentation, infrastructure, and monitoring.
- Source code in your private GitHub/GitLab repo
- OpenAPI 3.0 specification (YAML/JSON)
- Postman collection with sample requests
- Automated unit and integration tests (Jest, Mocha)
- Load testing scripts (k6, Artillery)
- CI/CD pipeline (GitHub Actions, GitLab CI)
- Deployment to AWS/GCP/Azure with Terraform
- API documentation hosted via ReadMe or Stoplight
- Monitoring and alerting (Sentry, Datadog)
- Security audit report (OWASP Top 10)
What we ship in this practice.
Healthcare Telehealth API
Built a HIPAA-compliant REST API for a telemedicine platform. Reduced patient data exchange latency from 2 seconds to 200ms. Tech stack: FastAPI, PostgreSQL, Twilio, AWS ECS.
Fintech Payment Processing API
Developed a PCI-DSS Level 1 certified payment API for a neobank. Handles 50,000 transactions per day with 99.99% uptime. Tech stack: Node.js, Stripe Connect, Redis, Google Cloud.
SaaS Webhook Integration API
Created a webhook API for a CRM platform to integrate with 20+ third-party services (Slack, Salesforce, HubSpot). Reduced integration time for new partners by 80%. Tech stack: Go, Kafka, MongoDB, Kubernetes.
Ecommerce Product Catalog API
Designed a GraphQL API for a multi-vendor marketplace. Queries serve product data to 1 million daily users. Response times under 50ms. Tech stack: Apollo GraphQL, Elasticsearch, Node.js, AWS Lambda.
Logistics Real-Time Tracking API
Built a WebSocket-based tracking API for a delivery fleet. Provides real-time GPS updates every 5 seconds. Supports 10,000 concurrent connections. Tech stack: Socket.IO, Redis Pub/Sub, Node.js, Docker.
EdTech Student Portal API
Developed a RESTful API for a student information system. Integrated with 3rd party LMS (Canvas, Moodle) and FERPA compliant. Reduced manual data entry by 12 hours per week. Tech stack: Python Django REST Framework, PostgreSQL, Celery.
Why teams hire us.
Fixed price, not hourly
You get a fixed quote after the Roadmap phase (week 2). No hourly billing. No surprise overages. For example, an API for a fintech startup cost $120K flat.
Senior engineers only
Every project is staffed with engineers who have 8+ years of experience. No junior developers. Your API is built by the same team start to finish.
API-first design
We write an OpenAPI spec before any code. You approve the endpoints, schemas, and auth flows. No rework later.
Compliance built in
We build for HIPAA, PCI-DSS, SOC 2, and FERPA from day one. No retrofitting. For example, a healthcare API passed HIPAA audit on first try.
Full ownership
You own the source code, the documentation, and the infrastructure. We don't use proprietary code. You can deploy anywhere.
98% on-time delivery
We have shipped 200+ APIs. 98% were delivered on schedule. Average timeline 10 weeks. We plan for delays upfront so you don't wait.
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.