Hire FastAPI developers

Develop high-performance APIs with expert FastAPI developers. Ensure security and speed—hire now and onboard as fast as this week.

Daniel
Full-stack Web Developer
Spain/(GMT -8:00)
Daniel is a backend-leaning Python engineer who builds Django and FastAPI products end to end. He led an internal LLM platform for 20,000 employees, cutting API latency from 4 seconds to 140ms, and earlier owned a geospatial adventure app with PostGIS, Mapbox, and React from architecture through launch.
Experience
13 years
Availability
Part-time & Full-time
FastAPIPythonReactDjangoTypescriptAWSPostgreSQLOpenAIWeb scrapingAIRabbitMQCeleryRedisElasticSearchDjango RESTTailwind CSSNode.jsLLMLangChainNext.jsDockerTerraformKubernetesCI/CDAnsibleAzure DevOpsMongoDBContainersDigitalOceanFirebaseGCPAI agent developmentAmazon S3Amazon EC2Amazon CloudFrontAmazon RDSJavaScriptClaude CodeSupabase
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Adrian
Back-end Web Developer
Ukraine/(GMT +2:00)
Adrian is a Python backend engineer who builds FastAPI and Django systems, from fintech services to real-time data pipelines. Recently he set up the backend foundations for a content platform that uses OpenAI and Claude to generate assets from videos, transcripts, and files, with RAG, guardrails, and async workflows.
Experience
11 years
Availability
Part-time & Full-time
FastAPIDjangoPythonFlaskLinuxJavaScriptSQLMariaDBC++MongoDBDelphiPostgreSQLDockerSQLAlchemyPySparkApacheNumPyETLNode.jsServerless ComputingCircleCIAmazon EC2BigQueryFirebase
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Alex
Full-stack Web Developer
Kenya/(GMT +3:00)
Alex is a Python and React full-stack engineer who leads a Django-based data annotation platform used by 100,000+ experts to produce training data for advanced AI models. He cut p95 API times by 50% and built a runtime-configurable annotation UI plus embedding-based search for matching experts to tasks.
Experience
7 years
Availability
Full-time
FastAPIPythonReactAWSDjangoAmazon RDSPostgreSQLAWS CodeBuildAmazon ECSAmazon S3RedisElastiCacheDjango RESTNext.jsC++GraphQLAmazon EC2Apollo GraphQLUser-centered designTypescriptStripe APIOAuthNode.jsKafkaReact NativeExpo
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Eduardo
Back-end Web Developer
Spain/(GMT +1:00)
Eduardo is a Python backend engineer who works across Django, FastAPI, and AWS. Recently he built an ML platform that exposed data science models to other services, setting up Kubernetes releases, AWS Batch jobs, Terraform infrastructure, and SDKs for both Java and Python teams.
Experience
13 years
Availability
Full-time
FastAPIPythonDjangoFlaskAngularPHPDrupalSymfonyDjango RESTGWTJSONCelerySeleniumNumPyAWSMySQLPostgreSQLMongoDBDockerFirebaseDocker ComposeWeb scrapingPlaywrightBeautifulSoup
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Andrii
Full-stack Web Developer
Paraguay/(GMT -3:00)
Andrii is a React and TypeScript engineer who often works full stack with Python and Node.js. He rebuilt a fintech analytics frontend from class-based React to TypeScript and a Storybook component library, then later built the frontend for an AI audit and data analysis product from scratch and helped move an LLM voice-calling system from no-code to AWS.
Experience
12 years
Availability
Part-time & Full-time
FastAPIReactExpress.jsPythonTypescriptNode.jsAngularREST APIMySQLPostgreSQLMongoDBAWSGCPDockerLLMNext.jsOpenAIJavaScriptCI/CDGraphQLAPIAmazon EC2DynamoDBAmazon S3Amazon ECS
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Alex
AI Engineer
Brazil/(GMT -3:00)
Alex is an AI engineer working in Python and AWS who builds RAG and multi-agent systems for enterprise knowledge and decision support. He led a Slack knowledge assistant that searched 50,000+ documents, answered 10,000+ daily queries in under 2 seconds, and a causal measurement platform processing 50M+ events a day.
Experience
12 years
Availability
Part-time & Full-time
FastAPIPythonLLMAIAWSNLPGCPAWS LambdaNode.jsRAGLangChainOpenAI APIPineconeAmazon S3PostgreSQLAmazon ECSAmazon RDSAWS SageMakerRedisPydanticNumPyPyTorchSnowflakeKafkaElasticSearchVertex AITensorflowAirflowLangGraphLLaMA
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Emmanuel
Full-stack Web Developer
United States/(GMT -6:00)
Emmanuel is a full-stack engineer working in Node.js, React, and React Native who has led mobile products from architecture to release. He designed a vehicle diagnostics app from scratch, built FHIR-based healthcare ingestion APIs on Azure Functions, and wrote smart contracts for consent management and escrow.
Experience
10 years
Availability
Full-time
FastAPIReactReact NativeNode.jsExpress.jsAWSNext.jsAngularMongoDBMySQLMicrosoft AzureRedisFirebaseAPI TestingExpoAPIReduxTwilio APIDockerTypescriptAzure FunctionsOAuthCI/CDStripe APIPostgreSQLSupabaseGoogle API and ServicesAILLM
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Alp
Full-stack Web Developer
Turkey/(GMT +3:00)
Alp is a full-stack engineer working mainly in Python, FastAPI, Next.js and React who often builds products solo. Recently he shipped a document-to-report system that turns technical files into structured failure-analysis reports with evaluated multi-agent workflows, and built a SaaS that makes Form 5500 filings searchable for financial advisors.
Experience
11 years
Availability
Full-time
FastAPIPythonTypescriptJavaReactNext.jsLLMRAGGCPLangChainAI agent developmentAWSNode.jsPostgreSQLTerraformRedisMongoDBDjangoDockerKubernetesFirebaseNest.jsKafkaRabbitMQOracleAI
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Alejandro
Full-stack Web Developer
Mexico/(GMT -6:00)
Alejandro is a full-stack engineer working in React Native, React, Python and Go who has repeatedly joined fintech products as a founding engineer. He launched investing and earned-wage apps from scratch to 50,000+ and 100,000+ downloads, then doubled account-opening completion from 20% to 40% and cut support tickets by 80%.
Experience
11 years
Availability
Part-time
FastAPIReactReact NativePythonDjangoTypescriptCSSVue.jsNode.jsPostgreSQLAWSDockerExpress.jsJavaScriptWeb SocketsD3.jsStorybookMySQLRedisAmazon S3Google Map APIElasticSearchMongoDBNext.jsTerraformTailwind CSSAIAsyncAPI
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Developers who got their wings at

How it works

How to hire a FastAPI developer in days, not months

Fill in a short form

Tell us about your FastAPI project, timeline and hours, then look through our vetted developers.

Take a 30-minute call

A Lemon.io matching expert goes over your needs and gives you a budget estimate.

Meet 1–3 candidates

You get 1–3 developer profiles, usually within 24 hours. Interview them the way you normally would.

Start working

Your developer joins your team part-time or full-time and works directly with you.

Hire FastAPI developer

Testimonials

Start to finish in under a week with zero wasted time

Reached out on Monday evening, connected Tuesday morning, had four qualified candidates by Wednesday.

Brian DeSpainCEO, 10X ERP

High quality, well-qualified developers

We had an excellent experience. Process is fast from the initial intake through setting up payment.

Katie RoyExecutive Director, The SPEND Initiative

7 developers hired in 24 hours

The developers helped us speed up. They quickly learned their part of the app and we’re grateful for their contribution.

Conor MackenDirector of Engineering, tvScientific

Lemon.io does the hiring work. You pick the FastAPI developer.

We vet every developer

Every FastAPI developer passes a live interview with a senior engineer. We accept 1.2% of applicants.

No juniors, 3+ years

We hand-pick your matches

A matching expert picks people by your stack, domain and time zone, and tells you why each one fits.

Human, not a filter

We handle the paperwork

We handle contracts, NDAs and invoices. You pay Lemon.io, and we pay your developer.

You own the IP

We stay after you hire

Your Lemon.io manager stays in touch with you both. If it doesn't work out, we find a replacement for free.

Free replacement

Hire FastAPI developer

The lemon tea

FastAPI developers for Python APIs and AI backends

Async Python is easy to start and easy to get wrong. Our FastAPI developers have taken it to production, from model serving to plain REST APIs.

Async done right

Candidates must spot a blocking call inside an async endpoint and explain what it does to every request queued behind it.

We match, or you search

Let our team pick, or search the database yourself for FastAPI with Django, Docker or PostgreSQL and ask for intros.

Hours that overlap

We match developers by time zone, so your FastAPI developer is online for standups and code reviews.

What you should know about modern FastAPI devs

by Inna Chernova

Recruiting Lead at Lemon.io

Verified Expert

Hiring Guide: FastAPI Developers

If you’re planning to hire FastAPI developers, you’re looking for specialists who can build high-performance Python web applications and APIs using one of the fastest-growing frameworks in the modern backend ecosystem. FastAPI is known for its incredible speed, automatic documentation, and ease of integration with modern tools, making it a top choice for businesses building scalable APIs and data-driven applications. Whether you’re developing a new SaaS product, an AI-driven backend, or a microservices architecture, experienced FastAPI developers can make your infrastructure efficient, secure, and future-ready.

Why Hire FastAPI Developers?

FastAPI is built on modern Python standards such as async/await and uses Pydantic for data validation, making it a developer favorite for building RESTful and GraphQL APIs that are both fast and reliable. FastAPI developers can deliver solutions up to 2–3× faster than traditional frameworks like Flask or Django when handling concurrent requests. Hiring a FastAPI expert means your system will not only be fast but also maintainable, type-safe, and cloud-ready.

Core Responsibilities of FastAPI Developers

Design, develop, and maintain RESTful APIs and microservices using FastAPI.

Implement asynchronous I/O operations for optimal performance and scalability.

Integrate with databases such as PostgreSQL, MongoDB, or Redis using ORM tools like SQLAlchemy or Tortoise ORM.

Ensure API authentication, security, and data validation using OAuth2, JWT, and Pydantic models.

Write efficient test cases using PyTest and automate CI/CD pipelines.

Deploy applications on AWS, GCP, or Azure with Docker and Kubernetes.

Collaborate with front-end and DevOps teams for seamless integration and delivery.

Key Technical Skills to Look For

Languages & Frameworks: Python 3.9+, FastAPI, Flask, Django, SQLAlchemy, Pydantic.

API Design: REST, GraphQL, WebSockets, and OpenAPI documentation.

Databases: PostgreSQL, MongoDB, MySQL, Redis.

Asynchronous Programming: asyncio, aiohttp, and uvicorn for non-blocking I/O.

Authentication: OAuth2, JWT, API tokens, and session management.

Testing: PyTest, UnitTest, Mocking frameworks.

DevOps Tools: Docker, Kubernetes, GitHub Actions, CI/CD pipelines.

Cloud Deployment: AWS Lambda, Google Cloud Run, Azure Functions.

When to Hire FastAPI Developers

When building modern, high-speed APIs or microservices architectures.

When integrating machine learning models into production environments.

When migrating from Flask or Django to a more performant Python framework.

When developing real-time applications like chat apps or IoT dashboards.

When scaling backend infrastructure for AI, analytics, or automation platforms.

How to Hire the Right FastAPI Developer

1. Define Your Project Scope

Determine whether you need a backend developer who can focus solely on API performance or a full-stack engineer comfortable with front-end frameworks like React or Vue. Define your database and infrastructure requirements early to find candidates with the right expertise.

2. Evaluate Technical Experience

Look for developers with proven experience in building production-level APIs using FastAPI. Ask for GitHub or portfolio examples showcasing code written with Pydantic models, dependency injection, and async operations.

3. Interview Questions

How does FastAPI compare to Flask or Django in terms of performance?

Explain how Pydantic is used for request validation in FastAPI.

What’s the role of async/await in FastAPI applications?

How would you secure an API using JWT in FastAPI?

How do you handle background tasks or dependency injection?

4. Technical Assessment

Ask candidates to build a simple REST API with FastAPI that performs CRUD operations and includes authentication. Evaluate their code structure, understanding of dependency injection, and use of async functionality.

Average Cost of Hiring FastAPI Developers

FastAPI developers’ rates vary based on skill level, location, and project scope. Typical hourly rates include:

Junior Developers (1–3 years): £35–£55/hour

Mid-Level Developers (3–6 years): £60–£95/hour

Senior Developers (7+ years): £100–£140/hour

When you hire through Lemon.io, you get access to pre-vetted FastAPI developers experienced in scalable architecture, asynchronous programming, and modern deployment practices.

Why Hire Through Lemon.io?

Lemon.io connects you with elite FastAPI developers who excel at building robust, high-performance APIs. All our developers are tested for their technical depth, async capabilities, and collaboration skills. From prototype to production, our engineers help you scale efficiently.

Hire Expert FastAPI Developers →

Hire Python Developers – Build robust backend systems with modern Python frameworks.

Hire Django Developers – Develop secure and scalable web apps with Django.

Hire Flask Developers – Create lightweight APIs and web applications quickly.

Hire DevOps Engineers – Automate and scale your FastAPI applications efficiently.

Hire Backend Developers – Strengthen your API architecture with experienced engineers.

FAQs About Hiring FastAPI Developers

What is FastAPI used for?

FastAPI is a modern Python framework used for building APIs, web applications, and microservices that require high speed and asynchronous capabilities.

Is FastAPI faster than Flask or Django?

Yes. FastAPI is built on ASGI and uses async programming, making it significantly faster than Flask and Django in handling concurrent requests.

Can FastAPI be used for production?

Absolutely. FastAPI is production-ready and trusted by major companies for performance-critical applications, including AI and IoT platforms.

What are the advantages of FastAPI?

FastAPI offers automatic documentation, async support, strong type checking, and superior performance for modern backend systems.

Can I hire remote FastAPI developers through Lemon.io?

Yes. Lemon.io connects you with top remote FastAPI developers who can integrate seamlessly into your projects and deliver high-quality code.

Book a call with an expert so you can be sure in your hiring strategy

Book a call

Why hire FastAPI developers

FastAPI developers give your Python product a typed, documented API from day one.

Model serving

Wrap ML models and LLM calls in endpoints your app can rely on.

Typed contracts

Pydantic models that validate input and generate docs your front end can trust.

Flask to FastAPI

Move an aging Python API to async without a risky big-bang rewrite.

Background jobs

Queues and workers for the slow work that shouldn't block a request.

Case studies

Aerospace

The experience with Lemon.io has been fantastic. The interview process has been good, the caliber of people – excellent and integration has been very smooth.

Marc HorowitzCOO of SkyFi

Explore case

Telecommunications

We needed extra developers to clean off all these bugs so the company could skyrocket.

Conor MackenDirector of Engineering

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We needed extra AI engineers to keep our ambitious project running.

Mike LukimanFounding Senior Software Engineer at Everstar.ai

Explore case

Frequently asked questions

A strong FastAPI developer knows more than just Python, they understand what makes it different from the rest. If you want to hire someone, we heavily recommend going for people who have at least some FastAPI experience in their projects: it will allow you to evaluate what they are really worth.

Make sure to explore the FastAPI Community, where enthusiastic users chat and share information.

Also, delve into wider Python communities on webdev and API creation side. There is a chance you might find good pros out there. Also, try your luck with networks like LinkedIn and online job boards.

If you are looking to find FastAPI talent fast, platforms such as Lemon.io help in providing the pre-vetted pool of FastAPI developers for quick onboarding.

We’re aware you want full confidence in your developer. For that reason, we provide a no-risk trial to ensure you have the ideal developer for your project. Our paid trial guarantees 20 hours when you can get the FastAPI developer working on your real project to determine their ability. The trial session ensures you test their coding style, problem-solving attitude, and communication skills.

Furthermore, we guarantee a zero-risk replacement on our FastAPI developers. Suppose you’re not content with their work for any reason, Lemon.io will offer a swift replacement at once.

Yes, there are many openings available for backend and FastAPI developers. FastAPI is a modern (high-performance) web framework for building APIs with Python 3.6+ based on standard Python type hints…, a simple, easy to learn Python web framework aimed at crafting web applications and APIs. It has grown in popularity because of how fast and efficient it is to set up. Many Python developers use FastAPI because of this type hinting, automatic documentation generation and asynchronous feature.

With more and more companies migrating towards building microservices & API-driven architectures the demand for experienced FastAPI developers is growing on a regular basis.

We have a network of talented FastAPI developers who are prepared to share their expertise with your project.

Our average response time to match you with an available FastAPI developer is 1-2 days. From there, it’s a couple more days if you want to run your own interview. Or, you can sign them up and start working right away. Actually, 70% of our clients are happy with the first dev they get.

Given how popular FastAPI developers are, they usually charge hourly fees between $60 to $140. Of course, this range can be influenced by a lot of factors that are specific to the developer and project itself.

The more battle-tested dev who can crank out high-powered production APIs super quickly, will have higher rate then someone new to framework. Of course, location is a big factor too with developers hailing from more expensive areas carrying the bigger rate. Finally, the complexity of your project (especially when you work with integrating other systems or have big load) also can affect the final price.

What does the Lemonio vetting process for FastAPI developers look like?

1. We review all applications, with a focus on FastAPI experience and Python knowledge, as well as API & Web app building expertise. Additionally, we factor in their English language skills and location.
2. Our recruiters go through each resume to match experiences with user profiles, such as LinkedIn, to confirm accuracy and update data.
3. Screening call with a mix of tech-based queries and coding challenges that assess and test their knowledge of real FastAPI solutions.
4. A thorough technical interview where we evaluate the communication, coding style and do live coding tasks to check developers skills in practical FastAPI.

This intensive approach acts as a filter to ensure that only the highest quality FastAPI developers join our network.

FastAPI’s emphasis on type hinting, automatic API documentation generation and asynchronous development are nothing short of a developer’s dream: they lead to faster development cycles while creating cleaner more maintainable code base.

Which means getting your APIs to market faster, with less bugs and more reliability. From building microservices to integrating applications and exposing public APIs: a FastAPI developer can make the most out of this mighty framework helping you build a more agile, responsive, and scalable system.

You need the best developers who can create high performance web applications & APIs. Lemon.io gives you access to such a network of talented developers with expertise in FastAPI, which means far less time vetting candidates.

Opting for Lemon.io when hiring FastAPI makes life easier by taking away the stress and time involved in sourcing, screening and negotiations. Take a developer for a test-drive with our risk-free trial period and have peace of mind that you will never find yourself stranded without the perfect talent.

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