Senior FastAPI Development StudioDevelopment Studio
Production-grade FastAPI backends, built by senior engineers in 8-12 weeks. Fixed price, no hourly billing, full code ownership.
IRPR is a senior FastAPI development studio. We build production-grade APIs using FastAPI, Pydantic, SQLAlchemy, and async Python. Every project includes automated tests, CI/CD pipelines, and OpenAPI documentation out of the box.
A typical FastAPI backend ships in 8-12 weeks at a fixed price between $80K and $250K. All projects are fully owned by you - source code, schemas, and deployment scripts. We comply with HIPAA, PCI-DSS, and SOC 2 standards where required.
Founders building SaaS products hire us to launch their MVP with a FastAPI backend. CTOs at mid-market companies bring us in to modernize legacy Django or Flask apps. Engineering teams that lack senior Python talent use us to build and hand over complete API services.
Types of software we ship.
SaaS backend with FastAPI
Multi-tenant APIs with subscription billing, user auth, and async task queues built on FastAPI and Celery.
Ecommerce API with FastAPI
Headless commerce backends integrating Stripe, Shopify, and custom inventory engines using FastAPI.
Healthcare API with FastAPI
HIPAA-compliant APIs for patient portals, EHR integrations, and telemedicine using FastAPI and FHIR.
Fintech API with FastAPI
PCI-DSS compliant payment processing, ledger systems, and KYC workflows built on FastAPI.
Real-time data pipeline with FastAPI
WebSocket-enabled APIs for live dashboards, chat, and event streaming using FastAPI and Redis.
AI/ML inference API with FastAPI
High-performance endpoints serving LLMs, computer vision models, or recommendation engines via FastAPI.
Internal tool API with FastAPI
Admin dashboards, reporting endpoints, and workflow automation backends using FastAPI and RQ.
Microservices gateway with FastAPI
API gateway, service discovery, and authentication layer built with FastAPI for multi-service architectures.
We build for every business type.
SaaS startups
healthtech
fintech
ecommerce
logistics & manufacturing
Why choose a senior FastAPI development studio
A junior developer writes FastAPI that works on a laptop. A senior studio writes FastAPI that survives 10,000 requests per second.
IRPR has shipped 200+ products using FastAPI for clients in 50 countries. Every API is built with async endpoints, Pydantic validation, connection pooling, and automated load testing. We use Alembic for safer database migrations and pytest with coverage targets above 90%.
Our engineers average 10+ years of Python experience. They have contributed to CPython, maintained production Kubernetes clusters, and deployed APIs handling 1 million+ daily requests. You get the same senior team from discovery to deployment.
Generic dev shop vs IRPR's senior FastAPI studio
Most dev shops staff juniors and bill hourly. IRPR gives you a fixed price and a senior team that ships.
Generic dev shops often assign freelancers with one year of Python experience to your FastAPI project. They charge hourly, inflate timelines with discovery phases, and hand over unmanageable code with no tests or CI/CD.
IRPR assigns a senior FastAPI engineer and a delivery lead from day one. You get a fixed quote at the end of the Roadmap phase (week 2), a production-ready API by week 10-12, and full ownership of everything built.
- Hourly billing with no cap
- Junior or offshore team
- No automated tests
- Ships without docs
- No CI/CD pipeline
- Code ownership unclear
- Fixed price from week 2
- Senior Python engineers only
- 90%+ test coverage
- Auto-generated OpenAPI docs
- GitHub Actions CI/CD
- Full source code ownership
How our FastAPI development process works
From idea to production in 8-12 weeks with zero bloat.
Every project starts with a two-week Roadmap phase. IRPR maps your business logic into FastAPI routes, data models, and async workflows. You get a fixed price and a delivery timeline before any code is written.
During the Product phase, a senior engineer builds endpoints, integrates your chosen services (Stripe, SendGrid, AWS S3, OpenAI), and writes tests. You see working APIs every week. Deployment to your cloud account happens on week 10-12.
What ships with every FastAPI project
IRPR delivers more than API endpoints. Every project includes a production-ready foundation.
A generic developer hands you a zip file with Python files. IRPR hands you a private GitHub repository with a full CI/CD pipeline, automated tests, and deployment scripts ready for your cloud account.
We include health check endpoints, rate limiting, structured logging, and error tracking out of the box. You can hand the repo to your internal team immediately and they can run it, deploy it, and extend it.
- Source code in your Github repository
- CI/CD pipeline via GitHub Actions
- Automated test suite with 90% coverage
- OpenAPI documentation (Swagger UI)
- Async SQLAlchemy models with Alembic migrations
- Health check and readiness endpoints
- Structured JSON logging via Loguru
- Error tracking with Sentry integration
- Docker Compose and kubernetes manifests
- One-click deploy to AWS/GCP/Azure
What we ship in this practice.
SaaS subscription backend for B2B analytics
IRPR built a multi-tenant FastAPI backend with Stripe Billing, user roles, and async report generation. Reduced onboarding time from 3 days to 15 minutes. Stack: FastAPI, Celery, PostgreSQL, Stripe.
HIPAA-compliant patient intake API
Built a FastAPI service for a telemedicine startup handling PHI. Achieved HIPAA compliance with encryption at rest and in transit, audit logging, and role-based access. Stack: FastAPI, FHIR, AWS KMS, PostgreSQL.
PCI-DSS payment orchestration API
Replaced a legacy monolith with a FastAPI microservice handling 500K+ monthly transactions. Cut transaction processing time by 40%. Stack: FastAPI, Redis, Stripe, AWS ECS.
Headless ecommerce API with custom inventory
Designed and shipped a FastAPI backend for a multi-brand ecommerce store. Integrated Shopify Admin API, custom inventory engine, and real-time stock sync. Stack: FastAPI, Celery, Redis, Shopify API.
Real-time fleet tracking API for logistics
Used FastAPI with WebSockets to stream GPS data from 2,000+ vehicles into a live dashboard. Reduced fuel costs by 12% through route optimization. Stack: FastAPI, Redis, WebSockets, PostgreSQL.
AI-driven recommendation engine API
IRPR deployed a FastAPI endpoint serving personalized product recommendations using a trained PyTorch model. Increased average order value by 18%. Stack: FastAPI, PyTorch, Redis, AWS Lambda.
Why teams hire us.
Senior engineers only, no juniors
IRPR employs 12 senior Python engineers with 10+ years average experience. Every FastAPI project is built by a staff engineer who has shipped production systems handling 1M+ requests per day.
Fixed price from week 2
Generic agencies bill hourly and inflate hours. IRPR gives you a fixed quote for your FastAPI project at the end of the 2-week Roadmap phase. No surprise invoices, no scope creep charges.
Full code ownership
You own the entire codebase, database migrations, and deployment scripts. IRPR keeps no licenses, no royalties, no ongoing fees. The IP is yours to use, modify, and sell.
Async-first architecture
IRPR builds FastAPI services using async endpoints, async SQLAlchemy, and async task queues. This delivers 2-5x higher throughput compared to sync Flask or Django backends.
Built-in compliance
IRPR has delivered FastAPI backends compliant with HIPAA, PCI-DSS, SOC 2, and FERPA. We bake encryption, audit logging, and access controls into every API layer.
We ship in 8-12 weeks
FastAPI lets us move fast. IRPR has shipped production-grade backends for SaaS startups, fintech platforms, and ecommerce brands in as little as 8 weeks from Roadmap to Release.
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.