Experienced FastAPI Development DevelopersFastAPI Development
Hire senior engineers who have shipped 200+ products using FastAPI. Get your MVP in 8-12 weeks with fixed pricing.
IRPR builds high-performance backends with FastAPI, Pydantic, SQLAlchemy, and async/await. We use FastAPI for its automatic OpenAPI docs, dependency injection, and async support out of the box.
A typical FastAPI MVP ships in 8-12 weeks with a fixed price between $80K and $250K. We handle compliance for HIPAA, SOC 2, and PCI-DSS as part of the build.
CTOs scaling API-first platforms hire us for reliable, documented backends. Startup founders need FastAPI MVPs to validate ideas fast. Enterprise teams migrate from Flask or Django to FastAPI for better performance and type safety.
Types of software we ship.
REST API Backend
Build a CRUD API with FastAPI, SQLAlchemy, and PostgreSQL. Auto-generated Swagger docs and async endpoints.
Real-Time Data API
WebSocket endpoints with FastAPI and Redis. Stream live data for dashboards, chat, or IoT sensors.
Microservices Gateway
FastAPI as an API gateway routing to multiple services. Use RabbitMQ or Kafka for async messaging.
AI/ML Model Serving API
Deploy PyTorch or TensorFlow models behind FastAPI. Batch inference with Celery and Redis queues.
Ecommerce Checkout API
FastAPI backend for Stripe payments, order management, and inventory sync. PCI-DSS compliant.
Healthcare FHIR API
HIPAA-compliant FastAPI endpoints for patient data, appointments, and EHR integrations. Uses FHIR R4.
Payment Processing API
Integrate Stripe, PayPal, or Adyen with FastAPI. Handle webhooks, idempotency, and refunds.
Event-Driven API
FastAPI with Kafka or RabbitMQ for event sourcing. Process orders, notifications, and analytics asynchronously.
We build for every business type.
Healthcare
Fintech
Ecommerce
SaaS
Data Platforms
Why experienced FastAPI development developers matter
A FastAPI backend is only as good as the engineers who build it.
FastAPI brings automatic validation, async support, and OpenAPI docs. But writing clean, maintainable async code requires senior Python engineers who understand SQLAlchemy async sessions, dependency injection, and background tasks with Celery.
IRPR's engineers have shipped over 200 products using FastAPI. We know how to structure projects for scale, avoid common pitfalls like blocking calls in async endpoints, and set up proper logging and monitoring from day one.
Generic Python shop vs IRPR
Not all FastAPI developers are equal. Here is the difference.
Many agencies claim FastAPI expertise but deliver code with blocking calls, no type hints, and no tests. They bill by the hour and scope creeps.
IRPR assigns senior engineers only, uses a fixed-price roadmap, and ships production-ready FastAPI backends with CI/CD, monitoring, and full documentation.
- Junior developers learning FastAPI on your project
- Hourly billing with no cap
- No async patterns, blocking endpoints
- No automated tests or CI/CD
- No OpenAPI docs or type validation
- Handoff with no documentation
- Senior engineers with 5+ years of Python and FastAPI
- Fixed price agreed in week 2 (Roadmap phase)
- Async endpoints with proper connection pooling
- Pytest suite with 90%+ coverage, GitHub Actions CI/CD
- Auto-generated Swagger docs from Pydantic schemas
- Full code ownership and architecture diagrams
How we build your FastAPI backend
A four-phase process from idea to production.
We start with a 2-week Roadmap phase where we define the API contract, data model, and deployment architecture. You get a fixed price and timeline before any code is written.
Then we build in 2-week sprints, delivering a deployable API every sprint. By week 8-12 you have a production-ready backend with monitoring, error tracking, and auto-scaling.
What ships with every FastAPI project
You get more than just code. Every deliverable is production-ready.
We treat your FastAPI backend as a product, not a prototype. Everything is documented, tested, and deployed from day one.
Our checklist ensures you can maintain and scale the API without relying on IRPR. You own everything.
- Source code in your GitHub repository
- CI/CD pipeline with GitHub Actions (lint, test, deploy)
- Pytest test suite with 90%+ coverage
- Auto-generated OpenAPI (Swagger) documentation
- Docker Compose for local development
- Sentry error tracking and logging
- Database migrations with Alembic
- Deployment scripts for AWS ECS or GCP Cloud Run
- Architecture diagram and README
- Postman collection for external testing
What we ship in this practice.
Telemedicine API for a healthcare startup
Built a HIPAA-compliant FastAPI backend with video call scheduling, patient records, and Stripe billing. Reduced onboarding time by 40%. Tech stack: FastAPI, PostgreSQL, Twilio, Stripe.
Real-time fraud detection for a fintech
Developed a FastAPI service that ingests transaction streams and scores risk in under 100ms. Handled 5000 req/s with async workers. Tech stack: FastAPI, Kafka, Redis, TensorFlow.
Multi-tenant ecommerce backend
Created a FastAPI API powering a marketplace with 2000 sellers. Each tenant has isolated data and custom pricing. Tech stack: FastAPI, SQLAlchemy, PostgreSQL, Stripe Connect.
SaaS analytics dashboard backend
Built a FastAPI API that aggregates user events and serves real-time dashboards. Reduced report generation time from 5 minutes to 10 seconds. Tech stack: FastAPI, ClickHouse, Redis, Celery.
ML model serving API for a logistics company
Deployed a PyTorch model behind FastAPI to predict delivery delays. Achieved 99.5% uptime with auto-scaling. Tech stack: FastAPI, PyTorch, Docker, AWS ECS.
Event-driven notification service for media platform
Built a FastAPI webhook receiver that processes 1M events/day and sends push notifications via Firebase. Tech stack: FastAPI, Kafka, Firebase, PostgreSQL.
Why teams hire us.
Fixed price, not hourly
Every FastAPI project gets a fixed quote after the 2-week Roadmap phase. No hourly billing, no surprise invoices, no scope creep charges. You know the cost before we write a line of code.
Senior engineers only
All IRPR engineers have 5+ years of Python experience and have shipped at least 5 FastAPI projects. No junior developers learning on your dime. You talk directly to the person building your API.
200+ products shipped
We have built and deployed over 200 products using FastAPI and other frameworks. This experience means we avoid common pitfalls like blocking async calls, N+1 queries, and missing error handling.
98% on-time delivery
Our fixed-price, sprint-based model keeps projects on track. We deliver a working API every two weeks. Over 98% of our FastAPI projects ship on or before the agreed deadline.
Full code ownership
You own the entire codebase from day one. All source code, tests, deployment scripts, and documentation are in your repository. No licenses, no lock-in, no recurring fees.
Compliance-ready (HIPAA, SOC 2, PCI)
We build FastAPI backends that meet strict compliance requirements. HIPAA for healthcare, SOC 2 for SaaS, PCI-DSS for payments. Our engineers know how to implement audit logs, encryption, and access controls.
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.