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!

22,142レビューから、クライアントは FastAPI Developers 4.9/5個の星で評価します。
FastAPI Developers を採用する

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!

22,142レビューから、クライアントは FastAPI Developers 4.9/5個の星で評価します。
FastAPI Developers を採用する

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    17 見つかった仕事

    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, ...

    $114 Average bid
    $114 平均入札額
    3 入札

    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...

    $17 / hr Average bid
    $17 / hr 平均入札額
    31 入札

    AI-Powered Vehicle Certification and Automotive Service Bidding Platform Senior Full Stack Developer Hiring Backend, AI Microservices and Payment Systems IMPORTANT — PROJECT CONTEXT This project is not starting from scratch. The platform already has an existing codebase, initial architecture, and a partially developed user interface. The current hiring process is taking place due to the replacement of the previously responsible developer, and therefore requires a technical transition, audit of the current system stage, and continuation of development. The new developer will be responsible for: • reviewing the existing codebase • auditing the current development stage • identifying technical gaps and inconsistencies • fixing existing problems • continui...

    $1159 Average bid
    NDA
    $1159 平均入札額
    35 入札

    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...

    $21 Average bid
    $21 平均入札額
    42 入札

    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 ...

    $178 Average bid
    $178 平均入札額
    87 入札

    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-...

    $15535 Average bid
    $15535 平均入札額
    33 入札

    **Project Title** Build SaaS dashboard for legal-tech platform (Python FastAPI + React) **Project Overview** I am building a legal-tech platform called **Virtual Clerk** that automatically tracks court cases and alerts lawyers when hearing dates change. The backend scraping engine already exists. It uses: * Python * BeautifulSoup / Requests * Background workers * Modular court scrapers The system currently scrapes multiple courts and generates alerts and daily digests. What I need now is to turn this into a **usable web SaaS product for lawyers**. --- **Tech Stack** Backend: * Python * FastAPI Database: * PostgreSQL Workers / Queue: * Redis / Celery (or similar) Frontend: * React or Deployment: * Docker * VPS (DigitalOcean / AWS) --- **Required Features** 1. **User Aut...

    $1302 Average bid
    $1302 平均入札額
    102 入札

    I’m building a small web-based tool, code-named “Socmed Evakuator”, that zeroes in on Twitter data and shows how an account’s follower count changes day by day. The goal is clear: connect to the Twitter API, collect the right numbers automatically, and present them in an easy-to-read dashboard so I can spot trends without digging through spreadsheets. Here’s how I picture the workflow: after authenticating through Twitter’s latest OAuth flow, the app should fetch follower totals on a schedule I can tweak (hourly, daily, etc.), store each snapshot in a lightweight database, then visualise the growth curve with a clean chart. I’m flexible on the stack—Python with FastAPI, Node.js with Express, or another modern framework is fine as long as the...

    $35 / hr Average bid
    $35 / hr 平均入札額
    56 入札

    I’m building a small web-based tool, code-named “Socmed Evakuator”, that zeroes in on Twitter data and shows how an account’s follower count changes day by day. The goal is clear: connect to the Twitter API, collect the right numbers automatically, and present them in an easy-to-read dashboard so I can spot trends without digging through spreadsheets. Here’s how I picture the workflow: after authenticating through Twitter’s latest OAuth flow, the app should fetch follower totals on a schedule I can tweak (hourly, daily, etc.), store each snapshot in a lightweight database, then visualise the growth curve with a clean chart. I’m flexible on the stack—Python with FastAPI, Node.js with Express, or another modern framework is fine as long as the...

    $22 / hr Average bid
    $22 / hr 平均入札額
    48 入札

    Project Title: AI-Powered Lead Matching System (RAG + OpenAI + Fullstack) Project Description: I am looking for an experienced Fullstack + AI Engineer to build a production-ready AI-powered lead matching system. Project Overview: The system should intelligently match business leads using semantic search and LLM-based reasoning instead of traditional keyword matching. Core Requirements: Build a RAG (Retrieval-Augmented Generation) pipeline Generate embeddings using OpenAI API Store vectors using pgvector or Pinecone Implement semantic similarity search Develop REST APIs using FastAPI or Node.js Create a modern frontend dashboard (React / ) Deploy on AWS (ECS, Lambda, or EC2) Features: Business profile ingestion Data embedding pipeline Vector search functionality AI-generate...

    $2193 Average bid
    $2193 平均入札額
    179 入札
    LEAD SOFTWARE DEVELOPER - FinTech
    2 日 left
    認証済み

    LEAD SOFTWARE DEVELOPER — FinTech Remote | Long-Term, Full-Time | Start Immediately --- ABOUT US We are a Boston-based fintech company building mobile money infrastructure for underserved markets. Our flagship product digitizes a traditional practice used by an estimated 1 billion people globally — and delivers it via iOS and Android apps, with USSD support for feature phones on 2G networks. We are in active commercial partnership with a large mobile carrier in Africa and we have a hard delivery milestone in May 2026. This is not a prototype. This is a live production build with a real enterprise partner. --- THE ROLE We are hiring a long-term, full-time Lead Software Developer to own our Phase 1 build from foundation to milestone delivery. This is a high-trust, high-ac...

    $13 / hr Average bid
    $13 / hr 平均入札額
    133 入札

    I already have a functioning Python script that calculates Basal Metabolic Rate and daily calorie needs using the standard Mifflin-St Jeor equations and the usual activity multipliers. Now I want that logic wrapped in a clean, responsive web interface. The interface must be web-based, not command-line. A simple page with form fields (age, weight, height, gender and, if you prefer, an activity-level dropdown) is all I need for this first version. When the user hits Submit, the page should display: • their BMR in kcal/day • calorie targets for each activity level (sedentary, lightly active, moderately active, very active, extra active) Feel free to use Flask, Django or FastAPI for the backend; plain HTML/CSS or a lightweight framework like Bootstrap will work for the front end...

    $224 Average bid
    $224 平均入札額
    63 入札

    Project Overview I am building a B2B AI automation platform for small and medium businesses. The platform monitors email and calendar, surfaces intelligent summaries and recommended actions, automates repetitive GUI workflows across web applications, and gives teams an AI assistant accessible via a Chrome extension sidebar. This is a production build — not a prototype. The platform needs to be ready for real paying customers at the end of the engagement. What You Will Build The full product, end to end. This includes: • A Python backend API deployed on a cloud platform, handling authentication, AI routing, cost management, and all business logic • A Chrome Manifest V3 browser extension with a sidebar interface — the primary user surface • Continuous ...

    $2157 Average bid
    $2157 平均入札額
    51 入札

    Title: AI-Powered Document Intelligence Demo – 7-Day Delivery Budget: ₹10k Timeline: 10 Days Location: Remote ⸻ Project Overview We are building a proof-of-concept Doc Intelligence demo for medical perfusion sheets. The goal is to extract structured vitals from uploaded images/PDFs and display them in a simple real-time dashboard with alerts. This is a demo only, not a full MVP — the focus is on speed, accuracy, and visual clarity. ⸻ Key Deliverables 1. OCR / Text Extraction. • Input: scanned perfusion sheet (PNG/JPG) or PDF. Have handwritten • Output: structured JSON (BP, ACT, Flow, Temp, Time). • Include basic validation (range checks, missing values). 2. Backend API • Python + FastAPI (or equivalent). • Receives uploaded file → r...

    $98 Average bid
    $98 平均入札額
    21 入札

    **Python Intraday Options System Development (NIFTY / SENSEX)** I’m starting a fresh build of a **modular intraday options trading system** for Indian indices (**NIFTY / SENSEX**) and I’m looking for a **Python engineer** who can take this from zero to a **stable Phase 1 MVP**. ### Phase 1 scope This is a green-field build. The initial milestone should cover: * Robust market-data and option-chain ingestion via the **Upstox API** * A **rule-based signal engine** that can be extended later for **AI-assisted analytics modules** * **Dynamic stop-loss / take-profit logic** that adapts to live market conditions * **Paper-trading execution** with position tracking (**no live orders in Phase 1**) * Structured logging for post-trade analysis, debugging, and future extensions ### Te...

    $1101 Average bid
    $1101 平均入札額
    43 入札

    Chrome Extension to auto-fill the official government visa website Pull data from our portal a Populate fields only (no auto submission) Requirements: Experience with Python (Django / FastAPI preferred) Strong JavaScript skills Experience building Chrome Extensions (Manifest V3) Experience with OCR / document processing / AI validation Ability to handle complex conditional forms Secure data handling Deliverables: Fully functional portal + admin panel + AI validation/compliance + Chrome Extension.

    $99 Average bid
    $99 平均入札額
    18 入札

    Infinity is the name I have reserved for an AI-driven web platform that functions first and foremost as an educational resource. I want a clean, scalable solution that lets anyone—from K-12 pupils to college, postgraduate or lifelong learners—store, organise, and retrieve knowledge in any field with the help of machine-learning features. Here is the vision in plain terms. Users create an account, upload or link their study material (PDFs, videos, lecture notes, articles or datasets), and the system instantly classifies, tags and indexes that content. A conversational AI layer (think ChatGPT-style) then allows them to ask questions, generate quick summaries, build flashcards, or create personalised study paths from their own resources plus open-access reference material pulled ...

    $17 / hr Average bid
    $17 / hr 平均入札額
    109 入札

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