Experienced FastAPI Development TeamDevelopment Team
We build fast, scalable APIs with FastAPI. Get a production-ready backend in 8-12 weeks.
IRPR builds production-grade APIs and backends using FastAPI, Pydantic, SQLAlchemy, and async Python. Every project is designed for speed and reliability from the start.
We deliver a working, deployable FastAPI backend in 8-12 weeks. Pricing ranges from $80,000 to $250,000 depending on scope. All projects are HIPAA, SOC 2, and PCI-DSS compliant when needed.
CTOs scaling their infrastructure, startup founders building an MVP, enterprise teams migrating to modern async APIs, and product managers needing a high-performance backend all hire IRPR.
Types of software we ship.
REST API Backend
Standard JSON REST APIs with FastAPI, automatic OpenAPI docs, and async database queries using SQLAlchemy 2.0.
GraphQL API Server
GraphQL endpoints powered by Strawberry or Ariadne, with efficient data loading via DataLoaders and integration with Redis caching.
Real-Time WebSocket Service
WebSocket-based real-time communication using FastAPI's built-in support, perfect for chat, notifications, and live updates.
Machine Learning Model Serving API
Deploy ML models behind FastAPI with ONNX Runtime or TensorFlow Serving, including async inference and batch processing.
E-Commerce Checkout API
FastAPI checkout backend with Stripe or Braintree integration, idempotency keys, and PostgreSQL transaction support.
IoT Device Data Ingestion API
High-throughput ingestion of IoT sensor data using FastAPI, MQTT bridge, and async writes to InfluxDB or TimescaleDB.
Payment Processing Webhook Service
Reliable webhook handler for Stripe, PayPal, or Adyen with signature verification, retry logic, and idempotent processing.
User Authentication & Authorization Service
OAuth2.0 and JWT-based auth service with FastAPI, including role-based access control, refresh tokens, and integration with Auth0 or Supabase.
We build for every business type.
Healthcare
Fintech
E-Commerce
SaaS
Logistics
Why you need an experienced FastAPI development team
FastAPI is fast by nature, but building a production-grade API requires experience with async patterns, database optimization, and security.
IRPR has shipped over 200 products using FastAPI. We know how to handle connection pooling, background tasks, and dependency injection at scale. Our teams have built APIs handling 10,000+ requests per second.
We use FastAPI with SQLAlchemy 2.0 async sessions, Redis caching, and Docker orchestration from day one. Every API includes automatic OpenAPI documentation and Pydantic validation.
The difference between a generic dev shop and an experienced FastAPI development team
Many agencies claim FastAPI expertise but deliver bloated code and poor async handling. IRPR is different.
We see codebases from generic shops all the time. They use synchronous database drivers, miss dependency injection patterns, and skip proper error handling. That leads to slow APIs and production incidents.
IRPR builds FastAPI backends the right way: async database sessions, proper dependency injection, structured logging, and automated testing. Every project includes a CI/CD pipeline from week one.
- Uses synchronous SQLAlchemy with FastAPI
- No dependency injection patterns
- No automated API documentation
- Rarely uses async background tasks
- Manual deployment with no CI/CD
- No performance benchmarks
- Async SQLAlchemy with connection pooling
- FastAPI dependency injection for all services
- Auto-generated OpenAPI docs always up to date
- Background tasks with Celery or FastAPI BackgroundTasks
- CI/CD pipeline on GitHub Actions from day one
- Load testing with Locust and k6 before launch
How we build your FastAPI backend in 8-12 weeks
Our process is transparent and fixed-price. You know the scope, timeline, and cost before we write a line of code.
We start with a 2-week Roadmap phase where we map every endpoint, database model, and integration. You get a detailed specification with a fixed price and delivery date.
Then we build in 2-week sprints. Every sprint ends with a working, deployable API. You see progress live and can test endpoints as they are built.
What ships with every FastAPI project from IRPR
You get more than code. Every delivery includes a production-ready setup with monitoring and documentation.
We don't just hand over a GitHub repo. We include everything needed to run, monitor, and scale the API in production.
- Complete FastAPI source code in your private repo
- CI/CD pipeline on GitHub Actions with automated tests
- Sentry error tracking configured for production
- Async database migrations with Alembic
- OpenAPI 3.0 documentation auto-generated
- Docker Compose setup for local development
- Load test report from k6 with response time percentiles
- Deployment scripts for AWS ECS or GCP Cloud Run
- Health check endpoint and readiness probe
- Structured logging with JSON format for log aggregation
What we ship in this practice.
Telemedicine API for HIPAA-compliant video visits
Built a FastAPI backend with WebRTC signaling, patient intake forms, and EHR integration. Reduced patient onboarding time by 60%. Tech stack: FastAPI, PostgreSQL, Twilio Video, AWS KMS.
Real-time payment processing webhook handler
Developed a Stripe webhook service handling 500 events/second with idempotency and retry logic. Achieved 99.99% uptime over 12 months. Tech stack: FastAPI, Stripe, Redis, Celery.
Multi-vendor marketplace checkout API
Created a checkout service that splits payments across vendors using Stripe Connect. Handled 2,000 concurrent checkouts with sub-200ms latency. Tech stack: FastAPI, PostgreSQL, Stripe Connect, Redis.
SaaS analytics dashboard backend
Built an API serving aggregated metrics for 10,000+ users. Implemented real-time WebSocket updates and SQL materialized views for dashboards. Tech stack: FastAPI, TimescaleDB, WebSockets, Redis.
IoT sensor data ingestion pipeline
Designed a high-throughput API receiving 10,000 sensor readings per second with async writes to InfluxDB. Allowed customers to query historical data in under 1 second. Tech stack: FastAPI, MQTT, InfluxDB, Docker.
ML model serving API for predictive maintenance
Exposed a TensorFlow model behind FastAPI with batch inference and A/B testing support. Reduced model inference latency by 40% compared to Flask. Tech stack: FastAPI, TensorFlow Serving, Redis, AWS SageMaker.
Why teams hire us.
Fixed price, not hourly
Every project gets a fixed quote in the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges.
Senior engineers only
Our team includes FastAPI core contributors and Python experts with 10+ years of experience. No junior developers work on your project.
8-12 week delivery guarantee
98% of our projects ship on schedule. We stick to the timeline defined in the Roadmap phase and communicate any risks early.
Full code ownership
You own every line of code we write. No licenses, no vendor lock-in. Source code is delivered to your GitHub or GitLab repository.
Built-in compliance
We build HIPAA, SOC 2, and PCI-DSS compliant APIs by default. Our FastAPI backends use encryption, audit logs, and role-based access control.
Post-launch support included
Every project includes 30 days of post-launch support. We monitor production, fix bugs, and provide performance tuning at no extra cost.
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.
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