Top FastAPI Development FirmFastAPI Development
We build high-performance backends with FastAPI. 200+ products shipped, 8-12 week MVPs, fixed pricing.
IRPR is a top FastAPI development firm. We build asynchronous, type-safe APIs using FastAPI, Pydantic, and SQLAlchemy for clients in 50+ countries.
Every project ships in 8-12 weeks with a fixed price between $80K and $250K. We handle compliance for healthcare (HIPAA), fintech (PCI-DSS), and SaaS (SOC 2).
Startups hire us to launch their SaaS MVP. Mid-market companies hire us to rebuild legacy REST APIs. Enterprises hire us to build microservice architectures that scale to 1M+ requests per day.
Types of software we ship.
SaaS Backend
Multi-tenant FastAPI backends with Stripe billing, Auth0 authentication, and async workers for email and data processing.
REST API
RESTful APIs with FastAPI, OpenAPI docs, rate limiting, and JWT authentication. Deployed on AWS ECS with auto-scaling.
Microservices
Event-driven microservices using FastAPI, RabbitMQ or Kafka, and Docker. Each service independently deployable and monitored.
Data Pipeline API
APIs that ingest, transform, and serve data from sources like Snowflake, BigQuery, or S3. Built with FastAPI and Celery.
Real-time API
WebSocket and SSE endpoints using FastAPI's async support. Used for live dashboards, chat, and real-time notifications.
Admin Dashboard Backend
Role-based admin panels with FastAPI, SQLAlchemy, and React frontends. Includes audit logs and export to CSV/PDF.
Ecommerce API
Cart, checkout, and inventory management APIs built with FastAPI and Stripe. Handles 10K+ concurrent users.
Integration API
APIs that connect to third-party services like Salesforce, HubSpot, and Slack. Built with FastAPI and OAuth2.
We build for every business type.
SaaS companies
fintech
healthcare
ecommerce
enterprise
Why choose a top FastAPI development firm
FastAPI delivers 3x faster performance than Flask and automatic interactive docs out of the box.
FastAPI is built on Python 3.10+ async features. It handles 50K+ requests per second on a single instance. Combined with Pydantic, you get automatic request validation and serialization. This means fewer bugs and faster development cycles.
IRPR has shipped 200+ FastAPI projects. Every API includes OpenAPI docs, Sentry error tracking, and CI/CD pipelines on GitHub Actions. We write tests with pytest and achieve 95%+ code coverage. Your API is production-ready from day one.
How IRPR differs from other FastAPI firms
Most agencies bill hourly and deliver late. IRPR gives you a fixed price and a clear timeline.
We start every project with a 2-week Roadmap phase. You get a fixed price, a detailed spec, and a delivery date. No scope creep, no surprise invoices. Our average project ships in 10 weeks.
Every IRPR engineer has 10+ years of experience. We do not outsource. Your project gets a senior lead, a product manager, and a QA engineer. Communication happens daily in Slack and weekly in video calls.
- Hourly billing with no cap
- Junior developers on your project
- No fixed timeline
- No compliance expertise
- Code ownership is unclear
- No post-launch support
- Fixed price from day one
- Senior engineers only (10+ years)
- 8-12 week delivery guarantee
- HIPAA, PCI-DSS, SOC 2 expertise
- Full code ownership transferred
- 30-day post-launch support included
Our FastAPI development process
From idea to production in 8-12 weeks. Here is exactly how we build your API.
Every project follows a 4-phase process: Idea, Roadmap, Product, Release. Each phase has clear deliverables and a go/no-go decision point. You are never locked in.
During the Product phase, we build in 2-week sprints. You see working code every sprint. We deploy to staging on AWS after each sprint. By week 8, you have a production-ready API.
What ships when you hire IRPR
You get a complete, production-ready backend. Not just code.
Every project includes infrastructure, monitoring, and documentation. Your team can take over immediately. We provide a 30-day handover period with live support.
We deploy on AWS using Terraform. Your API runs on auto-scaled ECS Fargate tasks. We set up CloudWatch alarms, Sentry error tracking, and Datadog dashboards. You will know about issues before your users do.
- Source code in your private GitHub repo
- CI/CD pipeline on GitHub Actions
- Sentry error and performance monitoring
- Datadog dashboards for API metrics
- OpenAPI (Swagger) docs auto-generated
- pytest test suite with 95%+ coverage
- Docker Compose for local development
- Terraform scripts for AWS infrastructure
- Postman collection for manual testing
- 30-day post-launch support included
What we ship in this practice.
SaaS backend for a B2B analytics platform
Built a multi-tenant FastAPI backend with Stripe billing and Auth0. Handles 50K requests per day. Reduced time-to-market by 4 months. Tech stack: FastAPI, PostgreSQL, Redis, AWS ECS.
Payment processing API for a fintech startup
Developed a PCI-DSS compliant FastAPI API that processes 10K transactions per day. Integrated with Stripe and Plaid. Passed security audit in 2 weeks.
Telemedicine backend for a healthcare platform
Built a HIPAA-compliant FastAPI backend with WebRTC video scheduling and EHR integration. Reduced patient wait time by 40%. Tech stack: FastAPI, PostgreSQL, Twilio, AWS.
Product catalog API for an ecommerce brand
Created a FastAPI API serving 1M product SKUs with full-text search and real-time inventory. Handles 10K concurrent users during Black Friday. Tech stack: FastAPI, Elasticsearch, Redis, Stripe.
Real-time dashboard for a logistics company
Built a FastAPI WebSocket backend that streams GPS data from 500+ trucks. Reduced latency from 5 seconds to 200ms. Tech stack: FastAPI, Redis Pub/Sub, React, Mapbox.
Integration API for a real estate platform
Developed a FastAPI API that syncs MLS listings across 10+ data sources. Reduced manual entry by 15 hours per week. Tech stack: FastAPI, PostgreSQL, Celery, AWS SQS.
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 surprise invoices, no scope creep charges. You know the exact cost before we write a line of code.
Senior engineers only
Every IRPR engineer has 10+ years of experience. No junior developers, no offshore teams. Your project gets a lead engineer who has shipped FastAPI APIs for healthcare, fintech, and SaaS clients.
8-12 week delivery
We ship production-ready FastAPI APIs in 8-12 weeks. Our average project delivers in 10 weeks. You see working code every 2 weeks during sprint reviews.
Full code ownership
You own 100% of the source code, infrastructure scripts, and documentation. No licensing fees, no vendor lock-in. Your team can take over development on day one.
Compliance built in
We have built FastAPI APIs for HIPAA, PCI-DSS, and SOC 2 compliance. We implement encryption at rest and in transit, audit logging, and role-based access control by default.
Post-launch support included
Every project includes 30 days of post-launch support. We fix bugs, handle performance tuning, and help your team ramp up. After 30 days, we offer ongoing maintenance at a fixed monthly rate.
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.