FastAPI Development DevelopersDevelopers
We build high-performance APIs with FastAPI and Python. Your MVP ships in 8-12 weeks with a fixed price.
IRPR builds FastAPI applications for startups and enterprises. We use Python 3.12, async SQLAlchemy, Pydantic v2, and PostgreSQL to create APIs that handle 10,000+ requests per second with sub-50ms latency.
Every FastAPI project ships in 8-12 weeks with a fixed price between $80K and $250K. We handle deployment on AWS ECS with auto-scaling, Sentry error tracking, and 99.9% uptime SLA. Our code passes PCI-DSS and HIPAA compliance audits.
We work with CTOs who need a scalable backend, product managers launching a new SaaS, founders building an MVP for investor demos, and engineering leads migrating from Django or Flask to FastAPI for better async performance.
Types of software we ship.
REST API development
Build RESTful APIs with FastAPI, OpenAPI docs, and JWT auth. Supports 10,000+ concurrent users.
GraphQL API development
Implement GraphQL endpoints using Strawberry or Ariadne with FastAPI. Subscriptions for real-time data.
Microservices architecture
Design event-driven microservices with FastAPI, RabbitMQ, and Docker Compose. Independent deploy units.
Real-time data pipeline
Stream processing with FastAPI WebSockets, Kafka, and Redis. Handles 1M+ events per day.
Authentication and authorization system
OAuth 2.0, OpenID Connect, RBAC with FastAPI. Integrates with Auth0, Okta, or custom JWT.
Data ingestion API
High-throughput ingestion APIs using FastAPI background tasks and Celery. Processes CSV, JSON, Parquet.
Admin dashboard backend
FastAPI backend for admin panels with SQLAdmin, audit logs, and role-based permissions.
Ecommerce API backend
Cart, checkout, inventory APIs with FastAPI and Stripe. Handles 500+ transactions per minute.
We build for every business type.
SaaS platforms
Healthcare
Fintech
Ecommerce
Enterprise
Why FastAPI development developers choose IRPR
We have shipped over 200 products using FastAPI for clients in 50 countries.
FastAPI is the fastest growing Python web framework. It uses async IO to handle 10,000+ requests per second. Pydantic v2 ensures data validation with zero overhead. Our developers have written over 500,000 lines of FastAPI code across 40+ projects.
Every project starts with a 2-week Roadmap phase where we define the API schema, endpoints, and deployment architecture. You get a fixed price and timeline before any code is written. No surprises.
IRPR vs generic development shops for FastAPI
Most agencies treat FastAPI like Flask. We build it for scale from day one.
Generic shops write synchronous code in FastAPI, missing the async advantage. They skip automated API documentation and ignore deployment hardening. Their projects often need a rewrite within 6 months.
IRPR builds FastAPI applications with async SQLAlchemy, Pydantic v2 models, and auto-generated OpenAPI docs. We deploy on AWS ECS with CI/CD, Sentry monitoring, and database migration scripts. Your API is production-ready from the first commit.
- Sync code in async endpoints
- No automated API docs
- Manual deployment with SSH
- No error tracking
- No database migration plan
- Hourly billing with scope creep
- Full async with SQLAlchemy async
- Auto-generated OpenAPI docs
- CI/CD on GitHub Actions to AWS ECS
- Sentry error tracking from day one
- Alembic migration scripts
- Fixed price with 2-week Roadmap
How we build your FastAPI project
A 4-phase process that delivers a production-ready API in 8-12 weeks.
Phase 1 is the Roadmap: we define every API endpoint, data model, and integration. You get a detailed specification and a fixed price. Phase 2 is development: we build the API in 2-week sprints with daily updates.
Phase 3 is testing and hardening: load testing with Locust, security audit, and documentation. Phase 4 is deployment: we set up staging and production environments, CI/CD pipelines, and monitoring. You own the code and infrastructure.
What ships with your FastAPI project
Every project includes these deliverables by default.
You get a production-ready FastAPI application with full async support, auto-generated OpenAPI documentation, and a CI/CD pipeline. The code is in your GitHub repository from day one.
We include database migrations, environment configuration, logging, error tracking, and deployment scripts. No black boxes. You can extend the API yourself or hand it to another team.
- Source code in your GitHub repo
- CI/CD pipeline with GitHub Actions
- Deployment on AWS ECS with auto-scaling
- Sentry error and performance monitoring
- Alembic database migration scripts
- OpenAPI 3.0 documentation
- Pytest test suite with 90%+ coverage
- Load test results with Locust
- Environment configuration for dev, staging, production
- Runbook with deployment and rollback instructions
What we ship in this practice.
SaaS analytics backend
Built a FastAPI backend for a real-time analytics platform handling 50,000 events per second. Used async SQLAlchemy, Redis caching, and WebSocket push. Reduced query latency from 200ms to 15ms. Tech stack: FastAPI, PostgreSQL, Redis, AWS ECS.
HIPAA-compliant patient portal API
Developed a FastAPI API for a telehealth startup. Implemented OAuth 2.0 with Auth0, end-to-end encryption, and audit logging. Passed HIPAA audit on first submission. Tech stack: FastAPI, PostgreSQL, Auth0, AWS KMS.
Payment processing API
Created a PCI-DSS compliant FastAPI API for a fintech company. Integrated with Stripe Connect for marketplace payments. Handled 10,000 transactions per day with 99.99% uptime. Tech stack: FastAPI, Stripe, PostgreSQL, Redis.
Multi-vendor ecommerce API
Built a FastAPI backend for a B2B marketplace with 500+ vendors. Implemented inventory sync, order routing, and real-time tracking. Reduced order processing time from 4 hours to 2 minutes. Tech stack: FastAPI, PostgreSQL, RabbitMQ, Stripe.
Real-time IoT data pipeline
Developed a FastAPI ingestion API for a manufacturing client. Processed 1 million sensor readings per day with Kafka and InfluxDB. Provided real-time dashboards with Grafana. Tech stack: FastAPI, Kafka, InfluxDB, Grafana.
Learning management system API
Built a FastAPI backend for an edtech platform serving 100,000 students. Implemented course enrollment, progress tracking, and certificate generation. Integrated with Stripe for payments. Tech stack: FastAPI, PostgreSQL, Redis, Stripe.
Why teams hire us.
Senior engineers only
Every FastAPI developer at IRPR has 8+ years of Python experience. We have built APIs for companies handling $1B+ in transactions. No junior developers, no outsourcing.
Fixed price from week 2
After the 2-week Roadmap phase, you get a fixed price for the entire project. No hourly billing, no surprise invoices. If we discover new requirements, we add them to a separate quote.
Production-ready from day one
We deploy to a staging environment in the first sprint. You get a working API with CI/CD, monitoring, and documentation. No long wait for deployment at the end.
Compliance built in
We build HIPAA, PCI-DSS, and SOC 2 compliant APIs. Our FastAPI projects include audit logs, encryption at rest, and role-based access control. We have passed 10+ compliance audits.
Full code ownership
You own all source code, documentation, and infrastructure from day one. There is no lock-in. You can deploy anywhere, hire other teams, or extend the API yourself.
Fast start, no delays
We can start your FastAPI project within 1-2 weeks of signing. We work async with daily overlap hours for US and European time zones. No waiting for resource availability.
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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