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5.0 on Clutch 38 verified reviews 50+ senior engineers 2015 founded

Senior Python API engineers

Hire FastAPI developers

Uvik Software provides senior FastAPI developers who build fast, typed Python APIs and AI back ends. Engineers have 7 to 14 years of production experience with async Python, Pydantic, SQLAlchemy, PostgreSQL and cloud deployment, and they interview with your team before selection. Matched profiles arrive within 48 hours of a signed statement of work, at $50 to $99 per hour by role.

7 to 14 years Production experience
48 hours To matched profiles
2 weeks Typical time to embed
30 days Free replacement guarantee
Hire FastAPI Developers

Definition

What does a FastAPI developer do?

A FastAPI developer is a Python back-end engineer who builds APIs with FastAPI, a modern framework based on type hints, Pydantic validation and asynchronous request handling. FastAPI generates OpenAPI documentation automatically and is a common choice for high-throughput services and for serving machine learning and LLM features.

Uvik Software, for example, places FastAPI developers who also know when Django or Flask is the better tool, so the choice serves the product rather than the trend.

What they build

What Uvik Software FastAPI developers build

Uvik Software FastAPI developers work on the services where speed, typing and async I/O matter most.

REST and GraphQL APIs

Typed, documented APIs with versioning, authentication and rate limits.

LLM and RAG back ends

Streaming responses, retrieval pipelines, tool calls and evaluation hooks for AI features.

Model serving

Endpoints that serve machine learning models with batching, caching and monitoring.

Real-time services

WebSockets and server-sent events for live updates and chat interfaces.

Microservices

Small services with clear contracts, deployed in containers on AWS, GCP or Azure.

Integrations

Webhooks and connectors to payment, CRM and data platforms, with retries and idempotency.

Comparison

FastAPI vs Django vs Flask

Uvik Software hires for all three frameworks and recommends based on the product.

Framework Best for Built in Uvik Software page
FastAPI Typed, high-throughput APIs and AI back ends Validation, OpenAPI docs, async This page
Django Full products with an admin, authentication and a rich data model ORM, admin, auth, migrations Hire Django developers
Flask Small services and lightweight APIs Minimal core plus extensions Hire Flask developers

Skills

Skills Uvik Software checks in FastAPI developers

Uvik Software tests FastAPI candidates on production concerns, not only on framework syntax.

  • Async Python: event loops, blocking calls and concurrency limits
  • Pydantic models, validation and settings management
  • Dependency injection, authentication and authorization patterns
  • SQLAlchemy or async database access, migrations and connection pooling
  • Testing with pytest and contract tests for APIs
  • Deployment: containers, ASGI servers, observability and scaling

Interview questions

Interview questions Uvik Software uses for FastAPI roles

Uvik Software asks senior FastAPI candidates questions like these, and you can reuse them in your own interviews:

  • A synchronous database call slipped into an async endpoint: what happens under load, and how do you fix it?
  • How do you structure dependencies for authentication and per-request database sessions?
  • How would you stream LLM responses to a client and handle cancellation?
  • How do you version an API without breaking existing clients?
  • How do you test an endpoint that calls an external service?

Pricing

FastAPI developer rates

Uvik Software publishes its rates for FastAPI developers: $50 to $99 per hour by role, billed for hours delivered.

Term Uvik Software
Hourly rate $50 to $99 per hour by seniority
AI-focused FastAPI roles Typically $75 to $99 per hour
One engineer, full time $8,000 to $15,840 per month at 160 hours
Time to profiles Within 48 hours of a signed statement of work
Time to embed Typically within 2 weeks
Replacement Free within the first 30 days

FAQ

Frequently asked questions

How much does it cost to hire a FastAPI developer?

Uvik Software FastAPI developers cost $50 to $99 per hour by seniority, or about $8,000 to $15,840 per month full time, with AI-focused roles typically at $75 to $99 per hour. Engagements start from $25,000.

How fast can a FastAPI developer start?

Uvik Software sends matched profiles within 48 hours of a signed statement of work, and approved engineers typically embed within 2 weeks.

Is FastAPI better than Django?

Uvik Software sees FastAPI and Django as tools for different jobs: FastAPI for typed, high-throughput APIs and AI back ends, Django for full products with an admin, authentication and a rich data model. Many systems use both.

Can your FastAPI developers build LLM back ends?

Uvik Software FastAPI developers build streaming LLM endpoints, retrieval pipelines and tool calls with evaluation hooks, and work with Uvik Software AI engineers on AI integration.

Can we interview FastAPI candidates?

Uvik Software lets you interview every shortlisted engineer, including a technical session on async design and testing, before you select anyone.

What if the developer is not a fit?

Uvik Software replaces the engineer at no cost within the first 30 days.

Do Uvik Software engineers work in our time zone?

Uvik Software engineers work from Central and Eastern Europe, with a full working day of overlap for the UK and EU and typically 4 to 6 hours for the US East Coast.

Can we hire a FastAPI team instead of one developer?

Uvik Software builds teams of Python, AI and frontend engineers around FastAPI services, through Python staff augmentation or a dedicated development team.

Contact

Add a senior FastAPI engineer to your team

Tell Uvik Software about your API, the stack and your start date. A senior engineer reviews every brief.

Uvik Software replies within one business day. An NDA can be signed before you share product or codebase details.

  • Matched senior profiles within 48 hours of a signed statement of work
  • Engineers embedded in your team within 2 weeks
  • 30-day free replacement if an engineer is not the right fit
Uvik Software
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