Leading FastAPI Development DevelopersFastAPI Development
We build fast, async APIs with FastAPI and Python. Ship your MVP in 8-12 weeks at a fixed price.
IRPR is a leading FastAPI development developer. We build production-grade APIs using FastAPI, Python 3.12, async workers, PostgreSQL, Redis, and Docker. Every API is designed for high throughput and low latency from day one.
We ship your FastAPI MVP in 8-12 weeks. Fixed pricing starts at $80K and goes up to $250K depending on scope. Our APIs meet compliance standards like HIPAA, PCI-DSS, and SOC 2. We handle deployment, monitoring, and documentation as part of every project.
Founders building SaaS platforms hire us to replace slow Django or Flask backends. CTOs at fintech companies need FastAPI for real-time transaction processing. Product managers at healthcare startups want HIPAA-compliant APIs with async data ingestion. Enterprise architects choose us for microservices migration.
Types of software we ship.
FastAPI REST API
RESTful endpoints with Pydantic validation, async database access, and auto-generated OpenAPI docs.
FastAPI Microservices
Event-driven microservices with RabbitMQ, Celery, and Docker Compose for horizontal scaling.
FastAPI GraphQL API
GraphQL layer built on FastAPI with Strawberry, supporting subscriptions and complex queries.
FastAPI WebSocket Server
Real-time WebSocket servers for chat, live dashboards, and streaming data using FastAPI's built-in support.
FastAPI Admin Panel
Admin dashboards with SQLAdmin, user roles, audit logs, and export to CSV/Excel.
FastAPI Data Pipeline
Batch and streaming data pipelines using FastAPI, Pandas, and Apache Kafka for ETL workloads.
FastAPI Auth System
OAuth2, JWT, and session-based authentication with Passlib, bcrypt, and Redis session store.
FastAPI Integration Layer
API integrations with Stripe, Salesforce, HubSpot, and Twilio using httpx and async webhooks.
We build for every business type.
SaaS platforms
fintech
healthcare
ecommerce
enterprise
Why choose leading FastAPI development developers at IRPR
We have shipped over 200 products using FastAPI since version 0.45.
Our senior engineers have built FastAPI backends for fintech apps processing 10,000 requests per second. We use async SQLAlchemy, Alembic for migrations, and pytest with 90%+ test coverage. Every API gets a CI/CD pipeline on GitHub Actions with automatic deployment to AWS ECS or DigitalOcean.
We write OpenAPI specs that are accurate enough to generate client SDKs. Our APIs include rate limiting with Redis, structured logging with Loguru, and error tracking with Sentry. You get a production-ready API, not a prototype.
How IRPR differs from other FastAPI development developers
Most agencies bill hourly and deliver late. We do the opposite.
Generic dev shops often start coding without a clear roadmap. They use vague estimates and change scope mid-project. You end up with a slow API that needs rewrites.
IRPR builds your FastAPI API in two phases. First, a 2-week Roadmap phase where we define every endpoint, data model, and integration. Then a fixed-price build phase with weekly demos. No surprises.
- Hourly billing with no cap
- No roadmap before coding
- Uses Flask or Django REST
- No async, slow endpoints
- No CI/CD or monitoring
- You own nothing until paid
- Fixed price from week 2
- Detailed Roadmap with endpoints and models
- FastAPI with async workers
- CI/CD on GitHub Actions, Sentry, Loguru
- Source code in your repo from day one
- HIPAA, PCI-DSS, SOC 2 compliance built in
Our FastAPI development process: 4 phases
From idea to production in 8-12 weeks.
Phase 1 is the Roadmap. We define every API endpoint, data model, and third-party integration. You get a complete specification with wireframes and a fixed price.
Phase 2 is the Build. Our senior engineers write async Python code with full test coverage. You see working endpoints every Friday.
What ships with your FastAPI project
Every project includes these deliverables by default.
You get a production-ready API with full documentation and deployment infrastructure. No hidden costs or missing pieces.
Our team stays on Slack for 2 weeks after launch to handle any questions or hotfixes.
- Source code in your private GitHub repo
- CI/CD pipeline with GitHub Actions
- Docker Compose for local development
- PostgreSQL database with Alembic migrations
- Redis for caching and rate limiting
- Sentry error tracking and Loguru logging
- OpenAPI 3.0 spec with Swagger UI
- Postman collection with example requests
- Load test report with 10,000 concurrent users
- Deployment to AWS ECS or DigitalOcean
What we ship in this practice.
Real-time payment processing API
Built a FastAPI backend for a fintech startup processing 5,000 transactions per minute. Used async SQLAlchemy, Stripe SDK, and Redis for idempotency keys. Reduced payment failure rate by 40%.
HIPAA-compliant patient data API
Developed a FastAPI API for a telemedicine platform handling PHI. Implemented audit logging, encryption at rest, and role-based access. Passed HIPAA audit on first attempt.
Multi-tenant SaaS backend
Created a FastAPI backend for a B2B SaaS with 200 tenants. Used PostgreSQL schemas for isolation, Celery for background jobs, and Stripe for billing. Onboarded 50 tenants in the first month.
Ecommerce product catalog API
Built a FastAPI catalog API for an online retailer with 50,000 SKUs. Integrated with Shopify and Magento via webhooks. Reduced product update latency from 5 seconds to 200 milliseconds.
Real estate MLS data ingestion
Designed a FastAPI pipeline ingesting MLS data from 10 sources. Used Kafka for streaming, PostgreSQL for storage, and Elasticsearch for search. Processed 1 million listings per day.
EdTech assessment engine API
Developed a FastAPI backend for adaptive testing with 10,000 concurrent users. Used async workers, Redis for session state, and FERPA-compliant data handling. Scored 99.9% uptime during peak exam periods.
Why teams hire us.
Senior engineers only, no juniors
Every engineer on your project has 8+ years of Python experience. We do not outsource or use offshore teams. You talk directly to the person writing your code.
Fixed price from week 2
After the 2-week Roadmap, you get a fixed price for the entire build. No hourly billing, no scope creep charges. If we add features, we tell you the cost upfront.
8-12 week MVPs
We ship production-ready FastAPI APIs in 8-12 weeks. Our record is 6 weeks for a Fintech MVP with Stripe integration. You are not stuck in a 6-month development cycle.
Compliance built in, not bolted on
We build HIPAA, PCI-DSS, and SOC 2 compliance into the architecture from day one. Audit logging, encryption, and access controls are part of every API.
Full code ownership from day one
You own the source code from the first commit. We host it in your GitHub organization. No licensing fees, no IP disputes, no vendor lock-in.
Post-launch support included
We stay on your Slack for 2 weeks after launch to handle hotfixes and questions. We also provide a 1-hour walkthrough for your engineering team.
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.