Professional FastAPI Development CompanyFastAPI Development
We build production-grade FastAPI backends. 8-12 week MVPs with senior Python engineers.
IRPR is a professional FastAPI development company. We use FastAPI with Pydantic v2, SQLAlchemy 2.0, and asyncpg to build high-performance APIs. Our senior engineers write type-safe, documented endpoints that handle thousands of requests per second.
Every FastAPI project ships with auto-generated OpenAPI docs, CI/CD pipelines on GitHub Actions, and Sentry error tracking. MVPs take 8-12 weeks. Fixed pricing starts at $80K and goes to $250K for complex systems. We comply with HIPAA, PCI-DSS, and SOC 2.
Founders building a SaaS MVP hire us for a production-ready API backend. CTOs scaling an existing system hire us to migrate from Flask or Django to FastAPI. Product owners at healthcare and fintech companies hire us for compliant, high-throughput APIs.
Types of software we ship.
REST API backend
Full CRUD API with JWT auth, rate limiting, and async database access. Built with FastAPI, SQLAlchemy, and PostgreSQL.
Microservices platform
Decoupled services communicating via RabbitMQ or Kafka. Each service runs in a Docker container with its own FastAPI instance.
Real-time data API
WebSocket endpoints for live dashboards, chat, or streaming data. Uses FastAPI's built-in WebSocket support and Redis pub/sub.
Third-party API integration
Connect your app to Stripe, Twilio, HubSpot, or Salesforce. We build FastAPI wrappers with retry logic and idempotency keys.
Data pipeline API
Ingest, transform, and serve large datasets via FastAPI endpoints. Uses asyncpg for bulk inserts and Celery for background jobs.
Admin dashboard backend
Role-based admin panel with FastAPI, SQLAlchemy, and React frontend. Includes audit logging and export to CSV/PDF.
Machine learning model serving
Deploy trained ML models behind a FastAPI endpoint. Supports ONNX, TensorFlow, and PyTorch with response caching.
Authentication and authorization service
OAuth2, SAML, or JWT-based auth service built with FastAPI. Integrates with Okta, Auth0, or Azure AD.
We build for every business type.
healthcare and life sciences
fintech and payments
SaaS and B2B platforms
ecommerce and retail
media and content
Why choose a professional FastAPI development company
FastAPI is fast, but building a production-grade API takes experience.
FastAPI is one of the fastest Python frameworks, but it is not magic. You still need async SQLAlchemy sessions, proper dependency injection, and background task management. IRPR's senior engineers have shipped over 200 products using FastAPI. We write code that passes security audits and handles 10,000+ requests per second.
We also handle deployment. Every FastAPI project includes a Dockerfile, docker-compose.yml, and CI/CD pipeline. We deploy to AWS ECS, Google Cloud Run, or Azure App Service. You get auto-scaling, health checks, and zero-downtime deployments from day one.
Professional FastAPI development company vs generic dev shop
Not all agencies know FastAPI well. Here is the difference.
Hiring a generic Python shop often means they use Flask or Django with synchronous code. They may not understand async/await, Pydantic validation, or dependency injection. Your API becomes slow, hard to test, and expensive to maintain.
IRPR specializes in FastAPI. Every engineer on our team has built at least 5 production FastAPI services. We follow OpenAPI standards, write integration tests with pytest-asyncio, and use Alembic for database migrations. You get a fast, documented, and secure API.
- Uses Flask or Django by default
- Writes synchronous endpoints
- No auto-generated API docs
- Manual deployment with SSH
- No async database support
- Hourly billing with scope creep
- Uses FastAPI with Pydantic v2
- Writes async endpoints with asyncio
- Auto-generated OpenAPI and Swagger docs
- CI/CD on GitHub Actions to cloud
- Asyncpg for high-throughput DB access
- Fixed price from Roadmap phase
How we build your FastAPI project in 4 phases
We follow a proven process from idea to production API.
Every FastAPI project starts with a 2-week Roadmap phase. We define endpoints, data models, and deployment architecture. You get a fixed price and a 12-week timeline before any code is written.
After approval, we build the API in 2-week sprints. Each sprint ends with a working, deployable API. You see progress every 14 days. We handle testing, documentation, and deployment.
What ships with every FastAPI project
You own everything. No black boxes, no hidden dependencies.
When IRPR builds your FastAPI backend, you get the full source code, all configuration files, and complete documentation. We do not use proprietary frameworks or lock you in. You can take the code to any team tomorrow.
Every project includes a production-ready deployment setup. We configure auto-scaling, logging, monitoring, and error tracking. Your API is ready for real traffic from day one.
- Full source code in your private GitHub repo
- Auto-generated OpenAPI 3.0 specification
- Pydantic v2 models with validation
- SQLAlchemy 2.0 async models and migrations
- CI/CD pipeline on GitHub Actions
- Dockerfile and docker-compose.yml
- Sentry error tracking integration
- Pytest suite with async tests
- Deployment to AWS, GCP, or Azure
- 30-day warranty and knowledge transfer session
What we ship in this practice.
Healthcare patient portal API
Built a FastAPI backend for a telemedicine startup. Handles 500 concurrent WebSocket connections for video calls. Reduced latency by 60% compared to their old Flask API. Tech stack: FastAPI, PostgreSQL, Twilio, AWS ECS.
Fintech payment processing API
Developed a PCI-DSS compliant payment API using FastAPI and Stripe. Processes 10,000 transactions per hour with idempotency keys and retry logic. Tech stack: FastAPI, Stripe, Redis, Docker.
SaaS multi-tenant analytics backend
Created a FastAPI backend for a B2B analytics platform. Supports 500 tenants with row-level security. Each tenant sees only their data. Tech stack: FastAPI, SQLAlchemy, PostgreSQL, Celery.
Ecommerce product catalog API
Built a FastAPI catalog service for a fashion retailer. Handles 1 million product SKUs with full-text search via PostgreSQL. Reduced page load time by 70%. Tech stack: FastAPI, PostgreSQL, Elasticsearch, Redis.
Real estate MLS data API
Developed a FastAPI integration service that syncs MLS listings from 10 different sources. Handles 50,000 property updates daily. Tech stack: FastAPI, PostgreSQL, RabbitMQ, AWS Lambda.
EdTech assessment API
Built a FastAPI backend for an online testing platform. Supports 10,000 concurrent users taking timed exams. Auto-grades multiple choice and essay questions. Tech stack: FastAPI, PostgreSQL, Redis, Celery.
Why teams hire us.
Senior FastAPI engineers only
Every IRPR engineer has built at least 5 production FastAPI services. We do not outsource to junior developers. You work directly with a principal engineer who knows async Python, Pydantic, and SQLAlchemy inside out.
Fixed price, no hourly surprises
We give you a fixed price after the 2-week Roadmap phase. No hourly billing, no scope creep charges. If we need more features, we quote them separately before starting work. You know the cost upfront.
Production-grade from sprint one
Your FastAPI API ships with auto-generated OpenAPI docs, CI/CD pipeline, Docker containers, and Sentry error tracking from the first sprint. No rewrites. No tech debt accumulation.
Compliance ready (HIPAA, PCI, SOC 2)
We build FastAPI backends that pass security audits. We implement encryption at rest and in transit, audit logging, and role-based access control. We have shipped HIPAA-compliant APIs for 20+ healthcare clients.
Full code ownership
You own all source code, documentation, and configuration files. No proprietary frameworks, no license fees, no lock-in. You can hire any team to maintain the code tomorrow.
We ship on time, 98% of the time
Our 8-12 week timeline is realistic. We have delivered over 200 projects on time. If we are late, we tell you in the first sprint and adjust scope. No death marches.
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.
─── share this page ───
