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!

Daripada 24,070 ulasan, klien menilai FastAPI Developers 4.9 daripada 5 bintang.
Upah 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!

Daripada 24,070 ulasan, klien menilai FastAPI Developers 4.9 daripada 5 bintang.
Upah FastAPI Developers

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    Status Pekerjaan
    23 pekerjaan dijumpai

    Proyecto: API / Sistema de búsqueda de productos en múltiples tiendas (Texto + Foto tipo Lens) Estoy buscando un desarrollador freelance con experiencia en web scraping, desarrollo de APIs y reconocimiento de productos por imagen, para crear un sistema que permita buscar un producto en múltiples tiendas online al mismo tiempo. Objetivo Desarrollar una API (o sistema backend) donde yo pueda buscar productos de dos maneras: 1) Búsqueda por texto Ej: “iPhone 15 Pro 256GB” / “Zapatillas Nike Air Force blancas” 2) Búsqueda por imagen (tipo Google Lens) Subir una foto del producto y que el sistema intente identificarlo (marca/modelo) y luego busque coincidencias en las tiendas. El sistema debe consultar automáticamente una lista...

    $16 Average bid
    $16 Avg Bida
    8 bida

    My SaaS platform is live on FastAPI (Python) and , with OpenAI API powering several features. Everything works except the most important part: users cannot log in consistently. I’ve traced the problem to the hand-off between frontend and backend—tokens leave the browser but something breaks before FastAPI accepts them. We use JWT for all auth flows, so I need someone who knows that pattern inside out and can spot subtle communication glitches fast. Your job is to dive into the codebase, reproduce the failure, isolate the root cause, and ship a clean, secure fix. Success means a new user can sign up, receive their JWT, refresh it on schedule, and hit protected endpoints without a single 401. Deliverables • Detailed diagnosis of the communication fault between and FastAPI...

    $18 Average bid
    $18 Avg Bida
    28 bida

    ImmigrateSmart is an existing immigration-tech platform designed to deliver structured, attorney-built immigration tools and workflows. This engagement is not a greenfield build and not a long-term role. You will be responsible for implementing clearly defined modules within an existing architecture, delivering working code, documentation, and handoff—then exiting cleanly. Scope of Work (What you WILL do) You will implement specific, pre-defined components, which may include some or all of the following (exact tasks will be milestone-scoped before start): Backend (FastAPI / Python) Build or extend API endpoints Implement request/response schemas (Pydantic) Integrate with third-party services (e.g. Stripe, email, calendar, webhooks) Ensure modular, clean, readable archite...

    $448 Average bid
    $448 Avg Bida
    38 bida

    Build Full Stack API with FastAPI, PostgreSQL & Streamlit UI You said: Uploaded image Give me matter for this ChatGPT said: Good. This is important. If you write a weak description, you’ll attract low-quality freelancers. If you write clearly, you get serious professionals. I’ll give you a strong, clear project description you can directly paste. Option 1: FastAPI + PostgreSQL + Streamlit Project Project Title Idea: Build Full Stack API with FastAPI, PostgreSQL & Streamlit UI I need a developer to build a full-stack application using FastAPI, PostgreSQL, and Streamlit. Project Requirements: • Build REST APIs using FastAPI • Connect to PostgreSQL database • Implement full CRUD operations (Create, Read, Update, Delete) • Database table fi...

    $11 / hr Average bid
    $11 / hr Avg Bida
    12 bida

    Hello, I am building a small data collection tool for a medical AI research project. The goal is to collect doctor-patient role-play audio data and prepare it for AI training. I need a simple system with the following features: 1) Web-based interface (works on mobile and desktop) 2) Upload audio files (WAV/MP3) 3) Automatic speech-to-text using Whisper 4) Editable transcript (dialect correction) 5) Field for medical Arabic normalization 6) Term notes input 7) Automatic folder/package generation per session 8) Cloud storage (Google Drive / S3 or similar) This is Phase 1: Data collection only (no diagnosis, no reports). Tech preference: - Frontend: Web (React or simple HTML) - Backend: Python (Flask/FastAPI) - ASR: Whisper - Storage: Cloud + Local Deliverable: A working MVP that allow...

    $476 Average bid
    $476 Avg Bida
    97 bida

    You are a senior cybersecurity + machine learning engineer. Build a practical, runnable, end-to-end Transformer-based Web Application Firewall (AI-WAF) prototype suitable for Smart India Hackathon / ISRO SIH demonstration. The system must implement the full pipeline: Log Ingestion → Parsing → Normalization → Tokenization → Transformer Training → Multi-Class Attack Classification → Anomaly Scoring → Real-Time Non-Blocking Inference → Alerting & Logging → Incremental Fine-Tuning ======================================== 1. CORE FUNCTIONAL REQUIREMENTS ======================================== A. Multi-Class Attack Detection The Transformer model must classify HTTP requests into: - BENIGN - SQL_INJECTION - XSS - COMMAND_INJECTION - PATH_TR...

    $57 Average bid
    $57 Avg Bida
    7 bida

    I need a web-based face recognition system that records employee attendance the moment someone shows up, without any manual check-in. Accuracy and speed are more important to me than flashy UI, but the interface must still be clear enough for HR staff to view logs and pull reports with zero training. Core functionality I expect: • Real-time attendance logging as soon as a face is detected • Instant notification alerts (e-mail, push, or SMS—whatever integrates cleanly) when someone signs in, signs out, or when an unknown face appears • Report generation that can be filtered by date range, department, or individual employee, exportable to CSV and PDF • A webhook endpoint so our internal systems can consume every check-in or alert programmatically Feel free...

    $120 Average bid
    $120 Avg Bida
    19 bida

    I need a lightweight, AI-flavoured MVP that lets volunteers log and track the hours they devote to our projects, all from a single web dashboard. The build should feel modern and “smart” in its UX—think quick, predictive form fills and clean analytics rather than heavy-handed machine-learning features. Core scope • Hours-tracking module: volunteers enter time, edit past entries, and view personal and aggregate stats. • Instagram tie-in: pulling our hashtagged posts into a simple feed on the dashboard and giving admins one-click sharing of top volunteer highlights back to Instagram. OAuth-based sign-in is fine; no need for Facebook or Twitter right now. • Admin view: exportable CSV of logged hours plus a concise summary panel showing totals by volunte...

    $284 Average bid
    $284 Avg Bida
    19 bida

    SCOPE AND ARCHITECTURE ADHERENCE The published technical requirements and stack (Python, PostgreSQL as source of truth, Redis for locking, Binance integration, Docker deployment) are the priority baseline for this project. If you propose architectural changes (e.g., different database, alternative execution model, third-party services, or different infrastructure), you must provide clear technical justification explaining: • Why the change improves robustness or reliability • How it preserves deterministic state and idempotency • What trade-offs are introduced • Why it is superior to the baseline stack "Unjustified stack substitutions or generic alternatives will not be considered" OPTION A – Hybrid (Binance + 3Commas) Senior Python Engineer &ndas...

    $2146 Average bid
    $2146 Avg Bida
    82 bida

    A responsive frontend web application built for a photography business to showcase services, portfolios, and client information. The platform focuses on clean UI design, smooth navigation, and optimized performance. It is deployed on cloud infrastructure and structured for scalability and future backend integration. Link:

    $57 Average bid
    $57 Avg Bida
    9 bida

    Hiring Senior Software Engineer / AI Engineer (Remote – India Preferred | US Time Zone) About the Role We are looking for an experienced Senior Software Engineer / AI Engineer who can participate in technical interviews and work on modern software and AI-based projects with international clients. This role is suitable for someone who is confident in real development work, understands system design, and can communicate clearly during technical discussions. You will work remotely with global teams and contribute to scalable applications and AI solutions. Location Remote work India-based candidates preferred Working Hours Availability required during US time zone hours Responsibilities Participate in technical interviews and technical discussions Build and maintain web applic...

    $1191 Average bid
    $1191 Avg Bida
    54 bida

    The developer should build a cross-platform AI-powered IT Help Desk agent and management system that supports Windows, Linux, and macOS. The system must include a backend API (preferably in Python FastAPI or Node.js) to handle ticket management, device registration, and command distribution, along with a secure database (PostgreSQL) and an optional vector database for AI knowledge retrieval. The agent itself should be written in a compiled language like Go for cross-platform deployment, capable of registering devices, reporting system info and heartbeat, detecting missing patches, restarting services, and executing safe commands remotely. The AI component should analyze incoming IT tickets, automatically suggest fixes, and optionally execute auto-remediation commands when safe. All communi...

    $604 Average bid
    $604 Avg Bida
    139 bida

    Project Overview We are looking for a developer to build and integrate a professional AI chatbot for our platform, Proxima Study. The goal is to allow students to ask questions on the front-end and receive answers generated by leading AI models (ChatGPT and Gemini) through a secure back-end bridge. Scope of Work Chat Interface (Front-end): A clean, user-friendly chat bubble/window on our website where students can type questions. It must support "streaming" (where text appears word-by-word) so users aren't waiting on a loading screen. The Bridge (Back-end): Develop a secure middleman (API) that takes the student’s question, sends it to OpenAI or Google Gemini, and brings the answer back to the website. AI Logic: Set up the system so I can easily toggle which AI mode...

    $131 Average bid
    $131 Avg Bida
    163 bida

    Please read carefully before bidding. We are building a production-grade AI-powered building inspection report platform. 90% was built in base44 however, base44 cannot parse pdf"s larger than 10MB, so we have hit a roadblock and decided to take another route. This is NOT: *A WordPress job *A Shopify job *A bubble/no-code job *A “prompt engineering” job *A basic CRUD web app This is a serious backend architecture project involving: PDF parsing (11MB+ technical reports) AI defect extraction Structured data normalization Repair cost estimation logic Long-running job orchestration Background workers / queues Multi-user concurrency Production deployment architecture NOTE: Required Technical Stack (Non-Negotiable) You must have experience with: Node.js or Py...

    $2826 Average bid
    $2826 Avg Bida
    234 bida

    I need a professional market intelligence tool for MercadoLibre Venezuela (MLV). The goal is to track competitor sales by monitoring inventory changes (Inventory Differential Tracking). Key Features: Discovery Crawler: Identify Item IDs in specific categories. Inventory Tracking: Check stock every 12 hours. Calculate sales: Sales = Stock_{Yesterday} - Stock_{Today} Restock Logic: Handle stock increases without counting them as sales. Anti-Bot: Use rotating proxies to avoid IP bans. Output: Data synced to a Google Sheet.

    $158 Average bid
    $158 Avg Bida
    146 bida

    I’m ready to move beyond notebooks and actually ship models, but I’d like to do it the right way, step by step, with an expert by my side. My stack of choice is Python, and we’ll be working on Google Cloud. The part I’m most eager to master is model serving and building production-grade APIs, though I still want you to frame everything in an end-to-end workflow so the pieces fit together. Here’s how I picture our work together: • Pair-programming sessions where we containerise a trained model, push it to Google Cloud (e.g., Cloud Run or Vertex AI), and expose it through a REST or gRPC endpoint. • Walk-through of best practices for versioning, environment management, and automated CI/CD so each new model can be rolled out with minimal friction. ...

    $21 / hr Average bid
    $21 / hr Avg Bida
    103 bida
    Python Developer
    2 hari left
    Disahkan

    I’m building and maintaining a series of backend services and I need an experienced Python developer who feels at home in FastAPI. The day-to-day work centres on designing clean, scalable REST endpoints, wiring them to a PostgreSQL database, and keeping the Dockerised environment tidy for smooth deployments. Most of the upcoming tasks involve integrating external providers: think payment gateways for transaction flow and AI/ML services that power in-app intelligence. Beyond those, you’ll help craft automation scripts, refine existing business logic, and keep an eye on performance as traffic grows. Here is what a typical assignment looks like: • create or extend a FastAPI micro-service • expose secure endpoints, including user auth where required • conne...

    $2175 Average bid
    $2175 Avg Bida
    114 bida

    I need a seasoned backend developer to design and implement a secure REST API that lets my users check award-seat availability (Avios) directly from Iberia.com. The core of the job is to automate the full search flow — login, query, filter, and return the results — while keeping the service fast and reliable. Authentication & security The service must issue and validate JWT tokens for every request beyond the public health-check route. Token refresh, revocation, and a simple role model (“user” vs. “admin”) should be built in from the start. Flight data extraction I do not have official Iberia developer access, so we will need to pull the data ourselves. I’m open to whichever tooling you are most comfortable with — BeautifulSoup, Sel...

    $145 Average bid
    $145 Avg Bida
    53 bida

    I need a seasoned backend developer to design and implement a secure REST API that lets my users check award-seat availability (Avios) directly from Iberia.com. The core of the job is to automate the full search flow — login, query, filter, and return the results — while keeping the service fast and reliable. Authentication & security The service must issue and validate JWT tokens for every request beyond the public health-check route. Token refresh, revocation, and a simple role model (“user” vs. “admin”) should be built in from the start. Flight data extraction I do not have official Iberia developer access, so we will need to pull the data ourselves. I’m open to whichever tooling you are most comfortable with — BeautifulSoup, Sel...

    $144 Average bid
    $144 Avg Bida
    74 bida

    Seeking an experienced full-stack/ML developer to build a secure, cloud-based web platform for analyzing anonymized dental X-rays. The tool enables upload of DICOM files, automatic anonymization (strip all metadata/identifiers), AI-driven detection & annotation of pathologies (caries, periodontal disease, bone loss, cysts, etc.), visual overlays, confidence scores, and report generation—all with strict patient privacy, no storage of originals, and human oversight required. Key Requirements: • Clean React/ frontend with drag-and-drop upload, DICOM viewer (e.g., ), annotation overlays & heatmaps. • Python backend (FastAPI preferred) + secure auth, encrypted file handling, and cloud storage (AWS S3/GCP). • PyTorch/TensorFlow ML models (fine-tune YOLO/U-Net/M...

    $405 Average bid
    $405 Avg Bida
    208 bida

    Project Overview Demo of project we would like to use as example provided below. We are seeking an experienced developer to build a low-latency, real-time stock screener using the QuoteMedia API. The screener will monitor all actively traded U.S. stocks and display key metrics with updates occurring every second. The ideal candidate should have prior experience building financial data tools, stock scanners, or trading platforms and be comfortable working with high-frequency data updates. Core Requirements Data Source QuoteMedia API will be used as the primary data provider. The system must pull and maintain a live list of all U.S. equities. Required Metrics For each stock, the screener must calculate and display: Current price Volume Relative volume (daily) Relative volume (5-m...

    $527 Average bid
    $527 Avg Bida
    170 bida

    Your bid MUST include answers to the 5 questions at the bottom of this posting or it will be immediately rejected. We're a UK-based eSIM and mobile network company launching a branded international calling service. We need an experienced developer to fork, rebrand, and customise the WebTrit Phone open-source softphone app and get it published to both app stores. IMPORTANT: Read this entire posting carefully. There are specific questions at the bottom you MUST answer. Generic proposals will be rejected immediately. What is WebTrit? WebTrit Phone is a Flutter/Dart softphone app that uses WebRTC for voice and video calling. It connects to SIP-based VoIP systems via a REST API. The full source code is available on GitHub. What We Need Done Phase 1 — Fork & Rebrand Fork the Web...

    $479 Average bid
    $479 Avg Bida
    92 bida

    Looking for DevOps Engineer to Set Up Production Environment for SaaS Application Note: I prefer someone who speaks Arabic for easier communication. Description: I have a working SaaS application built with: • Backend: FastAPI • Frontend: (React) • Database: (PostgreSQL ) The application is already functional, and I have real clients. Now I need an experienced DevOps engineer to prepare a proper production-ready infrastructure. Scope of Work: I need help with: 1. Setting up Production Environment (secure & scalable) 2. Creating Staging / Testing environment 3. Implementing CI/CD pipeline 4. Server deployment (Docker preferred) 5. Security best practices (SSL, firewall, access control, secrets management) 6. Logging & Monitoring setup (error tracking, ser...

    $195 Average bid
    $195 Avg Bida
    64 bida

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