Senior FastAPI Development DevelopersFastAPI Development
Hire senior FastAPI development developers who ship production-ready APIs in 8-12 weeks. Fixed price, no hourly billing.
IRPR builds high-performance APIs with FastAPI, Pydantic, and SQLAlchemy. Our senior FastAPI development developers design async endpoints that handle 10,000+ requests per second with sub-50ms latency.
Every project ships in 8-12 weeks with a fixed price between $80K and $250K. We build for HIPAA, PCI-DSS, and SOC 2 compliance out of the box.
We work with CTOs scaling microservices, startups launching SaaS MVPs, enterprises migrating from Flask or Django, and fintech firms needing low-latency payment APIs.
Types of software we ship.
REST API Backend
Build RESTful APIs with FastAPI, Pydantic schemas, and SQLAlchemy ORM. Auto-generated OpenAPI docs and async database sessions.
Microservices Gateway
Deploy API gateways using FastAPI with Redis caching, rate limiting, and JWT auth. Handles service discovery and load balancing.
Real-Time Data Pipeline
Stream real-time data with FastAPI WebSocket endpoints, Kafka producers, and Celery workers. Process 100k events per minute.
AI Model Serving API
Serve ML models via FastAPI with ONNX runtime, GPU acceleration, and batch inference. Achieve 20ms prediction latency.
Payment Processing API
Integrate Stripe, PayPal, or Adyen with FastAPI idempotency keys and webhook verification. PCI-DSS compliant by design.
WebSocket Server
Build real-time chat, live notifications, and collaborative editing with FastAPI WebSockets and Redis Pub/Sub.
GraphQL API
Expose GraphQL endpoints using Strawberry with FastAPI. Auto-resolve nested queries and batch database loads.
Async Task Queue API
Queue background jobs with FastAPI, Celery, and Redis. Monitor task progress via WebSocket push notifications.
We build for every business type.
Fintech
Healthcare
Ecommerce
SaaS
Media & Tech
Why Hire Senior FastAPI Development Developers from IRPR
Our senior FastAPI development developers ship production-grade APIs with full async support, auto-generated docs, and built-in compliance.
FastAPI is the fastest Python web framework for building APIs. It uses Python type hints, Pydantic for validation, and ASGI for async performance. Our developers have shipped over 200 products using FastAPI across fintech, healthcare, and SaaS.
Every API we build includes auto-generated OpenAPI documentation, request validation, and dependency injection. We integrate with PostgreSQL, Redis, and Kafka for data persistence and streaming. Our average delivery time is 12 weeks.
Generic Dev Shop vs IRPR Senior FastAPI Developers
Not all FastAPI developers are equal. Here is how IRPR's senior FastAPI development developers compare to a generic dev shop.
Generic dev shops assign junior developers who learn FastAPI on your dime. They produce slow endpoints, missing error handling, and no async patterns.
IRPR assigns senior engineers with 10+ years of Python experience. Every developer has shipped at least 5 FastAPI projects in production. We write tests, set up CI/CD, and deploy with Docker and Kubernetes.
- Junior devs learning FastAPI on your project
- No async patterns, blocking I/O everywhere
- No auto-generated OpenAPI docs
- No unit tests or integration tests
- Manual deployment, no CI/CD
- Hourly billing, scope creep common
- Senior FastAPI developers with 10+ years Python
- Full async endpoints with asyncio and Uvicorn
- Auto-generated OpenAPI docs from Pydantic schemas
- 80%+ test coverage with pytest and httpx
- CI/CD pipeline on GitHub Actions, Docker, Kubernetes
- Fixed price, no hourly billing, no surprises
Our FastAPI Development Process in 4 Phases
From idea to production API in 8-12 weeks. Our senior FastAPI development developers follow a structured process.
We start with a 2-week Roadmap phase where we define endpoints, data models, and infrastructure. You get a detailed specification and a fixed price quote.
Then we build, test, and deploy in iterative sprints. Every sprint ends with a working API deployed to staging. You see progress every week.
What Ships When You Hire Senior FastAPI Development Developers
Every project includes these deliverables. No hidden items, no extra charges.
We believe in full transparency. When you hire senior FastAPI development developers from IRPR, you get everything needed to run your API in production.
- Source code in your private GitHub repository
- CI/CD pipeline on GitHub Actions (lint, test, deploy)
- Dockerfile and docker-compose for local development
- Kubernetes manifests or Terraform for cloud deployment
- Auto-generated OpenAPI (Swagger) documentation
- 80%+ test coverage with pytest and httpx
- Database migrations with Alembic
- Sentry error tracking and logging setup
- Load test report with Locust (target: 1000 RPS)
- 30-day post-launch warranty and 1-hour SLA for critical issues
What we ship in this practice.
Real-Time Fraud Detection API
Built a FastAPI microservice that processes 500 transactions per second with sub-100ms latency. Integrated with Redis for session caching and PostgreSQL for audit logs. Reduced fraud losses by 35%.
Telemedicine Patient Portal Backend
Developed a HIPAA-compliant FastAPI backend for video scheduling, EHR integration, and prescription management. Handles 10,000 concurrent users with WebSocket-based real-time updates.
Multi-Tenant SaaS API for Inventory Management
Created a FastAPI API with row-level security and per-tenant database schemas. Integrated with Stripe for billing and SendGrid for notifications. Onboarded 200 tenants in the first month.
Ecommerce Product Recommendation Engine
Built a FastAPI service that serves personalized product recommendations using collaborative filtering. Achieved 40ms average response time at 2000 RPS. Increased average order value by 18%.
Video Streaming API with Transcoding
Developed a FastAPI backend that accepts uploads, triggers FFmpeg transcoding via Celery, and streams HLS video. Handles 4K video with 99.9% uptime on AWS.
Logistics Route Optimization API
Created a FastAPI microservice that computes optimal delivery routes using Google OR-Tools. Processes 10,000 delivery points in under 2 seconds. Reduced fuel costs by 22%.
Why teams hire us.
Fixed price, not hourly
Every project gets a fixed quote after the Roadmap phase. No hourly billing, no surprise invoices. You know the cost before we write a line of code.
Senior engineers only
Every developer on your project has 10+ years of Python experience and has shipped at least 5 FastAPI projects. No junior devs, no offshore teams.
Compliance built in
We build HIPAA, PCI-DSS, and SOC 2 compliant APIs by default. Our FastAPI developers use encryption, audit logging, and access control from day one.
Async-first communication
We work async-first with daily written updates and weekly video calls. You get a Slack channel, a Notion project page, and a live demo URL.
8-12 week delivery
Our average project delivers in 12 weeks. We use iterative sprints and continuous deployment so you see progress every week.
Full ownership
You own the entire codebase, documentation, and infrastructure. No licensing fees, no vendor lock-in. We hand over everything on day 1 of the warranty period.
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.