FastAPI is a modern, open-source, high-performance web framework used to develop a range of different API applications. Developed with a combination of Python and Starlette, the framework is designed to help developers easily create and maintain powerful applications using the latest technologies. With FastAPI, developers can quickly build production-ready APIs that can handle response times as low as a few milliseconds or less. Moreover, FastAPI is especially useful for creating solutions that require complex data processing and includes features such as interactive documentation with fast response time, asynchronous request data validation and easy integration with databases.

A FastAPI Developer is therefore an expert in creating powerful, robust APIs that are capable of meeting the requirements of even the most demanding solutions. With the help of a FastAPI Developer, clients can create fast, reliable applications quickly and easily. The developer makes sure that all aspects related to data processing and validation are taken care of and enables applications to utilize the latest technologies.

Here's some projects that our expert FastAPI Developer made real:

  • Our developer helped clients create secure login systems through Google Authentication
  • We created databases for complex data processing solutions
  • Another client enhanced their existing systems with APIs for mobile apps
  • We changed how customers interacted with websites and digital services through fast response times
  • We helped businesses integrate digital products with custom made APIs using MongoDB and NextJS

Whether you're an individual looking for a personal project or a small team looking for an experienced FastAPI Developer to work on a larger project, Freelancer.com has you covered. With experienced developers from all over the world, you can easily find the perfect match for your project needs. So why wait? Post your project on Freelancer.com today and get one step closer to finding the perfect developer to make your vision come true!

Asiakkaamme antoivat 20,575 arvostelussa keskimääräisen arvosanan FastAPI Developers 4.9 / 5 tähteä.
Palkkaa FastAPI Developers

FastAPI is a modern, open-source, high-performance web framework used to develop a range of different API applications. Developed with a combination of Python and Starlette, the framework is designed to help developers easily create and maintain powerful applications using the latest technologies. With FastAPI, developers can quickly build production-ready APIs that can handle response times as low as a few milliseconds or less. Moreover, FastAPI is especially useful for creating solutions that require complex data processing and includes features such as interactive documentation with fast response time, asynchronous request data validation and easy integration with databases.

A FastAPI Developer is therefore an expert in creating powerful, robust APIs that are capable of meeting the requirements of even the most demanding solutions. With the help of a FastAPI Developer, clients can create fast, reliable applications quickly and easily. The developer makes sure that all aspects related to data processing and validation are taken care of and enables applications to utilize the latest technologies.

Here's some projects that our expert FastAPI Developer made real:

  • Our developer helped clients create secure login systems through Google Authentication
  • We created databases for complex data processing solutions
  • Another client enhanced their existing systems with APIs for mobile apps
  • We changed how customers interacted with websites and digital services through fast response times
  • We helped businesses integrate digital products with custom made APIs using MongoDB and NextJS

Whether you're an individual looking for a personal project or a small team looking for an experienced FastAPI Developer to work on a larger project, Freelancer.com has you covered. With experienced developers from all over the world, you can easily find the perfect match for your project needs. So why wait? Post your project on Freelancer.com today and get one step closer to finding the perfect developer to make your vision come true!

Asiakkaamme antoivat 20,575 arvostelussa keskimääräisen arvosanan FastAPI Developers 4.9 / 5 tähteä.
Palkkaa FastAPI Developers

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    19 löydetyt työt

    I want a small, tidy web application that lets me whip up persuasive sales pages in minutes. My focus is on conversion-driven copy, so your focus will be pure programming: clean code, smooth UX, and a flexible template system I can expand later. Core idea The tool should take my copy blocks—headline, sub-headline, body, testimonials, guarantees, call-to-action—and render a responsive HTML/CSS page ready to publish. A simple front-end form or drag-and-drop interface is fine as long as it is intuitive. I am comfortable editing text, not code, so please keep any configuration options straightforward. Preferred stack JavaScript or Python are both acceptable; lightweight frameworks such as React with Node, or Flask/FastAPI on the back end, will work. Feel free to propose an al...

    €192 Average bid
    €192 Keskimäär. tarjous
    34 tarjoukset

    I need an experienced tester to run a full usability pass on my browser-based application. The stack is Node.js on the front end with a FastAPI back end, and I want to be certain that every user-facing flow feels smooth and error-free before launch. Scope of the test • Focus areas: user login and authentication, data retrieval and display, and all form submissions. • Primary goal: uncover anything that breaks the user’s flow or feels confusing, slow, or inconsistent. • Testing approach: a balanced mix of exploratory manual sessions and automated regression checks. You are free to select your preferred toolset—Selenium, Cypress, Playwright, or similar—so long as I can run the scripts locally and review the reports. Deliverables 1. A concise test pl...

    €15 / hr Average bid
    €15 / hr Keskimäär. tarjous
    14 tarjoukset
    AI Marketing Lead Qualifier
    6 päivää left
    Varmennettu

    I’m building a real-time, AI-driven dashboard that will automatically score and segment B2C leads for marketing campaigns. The core objective is to surface the highest-value prospects by analysing three metrics side by side—lead source, conversion rate and customer lifetime value—then presenting clear, actionable insights in an interactive interface. Here’s how I picture the flow. Raw data will stream in from typical marketing touchpoints (landing pages, paid ads, email, social, CRM exports). A lightweight ETL layer will clean and unify these feeds, feed them into a predictive model that ranks each incoming lead, and push the processed results to a front-end dashboard. I’m open to frameworks like Python + FastAPI for the back end and React, Vue or similar for...

    €468 Average bid
    €468 Keskimäär. tarjous
    32 tarjoukset
    Onsite Python AI/ML Developer Needed
    6 päivää left
    Varmennettu

    I’m expanding our LLM-focused R&D pod in Noida and need a hands-on Python engineer who can start contributing on day one. You must be comfortable building asynchronous back-ends in FastAPI, have real production experience creating LangChain chains and agents, and be equally at ease working with both OpenAI and Hugging Face models. Day-to-day you’ll design and optimise micro-services that call LLMs, manage embeddings in Pinecone or FAISS, and orchestrate data flows through PostgreSQL, MongoDB and Redis—everything neatly containerised in Docker for local and cloud runs. Expect plenty of room to prototype new AI features, run quick experiments, and then harden the successful ones for scale. The role is 100 % onsite in our Sector-62 Noida office; close collaboration wit...

    €660 Average bid
    €660 Keskimäär. tarjous
    27 tarjoukset

    I want a small, tidy web application that lets me whip up persuasive sales pages in minutes. My focus is on conversion-driven copy, so your focus will be pure programming: clean code, smooth UX, and a flexible template system I can expand later. Core idea The tool should take my copy blocks—headline, sub-headline, body, testimonials, guarantees, call-to-action—and render a responsive HTML/CSS page ready to publish. A simple front-end form or drag-and-drop interface is fine as long as it is intuitive. I am comfortable editing text, not code, so please keep any configuration options straightforward. Preferred stack JavaScript or Python are both acceptable; lightweight frameworks such as React with Node, or Flask/FastAPI on the back end, will work. Feel free to propose an al...

    €10 / hr Average bid
    €10 / hr Keskimäär. tarjous
    25 tarjoukset

    I need a single AI-driven system that can log in to Flipkart, Amazon, Myntra, Meesho and Ajio, then handle day-to-day store tasks without my constant oversight. Here’s what matters most to me: • Price tracking – The bot should watch my competitors and my own listings, capture price changes in real time and flag opportunities to raise or lower prices automatically or after human approval. • Order management – As soon as an order appears, I want labels downloaded, shipping updates pushed, cancellations handled and tracking numbers synced back to every marketplace. • Product listing – Bulk upload new SKUs or edit existing ones from one master catalogue, including images, descriptions and compliance attributes each site requires. • Return...

    €247 Average bid
    €247 Keskimäär. tarjous
    44 tarjoukset

    We are building an AI-powered procurement intelligence platform with Telegram Bot delivery. What you will build: - Automated web scraper (Scrapy + Playwright) collecting from 8+ websites daily - Telegram Bot for subscriber management and alert delivery (python-telegram-bot) - FastAPI backend with PostgreSQL database - Claude AI API integration for document analysis and matching - Simple internal admin panel (FastAPI + HTML) - Scheduled jobs running nightly (APScheduler) - Deployed on Hetzner Linux VPS Timeline: 6 weeks, fixed price, milestone-based payments Requirements: - Python — production level - Scrapy + Playwright — real production scraper experience required - FastAPI + PostgreSQL + SQLAlchemy - python-telegram-bot - Clean code and documentation Knowledge Transfer t...

    €1033 Average bid
    €1033 Keskimäär. tarjous
    128 tarjoukset

    We are building an AI-powered procurement intelligence platform with Telegram Bot delivery. What you will build: - Automated web scraper (Scrapy + Playwright) collecting from 8+ websites daily - Telegram Bot for subscriber management and alert delivery (python-telegram-bot) - FastAPI backend with PostgreSQL database - Claude AI API integration for document analysis and matching - Simple internal admin panel (FastAPI + HTML) - Scheduled jobs running nightly (APScheduler) - Deployed on Hetzner Linux VPS Timeline: 6 weeks, fixed price, milestone-based payments Requirements: - Python — production level - Scrapy + Playwright — real production scraper experience required - FastAPI + PostgreSQL + SQLAlchemy - python-telegram-bot - Linux VPS deployment - Clean code and documentatio...

    €997 Average bid
    €997 Keskimäär. tarjous
    145 tarjoukset
    Web-Based AI Medical Scribe
    4 päivää left
    Varmennettu

    I need a secure, browser-accessible AI medical scribe that can 1) turn live clinician speech into text, 2) recognise medical terminology with clinical-grade precision, and 3) push structured data straight into an EHR through FHIR or HL7. Transcription accuracy must sit in the 95–100 % range, so please be comfortable fine-tuning models, adding language-specific dictionaries, and building post-correction logic. The system must be entirely web-based, deployable to my cloud account, and compliant with HIPAA best practices. Python, FastAPI, React, WebRTC, or comparable stacks are all acceptable as long as latency stays low and security stays tight. Start your message with the name of the similar project you have already delivered and, if possible, a demo link or client reference—t...

    €438 Average bid
    €438 Keskimäär. tarjous
    217 tarjoukset

    I have a Windows Excel workbook (VBA) that calls a Python FastAPI server (business logic is server-side). The current version works, but I need it converted into a paid, production-grade software with maximum possible security on the client side to prevent unauthorized usage and bypassing. I’m a developer but not a cybersecurity expert. I want you to design and implement a strong licensing + anti-tamper system. Current setup Write "read" in your first line of your proposal. Excel (VBA) client on Windows FastAPI server (Python) VBA currently calls server directly What I need (must-have) Paid licensing enforcement Users must be licensed/paid before usage is allowed Support: active / expired / revoked / banned Maximum security client architecture I strongly prefer ...

    €148 Average bid
    €148 Keskimäär. tarjous
    62 tarjoukset

    I’m looking for a highly skilled full-stack developer / AI engineer to help build a professional enterprise SaaS platform called OpsAI. This is a serious, full-scale project designed to provide businesses with AI-powered operational insights — dashboards, KPIs, data analysis, AI-driven recommendations, and more. What we need: • Frontend: React/ (beautiful, intuitive dashboards, responsive design) • Backend: FastAPI / Node.js (data processing, CSV uploads, API integrations) • Database: MongoDB / PostgreSQL • AI Integration: Connect with Emergent AI / OpenAI for insights and analytics • Other: Authentication, billing/subscription flow, data persistence, secure multi-user architecture We’re looking for someone who can: •Build enterprise-...

    €11811 Average bid
    €11811 Keskimäär. tarjous
    107 tarjoukset
    Real Estate Model Formula Fix
    3 päivää left
    Varmennettu

    Fix & Improve Financial Modeling Accuracy for Real Estate Analysis Platform I have a real estate analysis app built with Python FastAPI. I need help checking and fixing a calculation issue in the backend. Some of the financial numbers are not coming out correctly, so I want someone to review the logic and fix the accuracy problem. This is a small task for now, not a full rebuild. You should be comfortable with: - Python - debugging calculation logic - financial formulas - Real estate experience is a plus. Please include your proposal your related experience regarding Real Estates Budget: $15-20 fixed Start your proposal with Financial Modeling Expert.

    €17 Average bid
    €17 Keskimäär. tarjous
    14 tarjoukset

    I’m building a new solution whose entire code-base is written in Python, and I’d like an experienced developer to help me take it from concept to a clean, working release. The exact feature set is still flexible, but it will draw on core areas of programming, database design, networking concepts and general system development, so a broad understanding of these disciplines will be valuable. Here’s what I need from you: • Translate the high-level requirements I provide into clear, efficient Python modules. • Advise on and implement an appropriate tech stack—whether that means a lightweight Flask or FastAPI service, a Django web app, a data-driven script, or something else that fits the goals best. • Design or refine database schemas and integrat...

    €17 / hr Average bid
    €17 / hr Keskimäär. tarjous
    131 tarjoukset

    BI Report Builder — React/FastAPI (Tableau-experienced only) We're building a visual, drag-and-drop report builder inside our enterprise HRMS SaaS — think simplified Tableau embedded in a web app. If you've only done basic dashboards, this isn't the role. What we're building: A canvas where users drag data entities (employees, invoices, timesheets, etc.), connect them visually, pick columns, configure chart types, and generate cross-entity reports — all in-browser without SQL knowledge. What's already done: Backend already supports multi-source SQL JOINs with full injection protection and tenant isolation 22 pre-aggregated data entities with 17 predefined valid join relationships Chart rendering components already built (bar, line, pie, area, ...

    €69 Average bid
    €69 Keskimäär. tarjous
    10 tarjoukset

    I’m ready to move my product idea from concept to a working backend and need an experienced Python developer to build a clean, well-documented RESTful API. The service will power a web and mobile interface, so stability, speed, and clear versioning matter. You’ll take charge of: • Designing the endpoint structure and data models • Implementing the API in Python (Flask, FastAPI or Django REST Framework—use the stack you’re fastest with) • Writing concise unit tests and inline docstrings • Adding basic authentication and error-handling middleware • Supplying a README with setup instructions and sample requests Must know MySQL Acceptance criteria: the project spins up locally in one command, all tests pass, and the sample calls retu...

    €15 / hr Average bid
    €15 / hr Keskimäär. tarjous
    79 tarjoukset
    Advanced Full Stack Developer Needed-
    2 päivää left
    Varmennettu

    Senior Full Stack Developer AI-Powered Automotive SaaS Platform Backend, AI Microservices and Payment Systems IMPORTANT — PROJECT CONTEXT This project is not starting from scratch. The platform already includes: • an existing codebase • an initial system architecture • validated UI/UX design assets • partially implemented frontend and backend components • development progress alrea The current hiring process takes place due to replacement, therefore the w • technical transition • audit of the curre • continuation and completion of development The selected developer will be respons • reviewing the existing codebase • auditing the current implementation stage • identifying technical gaps or inconsistencies • fixing ex...

    €939 Average bid
    Salassapitosopimus
    €939 Keskimäär. tarjous
    49 tarjoukset

    I’m looking to start a Python-based project purely for Personal use and I’m intentionally keeping the brief open so creative developers can pitch ideas that excite both of us. Whether it’s a handy automation script, a data-driven dashboard, a lightweight Flask or Django web app, a web-scraping utility, or even a small game, I’m happy to explore any direction—as long as it showcases clean, well-documented Python code. Because I do not have a strict deadline (No time limit), I prefer quality over speed. Take the time to think through the concept, architecture, and tech stack; then send me a Detailed project proposal that explains: • The core idea and its personal value • Key Python libraries or frameworks you plan to use (e.g., Pandas, Selenium, Fa...

    €22 Average bid
    €22 Keskimäär. tarjous
    46 tarjoukset

    I am building a web-based gambling bot and need the full solution coded in Python. The finished product has to support five separate game modes. Three of them are set in stone—Blackjack, Mines, and Towers—while the remaining two can be agreed on together once development starts so that the overall experience feels coherent. Core expectations • A clean Python code-base (FastAPI or Flask is fine) exposed through a REST or WebSocket API so the front-end can call every game action in real time. • Provably fair game logic for each mode, with seed reveal and verification endpoints. • Secure RNG and solid input validation to prevent exploits or edge-case crashes. • Lightweight web interface (React, Vue, or plain HTML/CSS/JS—whichever you are fastest ...

    €159 Average bid
    €159 Keskimäär. tarjous
    86 tarjoukset

    I have a working concept that turns a child's sketch into a colourful cartoon frame; now I need you to take those frames all the way to a polished 10-second (or longer) animated clip. The finished video must maintain a traditional cartoon aesthetic with smooth, fluid motion and temporal consistency throughout. Environment you will build: - ComfyUI as the workflow engine (Diffusers models where applicable) - SVD / AnimateDiff / CogVideoX for video generation and extension - ControlNet and LoRA to preserve line work while adding natural motion - Depth estimation feeding parallax/camera effects before final render - Containerised in Docker, exposed via FastAPI, queued with Redis, optimised for VRAM-efficient multi-GPU deployment Only open-source models with commercial-...

    €13717 Average bid
    €13717 Keskimäär. tarjous
    36 tarjoukset

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