Top FastAPI Development CompanyDevelopment Company
Build high-performance APIs with FastAPI. IRPR ships secure, scalable backends in 8-12 weeks.
IRPR builds custom FastAPI backends for web apps, mobile apps, and SaaS platforms. We use FastAPI with Pydantic, SQLAlchemy, and async PostgreSQL for high throughput APIs.
A typical FastAPI project ships with a CI/CD pipeline on GitHub Actions, automated testing with pytest, and OpenAPI documentation. MVP delivery takes 8-12 weeks with a fixed price between $80K and $250K.
CTOs building data-intensive platforms, product managers launching MVPs needing fast iteration, startups requiring compliant APIs (HIPAA, PCI-DSS), and enterprises migrating monoliths to microservices hire IRPR.
Types of software we ship.
REST API Backend
Complete RESTful API for web apps with pagination, filtering, and authentication using FastAPI and JWT.
Microservices Architecture
Decoupled FastAPI services communicating via RabbitMQ or Kafka, each independently deployable and scalable.
GraphQL API Gateway
GraphQL endpoint using Strawberry with FastAPI, combining multiple data sources and reducing frontend requests.
Real-Time Data Streaming API
WebSocket and Server-Sent Events endpoints in FastAPI for live data feeds, chat, and notifications.
Machine Learning Inference API
FastAPI endpoints serving PyTorch or TensorFlow models with automatic batching and model versioning.
Internal Tool API
Admin dashboards, reporting endpoints, and internal automation APIs built with FastAPI and SQLAlchemy.
E-Commerce API
Product catalog, cart, checkout, and payment processing endpoints integrating Stripe and PayPal.
Healthcare API (HIPAA)
HIPAA-compliant FastAPI endpoints with audit logging, encryption at rest, and BAA-ready infrastructure.
We build for every business type.
Healthcare
Fintech
Ecommerce
SaaS
Real Estate
Why choose a top FastAPI development company
Our FastAPI projects ship faster because of our structured process.
IRPR has shipped over 200 FastAPI backends across 50 countries. Our team of senior Python engineers averages 10+ years of experience with async programming and API design.
We follow a fixed-price model with no hourly billing. The Roadmap phase (week 2) locks the scope and price, giving you budget certainty from day one.
IRPR vs generic development agencies
Not all agencies build FastAPI correctly.
Many agencies default to Django or Flask, missing FastAPI's async performance and automatic validation. They skip OpenAPI docs and proper testing.
IRPR builds FastAPI natively. Every endpoint uses async, every schema uses Pydantic, and every project includes automated tests and CI/CD.
- Uses Django by default
- No async endpoints
- No Pydantic validation
- No OpenAPI documentation
- No pytest setup
- No CI/CD pipeline
- FastAPI native
- Async endpoints for all I/O
- Full Pydantic schemas
- Auto-generated OpenAPI docs
- pytest with coverage reports
- GitHub Actions CI/CD
Our FastAPI development process
We follow a 4-phase process to deliver production-ready APIs.
Phase 1: Discovery and architecture. We map your data model, define endpoints, and choose the right tools (PostgreSQL, Redis, Celery).
Phase 2-4: Prototype, sprint development, and deployment. We ship a working API in the second week and iterate from there.
What you get with every FastAPI project
Every FastAPI project ships with these deliverables.
We deliver more than code. You get a fully operational backend ready for production traffic.
- Source code in your GitHub repo
- CI/CD pipeline on GitHub Actions
- Automated tests with pytest and coverage reports
- OpenAPI documentation
- Docker containerization
- Sentry error tracking
- Cloud deployment scripts
- API security audit
- Performance benchmarking
- Developer onboarding guide
What we ship in this practice.
Patient portal API for telehealth platform
Built a FastAPI backend handling 50K concurrent users with real-time videochat scheduling. Reduced API latency by 60% using async endpoints and Redis caching. Stack: FastAPI, PostgreSQL, Redis, Twilio, Docker.
Payment processing API for fintech startup
Developed PCI-compliant payment routing API processing $2M monthly transactions. Integrated with Stripe and Plaid for bank account verification. Shipped in 10 weeks. Stack: FastAPI, Stripe, Plaid, MongoDB, Kubernetes.
Product search API for ecommerce platform
Created a FastAPI search microservice handling 200K requests/minute with Elasticsearch. Decreased average search response time from 300ms to 50ms. Stack: FastAPI, Elasticsearch, Redis, Docker, AWS Lambda.
Multi-tenant SaaS API for billing automation
Built a subscription management API with usage-based billing for a SaaS company. Supported 500+ tenants with isolated data via schema-per-tenant pattern. Stack: FastAPI, PostgreSQL, Stripe, RabbitMQ, Kubernetes.
ML model inference API for media platform
Developed a FastAPI endpoint serving image classification models with <100ms response time. Handled 10M predictions/month with automatic model versioning. Stack: FastAPI, TensorFlow, ONNX, Redis, Docker.
Real estate MLS API integration
Built a FastAPI gateway aggregating data from 5 MLS providers into a unified property search API. Reduced integration time from 3 months to 4 weeks per provider. Stack: FastAPI, PostgreSQL, Redis, Celery, Docker.
Why teams hire us.
Fixed price, not hourly
Every FastAPI 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 Python specialists with 10+ years experience in async programming, PostgreSQL optimization, and API security. No juniors.
8-12 week MVPs
We ship production-ready FastAPI backends in 8-12 weeks. Over 200 products delivered on time with 98% on-time delivery record.
Full ownership of code
You own all source code from day one. We deploy it in your AWS/GCP account with your CI/CD pipeline.
Async-first architecture
Every FastAPI project uses async endpoints for all I/O operations. We achieve 10x throughput compared to synchronous Django APIs.
Built-in compliance
We implement HIPAA, PCI-DSS, and SOC 2 controls directly in FastAPI middleware and database layers. Audit-ready from launch.
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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