Top FastAPI Development StudioDevelopment Studio
We build production-grade APIs and backends with FastAPI. Senior engineers deliver in 8-12 weeks at a fixed price.
IRPR is a top FastAPI development studio. We build high-performance APIs, microservices, and backend systems using FastAPI, Pydantic, SQLAlchemy, and async Python. Every project ships with automated tests, CI/CD pipelines, and OpenAPI documentation.
We deliver a production-ready FastAPI backend in 8-12 weeks. Pricing is fixed from $80K to $250K depending on scope. All projects include HIPAA, PCI-DSS, or SOC 2 compliance where required.
CTOs hire us to replace slow legacy backends. Startup founders hire us to ship their SaaS MVP fast. Enterprise teams hire us to build scalable microservices architectures. Each client gets a dedicated senior FastAPI engineer as the technical lead.
Types of software we ship.
FastAPI REST API
Build a RESTful API with FastAPI, async endpoints, and automatic OpenAPI docs. Includes rate limiting and authentication.
FastAPI Microservices Backend
Decompose a monolith into FastAPI microservices with message queues (RabbitMQ, Kafka) and Docker orchestration.
FastAPI SaaS Backend
Build the backend for a SaaS product with FastAPI, Stripe integration, multi-tenant databases, and usage tracking.
FastAPI Data Pipeline API
Create a data ingestion and processing API with FastAPI, async workers, and integration with Snowflake or BigQuery.
FastAPI Real-Time API
Build a WebSocket-based real-time API with FastAPI for live notifications, chat, or streaming data.
FastAPI GraphQL Gateway
Implement a GraphQL gateway using Strawberry or Ariadne on top of FastAPI to unify multiple data sources.
FastAPI Admin Dashboard Backend
Develop the backend for an admin dashboard with FastAPI, role-based access control, and audit logging.
FastAPI Migration from Flask/Django
Migrate an existing Flask or Django backend to FastAPI for better performance, async support, and type safety.
We build for every business type.
Startups and SaaS
Healthcare
Fintech
Ecommerce and Retail
Enterprise and Internal Tools
Why IRPR is the top FastAPI development studio
Our track record and engineering discipline set us apart from other shops.
IRPR has shipped over 200 products using FastAPI since 2020. Our senior engineers average 10+ years of Python experience and contribute to open source FastAPI projects. Every API we build includes automated tests, type annotations, and async performance tuning.
We use a fixed-price model with a 2-week Roadmap phase to define scope exactly. This means no budget overruns and no hidden fees. Our on-time delivery rate is 98% across all projects.
How IRPR differs from other FastAPI developers
Most agencies sell hours. We sell outcomes with fixed pricing and senior-only teams.
Generic dev shops assign junior developers who learn FastAPI on your dime. They charge hourly and have no incentive to finish quickly. Their code often lacks tests, async patterns, or proper error handling.
IRPR assigns a senior FastAPI engineer as the technical lead. We work in 2-week sprints with transparent reporting. You get a fixed price, a clear timeline, and a production-ready API that passes compliance audits.
- Hourly billing with no cap
- Junior or mid-level engineers
- No async performance tuning
- Bare minimum test coverage
- No CI/CD pipeline included
- You own nothing until paid in full
- Fixed price from $80K to $250K
- Senior engineers only (10+ years)
- Async FastAPI with Pydantic validation
- 100% test coverage on critical paths
- CI/CD with GitHub Actions and Docker
- Full source code ownership from day one
Our FastAPI development process
We follow a structured 4-phase process to deliver your FastAPI backend on time and on budget.
Every project starts with a 2-week Roadmap phase. We define the API endpoints, data models, authentication flows, and deployment architecture. You get a detailed spec and a fixed price before any coding begins.
The Product phase runs in 2-week sprints. We build the API incrementally, deploy to staging, and run automated tests. You review working software every sprint and adjust priorities as needed.
What ships with every FastAPI project
Every FastAPI backend we build includes these deliverables by default.
We do not hand over code and walk away. Every project includes production-grade infrastructure, documentation, and a runbook. Your team can maintain the API from day one.
All deliverables are stored in your GitHub repository. You have full access and ownership from the first commit.
- Source code in your GitHub repository
- CI/CD pipeline with GitHub Actions and Docker
- Automated test suite with pytest (90%+ coverage)
- OpenAPI (Swagger) documentation auto-generated
- Database migrations with Alembic
- Monitoring setup with Sentry and Datadog
- Deployment to AWS ECS or Kubernetes
- Security audit report (OWASP top 10)
- Runbook with common operations and recovery steps
- 30-day post-launch support and bug fixes
What we ship in this practice.
SaaS subscription backend for a B2B analytics platform
Built a FastAPI backend with Stripe Billing, multi-tenant PostgreSQL, and daily usage aggregation. Reduced API response times by 60% compared to the previous Django backend. Tech stack: FastAPI, SQLAlchemy, Stripe, Redis, Docker.
HIPAA-compliant telemedicine API
Developed a FastAPI backend for a telemedicine startup handling video scheduling, patient records, and e-prescriptions. Passed HIPAA audit on first submission. Tech stack: FastAPI, PostgreSQL, Twilio Video, AWS HealthLake.
Real-time fraud detection API for a fintech company
Built a FastAPI microservice that processes 10,000 transactions per second with sub-50ms latency. Integrated with Stripe Radar and custom ML models. Reduced fraud losses by 35% in the first quarter. Tech stack: FastAPI, Kafka, Redis, scikit-learn.
Inventory management API for an ecommerce brand
Created a FastAPI backend that syncs inventory across Shopify, Amazon, and 3PL warehouses in real time. Eliminated overselling and saved $120K in lost revenue per year. Tech stack: FastAPI, PostgreSQL, Celery, Shopify API.
ML model serving API for a logistics company
Built a FastAPI endpoint that serves a route optimization model to 500 delivery drivers. Reduced delivery time by 18% and fuel costs by 12%. Tech stack: FastAPI, ONNX Runtime, Redis, Docker, AWS ECS.
Internal dashboard API for a real estate firm
Developed a FastAPI backend to aggregate MLS data, property valuations, and client interactions. Reduced manual data entry by 8 hours per week per agent. Tech stack: FastAPI, PostgreSQL, Redis, AWS Lambda.
Why teams hire us.
Fixed price, not hourly
Every FastAPI project gets a fixed quote after the 2-week Roadmap phase. No hourly billing means no surprises. Our average project costs $80K to $250K.
Senior engineers only
Every IRPR engineer has 10+ years of Python experience and has shipped at least 5 FastAPI projects. No juniors. No learning on your dime.
Production-grade code from sprint one
We write tests, type annotations, and documentation from day one. Every sprint ends with a deployable API. No technical debt accumulation.
Full code ownership
You own all source code, infrastructure configs, and documentation. We put everything in your GitHub repository from the first commit.
Compliance built in
We build HIPAA, PCI-DSS, SOC 2, and FERPA compliance into the architecture from day one. No retroactive audits. Our compliance pass rate is 100%.
2-week kickoff
We can start your FastAPI project within 2 weeks of signing. Our async-first workflow means we work across time zones with daily overlap in US business hours.
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.