Experienced FastAPI Development FirmFastAPI Development
We build production-grade FastAPI backends in 12 weeks. Fixed pricing, full code ownership, and senior engineers only.
IRPR is an experienced FastAPI development firm. We build high-performance APIs for data-intensive applications using FastAPI with async support, SQLAlchemy 2.0, and Pydantic v2.
We ship production-ready backends in 12 weeks. Typical projects range from $80K to $150K. Every project includes CI/CD, automated testing, and HIPAA/PCI compliance where required.
Startup CTOs needing a scalable API for their MVP. Enterprise teams that require a FastAPI backend with strict security compliance. SaaS founders building multi-tenant APIs. Fintech and healthcare companies that need audit-ready code.
Types of software we ship.
RESTful API Backend
Full REST API with OAuth 2.0, rate limiting, and async database access using FastAPI, PostgreSQL, and Redis caching.
Microservices Architecture
Modular microservices with FastAPI, RabbitMQ message broker, and containerized deployment on Kubernetes.
Real-Time Data Streaming API
WebSocket-based real-time endpoints for live data feeds, using FastAPI's async capabilities with Kafka or Redis Pub/Sub.
Machine Learning Inference API
Deploy ML models as FastAPI endpoints with ONNX runtime, batch processing, and GPU support for low-latency predictions.
GraphQL API
GraphQL interface built with Strawberry and FastAPI, enabling flexible querying and subscription support.
E-Commerce Order Service API
Order management microservice with cart, checkout, and payment gateway integration using Stripe and FastAPI.
Authentication & Authorization Service
Standalone auth service with JWT, OAuth2, SAML SSO, and role-based access control using FastAPI security utilities.
Internal Admin Dashboard API
Admin backend APIs for dashboards, with role-based access, audit logging, and real-time metrics via WebSockets.
We build for every business type.
Healthcare & Life Sciences
Fintech & Financial Services
SaaS & Platform Companies
E-Commerce & Retail
Media & Content Platforms
Why choose an experienced FastAPI development firm
Our FastAPI projects ship 40% faster than with generalist teams.
We have shipped over 200 FastAPI projects for clients in 50+ countries. Each project uses our proven 4-phase process to eliminate rework and ensure on-time delivery.
Our senior engineers average 8+ years of Python experience. We build with FastAPI's async capabilities to handle 10,000+ concurrent requests from day one.
The difference between generic API shops and IRPR
Most agencies deliver broken APIs. We deliver production-ready backends.
Generic development shops often use Flask or Django without async support. They bill by the hour, leading to scope creep and delayed deadlines.
IRPR uses FastAPI with async by design, fixed pricing from the roadmap phase, and full code ownership. Our clients get maintainable, scalable APIs on time and on budget.
- Hourly billing causing scope creep
- No async support in Python
- Weak test coverage
- No CI/CD pipeline
- Code ownership unclear
- Slow response to production issues
- Fixed price from roadmap phase
- FastAPI with async for high concurrency
- 80%+ test coverage
- GitHub Actions CI/CD by default
- You own all source code
- 24-hour bug fix SLA
Our FastAPI development process
We follow a 4-phase process to ship your API in 12 weeks.
From concept to deployment, each phase has clear deliverables and continuous client feedback.
What ships with every FastAPI backend
Every project includes these deliverables by default.
No hidden extras. These are standard for all engagements.
- Source code in your private GitHub repo
- FastAPI application with async routes
- Pydantic models for request/response validation
- Unit tests with pytest (80% coverage+)
- Integration tests for critical endpoints
- CI/CD pipeline on GitHub Actions
- Docker Compose for local development
- API documentation via Swagger UI and ReDoc
- Database migration scripts (Alembic)
- Sentry error tracking integration
What we ship in this practice.
Telehealth Appointment Scheduling API
Built a HIPAA-compliant FastAPI backend for a national telehealth provider. Reduced appointment booking time by 60% using async WebSocket notifications. Tech stack: FastAPI, PostgreSQL, Twilio, Docker.
Payment Gateway Aggregator
Developed a PCI-DSS compliant FastAPI service that routes payments through multiple gateways. Handles 10,000+ transactions per minute with 99.99% uptime. Tech stack: FastAPI, Stripe, Redis, Kubernetes.
Multi-Tenant SaaS Backend
Created a FastAPI backend for a B2B SaaS platform supporting 500+ tenants. Implemented tenant isolation via dynamic schema switching and rate limiting. Reduced onboarding time from weeks to hours. Tech stack: FastAPI, PostgreSQL, Auth0, Celery.
E-Commerce Recommendations Engine
Built a real-time recommendation API using FastAPI and collaborative filtering. Increased average order value by 18% within 3 months. Tech stack: FastAPI, Redis, TensorFlow Serving, Kafka.
Real Estate MLS Data Sync
Designed a FastAPI service to sync MLS listings across multiple platforms. Reduced data sync time from 2 hours to 15 minutes using async task queues. Tech stack: FastAPI, RabbitMQ, PostgreSQL, ElasticSearch.
Content Delivery Network Optimizer
Developed a FastAPI API to dynamically route content requests based on geo-location. Lowered latency by 40% for a global media platform. Tech stack: FastAPI, Redis, CDN APIs, Prometheus.
Why teams hire us.
Fixed price, not hourly
Every project gets a fixed quote after a 2-week Roadmap phase. No hourly billing means no surprise invoices. Our average project runs $80K-$150K depending on scope.
12-week delivery guarantee
We ship production-ready FastAPI backends in 12 weeks. Our track record shows 98% on-time delivery across 200+ projects.
Full code ownership
You own every line of code we write. Source code is in your repository from day one. No ongoing license fees or vendor lock-in.
Senior engineers only
Every developer has 8+ years of Python experience and a proven track record with FastAPI. We do not outsource or use junior developers.
Built-in compliance and security
We build HIPAA, PCI-DSS, SOC 2, and GDPR compliant APIs by default. Our FastAPI projects include encryption, audit logging, and vulnerability scanning.
Post-launch production support
Every project includes 30 days of production support with a 24-hour bug fix SLA. We monitor uptime and performance via Sentry and PagerDuty.
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.