Expert FastAPI Development CompanyDevelopment Company
Build high-performance APIs with FastAPI. Get a production-ready backend in 8-12 weeks with fixed pricing.
IRPR builds custom FastAPI backends for web apps, APIs, and microservices. We use FastAPI with async SQLAlchemy, Pydantic, and PostgreSQL to deliver high-performance systems.
Every project ships in 8-12 weeks with a fixed price between $80K and $250K. We handle HIPAA, PCI-DSS, and SOC 2 compliance for regulated industries.
CTOs of SaaS startups who need a scalable backend, engineering leads at fintech companies requiring PCI-compliant APIs, and product managers at healthcare firms building HIPAA-compliant patient portals rely on IRPR.
Types of software we ship.
REST API Development
Build versioned REST APIs with FastAPI, OpenAPI docs, and JWT auth. Integrate with Stripe or Twilio.
Microservices Architecture
Design async microservices using FastAPI and RabbitMQ. Deploy with Docker and Kubernetes on AWS ECS.
Real-time Data Pipelines
Stream real-time data with FastAPI WebSockets and Redis pub/sub. Process 10K+ events per second.
SaaS Backend Platform
Create multi-tenant SaaS backends with FastAPI and SQLAlchemy. Include role-based access and tenant isolation.
GraphQL API Gateway
Build a GraphQL gateway with Strawberry GraphQL on FastAPI. Aggregate multiple data sources into one endpoint.
Internal Tool Backend
Develop admin dashboards and internal APIs with FastAPI and React. Connect to existing databases and services.
E-commerce API
Handle product catalog, cart, checkout, and payments with FastAPI and Stripe. Support PCI-DSS compliance.
AI/ML Model Serving API
Serve ML models with FastAPI and ONNX Runtime. Achieve sub-50ms inference latency.
We build for every business type.
SaaS startups
Enterprise backend
Data-intensive apps
E-commerce and marketplaces
API-first companies
Why choose an expert FastAPI development company
IRPR has shipped over 200 products using FastAPI and Python.
FastAPI is the fastest growing Python web framework. We use it for new projects because it delivers high performance with async support and automatic OpenAPI docs.
Our FastAPI backends handle thousands of concurrent requests with ease. We integrate with Postgres, Redis, and cloud services to build production-ready systems.
FastAPI development: generic agency vs IRPR
Most agencies bill hourly and deliver late. IRPR is different.
Generic shops often overcomplicate FastAPI projects with bloated code. They lack deep async knowledge and use outdated libraries.
IRPR uses a fixed-price model with clear milestones. Our senior engineers write clean, async-first code with modern SQLAlchemy and Pydantic.
- Hourly billing with no cap
- No dedicated project manager
- Unknown timeframes
- Code without tests or CI/CD
- No compliance experience
- Often subcontract to juniors
- Fixed price from $80K
- Dedicated senior engineer
- 8-12 week delivery
- Full test suite and CI/CD pipelines
- HIPAA, PCI, SOC2 ready
- Direct access to engineers
Our FastAPI development process
From idea to production in 8-12 weeks.
We start with a Roadmap phase where we define the API structure, data models, and deployment strategy.
Then we build in 2-week sprints, integrating a CI/CD pipeline and staging environment from day one.
What ships with your FastAPI backend
Every project includes the following by default.
You get full source code, CI/CD pipelines, monitoring, and documentation.
- Source code in your GitHub repo
- CI/CD pipeline with GitHub Actions
- Docker Compose and Dockerfile
- API documentation with OpenAPI (Swagger)
- Unit and integration tests with pytest
- Sentry error tracking
- PostgreSQL database with migrations
- Redis for caching and queues
- Staging and production environments
- One-year code warranty
What we ship in this practice.
Patient Portal API for Healthcare
Built a HIPAA-compliant FastAPI backend for a telemedicine startup. Reduced patient data retrieval time by 60% using async SQLAlchemy and Redis caching. Tech: FastAPI, PostgreSQL, Redis, Twilio.
Fraud Detection Microservice
Developed real-time fraud detection API for a fintech company. Processed 5000 transactions per second with sub-200ms latency. Tech: FastAPI, Kafka, TensorFlow, PostgreSQL.
SaaS Subscription Backend
Created a multi-tenant FastAPI backend for a subscription analytics platform. Handled 10,000 concurrent users with 99.99% uptime. Tech: FastAPI, Celery, Stripe, Docker.
E-commerce API Gateway
Designed an API gateway for a multi-vendor marketplace. Integrated 3 payment gateways and 2 shipping APIs. Reduced API response time by 50%. Tech: FastAPI, GraphQL, Stripe, Redis.
Real-time Event Processing Pipeline
Built a WebSocket-based event pipeline for a logistics company. Saved 20 hours per week in manual data entry. Tech: FastAPI, WebSockets, RabbitMQ, PostgreSQL.
AI Model Serving API
Developed FastAPI endpoints to serve a recommendation model for an e-commerce brand. Achieved 45ms inference time and 30% increase in add-to-cart rate. Tech: FastAPI, ONNX, Redis, Kubernetes.
Why teams hire us.
Fixed price, not hourly
Every FastAPI project gets a fixed quote during the Roadmap phase (week 2). No hourly billing means no surprise invoices.
Senior engineers only
We assign a principal engineer with 10+ years of Python and FastAPI experience. No junior developers or subcontractors.
Compliance built in
Your FastAPI backend ships HIPAA, PCI-DSS, or SOC 2 ready. We implement encryption, audit logs, and access controls by default.
8-12 week delivery
We ship production-ready backends in 8 to 12 weeks. The timeline is fixed during the Roadmap phase.
Full code ownership
You own 100% of the code, IP, and infrastructure. No licensing fees or lock-in.
Post-launch support
We include a 1-year code warranty with monitoring and bug fixes. Extended support contracts available.
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.