Best FastAPI Development Firm forHigh-Performance APIs
We build production-grade FastAPI backends for SaaS, fintech, and healthcare. Ship your MVP in 8-12 weeks with a fixed price.
IRPR is the best fastapi development firm for teams that need reliable, async-native backends. We use FastAPI with Python 3.11, PostgreSQL, Redis, and Docker to build APIs that handle 10K+ requests per second without bottlenecks.
Every project ships in 8-12 weeks with a fixed price ranging from $80K to $250K. We handle compliance out of the box: HIPAA for healthcare, SOC 2 for SaaS, and PCI-DSS for fintech. No surprise invoices, no scope creep.
CTOs migrating from Django or Flask hire us to modernize their stack. Startup founders use us to launch MVPs that can scale. Healthcare and fintech companies choose us because we understand HIPAA and PCI-DSS requirements from day one.
Types of software we ship.
REST API Development
Build RESTful APIs with FastAPI, automatic OpenAPI docs, and Pydantic validation. Integrates with any frontend or third-party service.
GraphQL API Development
Create GraphQL backends using Strawberry or Graphene on top of FastAPI. Real-time subscriptions and efficient data fetching.
WebSocket Server Development
Develop real-time WebSocket services for chat, live dashboards, and notifications using FastAPI's native WebSocket support.
Microservices Backend
Design and deploy a distributed backend with FastAPI microservices, service discovery, and message queues like RabbitMQ or Celery.
Real-Time Data Processing API
Combine FastAPI with Kafka or SSE to stream real-time data for analytics, trading, or IoT platforms.
AI/ML Model Serving API
Serve machine learning models with FastAPI, async inference, and model versioning. Integrates with TensorFlow, PyTorch, or OpenAI APIs.
Third-Party Integration API
Build middleware APIs that connect your system to Stripe, HubSpot, Salesforce, or custom partners. Handle webhooks, retries, and rate limiting.
E-Commerce Backend API
Create a headless e-commerce backend with FastAPI, inventory management, order processing, and payment gateway integration.
We build for every business type.
SaaS Platforms
Fintech
Healthcare
E-Commerce
Data & Analytics
Why IRPR is the Best FastAPI Development Firm
We deliver FastAPI backends that are fast, secure, and production-ready from day one.
Our team has shipped over 200 products across 50 countries using FastAPI as the backbone. Every backend includes async database access, automatic OpenAPI documentation, and a full test suite with 90%+ coverage.
We integrate FastAPI with Celery for background task processing, Redis for caching and rate limiting, and Docker Compose for local development. Deployment targets AWS ECS, Azure App Service, or Google Cloud Run with zero-downtime deployments.
The Difference Between a Generic Dev Shop and the Best FastAPI Development Firm
Hiring the wrong team costs time and money. Here's how IRPR stands apart.
Most dev shops treat every project like a cookie-cutter. They give you an hourly rate and hope the project never ends. We don't do that.
IRPR uses a fixed price model based on a detailed Roadmap (week 2). You know exactly what you get, how much it costs, and when it ships. No scope creep. No surprises.
- no fixed price
- hourly billing with no cap
- no compliance expertise (HIPAA/PCI/SOC 2)
- junior developers or offshore teams
- no async-native design
- delivery slips by months
- fixed price after Roadmap (week 2)
- average MVP in 8-12 weeks
- built-in HIPAA, PCI-DSS, SOC 2 compliance
- senior engineers only (10+ years average)
- async FastAPI with Pydantic and SQLAlchemy
- 98% on-time delivery track record
How We Build Your FastAPI Backend
A transparent process from idea to production.
Every project follows the same four-phase framework: Idea, Roadmap, Product, Release. You stay in control at every step.
We ship working code incrementally, not a big bang. You see progress every week, not just at the end.
What Ships with Every FastAPI Project
No hand-waving. Every deliverable is documented and tested.
You get more than just code. You get a production-ready system that your team can maintain and extend from day one.
We include everything needed to run in production: monitoring, logging, CI/CD, and security scanning.
- Source code in your private GitHub repository
- OpenAPI 3.0 spec auto-generated by FastAPI
- PostgreSQL database schema with Alembic migrations
- Celery worker setup for background tasks (email, reports, webhooks)
- Redis caching layer for frequently accessed endpoints
- CI/CD pipeline on GitHub Actions with linting, tests, and deployment
- Docker Compose configuration for local development
- Load testing report using Locust or k6 (200 concurrent users minimum)
- Sentry error tracking and Datadog APM integration
- One-year maintenance warranty for critical bug fixes
What we ship in this practice.
Real-Time Fraud Detection API
Built a FastAPI backend that processes 500 transactions per second with real-time scoring. Reduced fraud false positives by 40% using a Celery pipeline and Redis cache. Industry: fintech.
Healthcare Appointment Scheduling API
Created a HIPAA-compliant FastAPI service for a telemedicine startup. The API handles 15K appointments daily with async database writes and HL7 integration. Industry: healthcare.
Social Media Feed API
Developed a personalized content feed using FastAPI and vector embeddings. The API delivers posts in under 50ms for 100K daily active users. Industry: media.
Payment Processing Microservice
Implemented a PCI-DSS compliant FastAPI microservice that integrates with Stripe and Adyen. Processed $5M in monthly transactions with 99.9% uptime. Industry: ecommerce.
Shipping Cost Calculator API
Built a high-performance shipping rate API for a logistics company. The FastAPI backend queries multiple carriers and returns rates in under 200ms, saving 20% on shipping costs. Industry: logistics.
User Authentication Service
Created a multi-tenant authentication service with OAuth2, JWT, and MFA support using FastAPI. Handles 10K sign-ups per day with zero downtime. Industry: saas.
Why teams hire us.
Fixed Price, Not Hourly
Every FastAPI project gets a fixed quote after the Roadmap phase (week 2). No hourly billing, no surprise invoices, no scope creep charges. You know the cost before we write a line of code.
Senior Engineers Only
Our team averages 12 years of experience building backends in Python and FastAPI. No junior developers, no offshore outsourcing. Every engineer has shipped production APIs handling millions of requests.
Compliance Built In
We build HIPAA, PCI-DSS, and SOC 2 compliance into every layer of the API. From encryption at rest to audit logs, we handle the regulatory requirements so you don't have to.
Async-Native by Default
We use FastAPI's async capabilities from day one. Endpoints are asynchronous, database queries use async SQLAlchemy, and background tasks run in Celery. Your API scales without rewrites.
Full Ownership of Code
You own every line of code, spec, test, and deployment configuration. No licensing fees, no lock-in. Your team can take over on day one with clear documentation and a running CI/CD pipeline.
12-Week Ship Guarantee
We ship working FastAPI backends in 8-12 weeks, guaranteed. Our track record: 98% of projects delivered on time. If our team misses the deadline, the next two weeks of development are free.
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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