Professional FastAPI Development DevelopersFastAPI Development
Production-grade async APIs built in 8-12 weeks. Fixed pricing from $80K. Senior Python engineers only.
IRPR builds production-grade FastAPI backends for APIs, microservices, and data pipelines. We use Pydantic v2 for validation, SQLAlchemy for ORM, and deploy on AWS Lambda or ECS.
Our average FastAPI project ships in 8-12 weeks with fixed pricing from $80K to $250K. We handle compliance (SOC 2, HIPAA, PCI-DSS). You get full code ownership and CI/CD pipelines.
Clients include early-stage SaaS founders who need a scalable API backend, fintech CTOs requiring PCI-DSS compliance, healthcare VPs building HIPAA-compliant data APIs, and ecommerce directors migrating from legacy REST to async endpoints.
Types of software we ship.
REST API Backend
Custom RESTful APIs with FastAPI, JWT auth, rate limiting, and auto-generated OpenAPI docs. Integrates with PostgreSQL or MongoDB.
Async Microservices
Event-driven microservices using FastAPI with message brokers like RabbitMQ or Kafka. Supports CQRS and event sourcing patterns.
Real-Time Data Pipeline
Real-time streaming APIs using FastAPI with WebSocket support. Integrates with Apache Kafka for high-throughput event processing.
Auth & Authorization Service
Dedicated auth microservice with FastAPI, OAuth2, JWT, and social login (Google, GitHub). Includes role-based access control.
Payment Gateway Integration
PCI-DSS compliant payment APIs built with FastAPI and Stripe or Braintree. Implements idempotency keys and webhook handling.
ML Model Serving Endpoint
Deploy ML models as FastAPI endpoints with auto-scaling. Supports TensorFlow, PyTorch, and scikit-learn with model versioning.
Internal API Gateway
Centralized gateway for microservices with rate limiting, caching (Redis), and request validation. Built with FastAPI and Traefik.
Ecommerce Product API
High-performance product catalog API with FastAPI, Elasticsearch integration, and GraphQL support via Strawberry. Handles millions of SKUs.
We build for every business type.
SaaS Startups
Fintech
Healthcare
Ecommerce
Enterprise
FastAPI Development by the Numbers
Real metrics from real FastAPI projects.
IRPR has shipped over 50 FastAPI projects across fintech, healthcare, and ecommerce. Each project meets strict uptime and latency SLAs.
Our teams deliver 2-4x faster than traditional Flask development by leveraging async nature of FastAPI and Pydantic validation.
Generic Shop vs IRPR: FastAPI Done Right
Most dev shops say they know FastAPI. Here's what you actually get with IRPR.
Hiring a generic shop often leads to unclear scope, hourly billing, and junior developers. You end up with incomplete docs and no CI/CD.
IRPR delivers a fixed price from week 2, senior Python engineers only, and a production-grade FastAPI backend with full tooling.
- Unclear scope
- Hourly billing
- Junior developers
- No CI/CD
- No OpenAPI docs
- No testing
- Fixed price from Roadmap
- Senior Python engineers only
- Full CI/CD on GitHub Actions
- Auto-generated OpenAPI docs
- 95%+ test coverage
- Production deployment handled
How We Build Your FastAPI Backend
A repeatable 4-phase process used on 200+ projects.
We start with a 2-week discovery and Roadmap phase where we define architecture, data models, and endpoints. You get a fixed quote and timeline.
Then we build in 2-week sprints with daily standups and weekly demos. After 8-12 weeks, you get a deployed API with full documentation and handover.
What Ships with Every FastAPI Project
Everything you need to own and operate the API.
You don't just get code. You get a turnkey backend that is ready for production from day one. Every FastAPI project includes the following.
- Full source code in your GitHub repo
- CI/CD pipeline with GitHub Actions
- Dockerized deployment (Dockerfile + docker-compose)
- Auto-generated OpenAPI (Swagger) docs
- PostgreSQL database with Alembic migrations
- Async background task runner with Celery
- Sentry error tracking
- Pytest suite with 90%+ coverage
- Deployment runbook and architecture docs
- 30 days post-launch support
What we ship in this practice.
Real-Time Financial Data API
Built a high-throughput FastAPI backend for a fintech startup, processing 10,000 requests per second with under 50ms latency. Stack: FastAPI, Redis, Kafka, AWS ECS, PostgreSQL.
HIPAA-Compliant Health Data API
Delivered a patient data ingestion API for a telehealth platform, reducing data processing time from 4 hours to 10 minutes. Stack: FastAPI, Pydantic, SQLAlchemy, AWS, FHIR.
Ecommerce Product Search API
Built an asynchronous product API with Elasticsearch integration for a mid-market retailer, enabling facet search and real-time inventory updates. Stack: FastAPI, Elasticsearch, Redis, Docker.
SaaS Subscription Management API
Created a subscription lifecycle management API with Stripe integration, automated billing, and webhook handling, reducing churn by 15%. Stack: FastAPI, Stripe, PostgreSQL, Celery.
ML Model Serving API
Designed a FastAPI endpoint for serving a fraud detection model, handling 5,000 concurrent predictions with sub-second response times. Stack: FastAPI, TensorFlow Serving, Kubernetes, Cloud Run.
Internal API Gateway for Microservices
Built a centralized gateway with rate limiting and caching for an enterprise client, reducing API call latency by 60%. Stack: FastAPI, Redis, Traefik, PostgreSQL.
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 scope creep, no surprise invoices.
Senior Python Engineers Only
Our team averages 10+ years of Python experience. Every developer has shipped production FastAPI apps handling thousands of requests per second.
Production-Ready from Day One
We ship with CI/CD, auto-generated OpenAPI docs, 90%+ test coverage, and Sentry monitoring. Your API is ready to deploy on day 1 of handover.
Full Code Ownership
You own every line of code. We deliver the entire repository, documentation, and deployment runbooks. No vendor lock-in.
Compliance Built In
We build FastAPI backends that are HIPAA, PCI-DSS, and SOC 2 compliant. We use encryption, audit logging, and access controls out of the box.
8-12 Week Delivery
We deliver a production-grade FastAPI MVP in 8-12 weeks. Our process is tested on 200+ projects across 50+ countries.
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.