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!

Müşterilerimiz, FastAPI Developers freelancerlarımızı 27,401 değerlendirme içinden 5 üzerinden 4.9 ile derecelendirdi.
FastAPI Developers İşe Alın

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!

Müşterilerimiz, FastAPI Developers freelancerlarımızı 27,401 değerlendirme içinden 5 üzerinden 4.9 ile derecelendirdi.
FastAPI Developers İşe Alın

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    I’m wrapping up development of Offro, a hyper-local deals and offers app built with Flutter, FastAPI, and MongoDB. Most core functions are live—OTP login, Google-Maps-based store discovery, reward wallets, QR redemption, merchant and admin panels, and Firebase push notifications—yet the Flutter layer still needs a final round of polish before we can push to production. Here is what I need from you: • Refine the user interface so screens feel consistent, modern, and visually crisp. • Restructure navigation where flows feel clunky, ensuring back-stack behaviour and deep links work flawlessly. • Hunt down and fix the load-time and responsiveness issues that are slowing the current build, especially on the store listing and deal-redemption screens. &bul...

    €8 / hr Average bid
    €8 / hr Ortalama Teklif
    41 teklifler

    I’m building a web-based AI scheduler that intelligently arranges meetings and tasks, learns from usage patterns, and presents optimal time slots through a clean browser interface. Your job is to design, train, and deploy the core scheduling engine, wire it to a modern web front-end, and make sure everything runs smoothly on common hosting platforms. What I expect: • A functional web application (front-end + back-end) that accepts natural-language or form-based requests and returns conflict-free schedules in real time. • An explainable AI component—whether rule-based optimisation, machine-learning, or a hybrid approach—that can be tuned or expanded later. • Clear documentation covering setup, model retraining, and API endpoints, plus a short hand-off c...

    €183 Average bid
    €183 Ortalama Teklif
    259 teklifler

    We are seeking a strong Full-Stack React Developer to help build and improve a cloud-based IoT / telematics platform involving connected devices, GPS/location data, mobile applications, dashboards, and real-time telemetry. This role will focus heavily on front-end development while also supporting API integration and backend-related development tasks. Responsibilities include: React / front-end development Dashboard and portal development API integration Data tables, filtering, and reporting tools Real-time telemetry visualization User authentication and permissions General full-stack development support Required Experience: React TypeScript REST APIs Full-stack web application development Strong UI/UX understanding for data-heavy applications Preferred Experience: IoT platforms T...

    €30 / hr Average bid
    €30 / hr Ortalama Teklif
    123 teklifler

    WE ARE BUILDING AN AUTONOMOUS AI FINTECH PLATFORM FOR DEBT MANAGEMENT. This is NOT a simple fintech app. This is NOT a basic AI wrapper. This is NOT a beginner project. We are building , an AI-native autonomous financial operating system designed to help people get out of debt with as little manual work as possible. The platform will use MULTIPLE AI AGENTS working together simultaneously like a real financial team operating on behalf of the user. The system will: • Aggregate loans, debt, invoices, creditors, and financial obligations • Connect with banking and financial systems • Use autonomous AI agents and advanced automations • Analyze financial risk continuously • Prioritize debts automatically • Create intelligent repayment strategies • Negotiate...

    €33402 Average bid
    €33402 Ortalama Teklif
    193 teklifler

    Hiring: Python Backend Engineer (Remote | Contract) We are looking for a skilled Python Backend Engineer to build and scale robust backend systems. The ideal candidate should have strong experience in API development, system design, and working with scalable, high-performance applications. --- Role Details - Role: Python Backend Engineer - Experience: 4–8 Years - Location: Remote - Engagement: Contract / Freelance - Compensation: ₹50,000 – ₹80,000/month (based on experience) - Note: This is a freelance role; PF benefits are not applicable --- Job Overview You will be responsible for developing backend services, APIs, and scalable systems that power web and data-driven applications. The role involves working closely with frontend, product, and DevOps teams to deliver high...

    €494 Average bid
    €494 Ortalama Teklif
    67 teklifler

    Title: Gen AI Expert Needed for Online Job Support (Weekdays – Remote) Description: We are looking for an experienced professional to provide online job support for a client working on Gen AI-related projects. Requirement Details: Remote online support 5 to 6 hours daily Weekdays only (Monday to Friday) Monthly payout: ₹50,000 Long-term opportunity for the right candidate Preferred Skills: Gen AI / AI application support Python & FastAPI REST APIs & Backend Development Cloud Platforms (GCP preferred) Docker / Kubernetes CI/CD pipelines SaaS & Microservices knowledge Candidate Profile: Looking for someone with strong backend and cloud experience who can assist in development, issue fixing, deployments, and technical guidance during client working hours. Important Te...

    €257 Average bid
    €257 Ortalama Teklif
    30 teklifler
    Full-Stack/LLM Development
    5 gün left
    Onaylı

    I’m replacing our summary-based workflow with a true Retrieval-Augmented Generation pipeline and need a collaborator who can own both the backend and the React front end. The core objective is accuracy: every PDF we receive from clients must be chunked, embedded, stored in Qdrant, and then retrieved at query time so the language model can cite exact passages, never a lossy summary. You’ll wire this flow together with Python services and Node/Fastify APIs, expose it to the UI in Typescript/React, and keep everything humming inside our OpenAI-powered evaluation layer. What I’ll lean on you for • Architecting and implementing the end-to-end RAG pipeline (chunking strategy, embedding jobs, vector-store schema, retrieval functions). • Building real-time docum...

    €15 / hr Average bid
    €15 / hr Ortalama Teklif
    276 teklifler

    Project: Algo Trading Platform Document Purpose: This file summarizes the current software features, the enhancements already added during recent development, missing capabilities, and recommended add-on improvements to complete the application into a more polished trading platform. 1. Current Core Features - Modular Python trading architecture with separate modules for broker integration, data fetching, backtesting, portfolio management, and strategy execution. - Dhan broker support via `src/broker/` and optional yfinance fallback in `src/data/`. - Multiple strategy implementations including moving average crossover, RSI, Bollinger Bands, and various option strategies. - Portfolio manager and risk manager modules for tracking positions and enforcing risk rules. - Backtesting engine i...

    €482 Average bid
    €482 Ortalama Teklif
    48 teklifler

    Title: Gen AI Expert Needed for Online Job Support (Weekdays – Remote) Description: We are looking for an experienced professional to provide online job support for a client working on Gen AI-related projects. Requirement Details: Remote online support 5 to 6 hours daily Weekdays only (Monday to Friday) Monthly payout: ₹50,000 Long-term opportunity for the right candidate Preferred Skills: Gen AI / AI application support Python & FastAPI REST APIs & Backend Development Cloud Platforms (GCP preferred) Docker / Kubernetes CI/CD pipelines SaaS & Microservices knowledge Candidate Profile: Looking for someone with strong backend and cloud experience who can assist in development, issue fixing, deployments, and technical guidance during client working hours. Important T...

    €471 Average bid
    €471 Ortalama Teklif
    32 teklifler

    Role Overview We are looking for an Agentic AI Developer whose primary responsibility is to build intelligent agents that can analyze KPI and raw data to generate insights, detect anomalies, and perform root cause analysis. Experience: 2–5 Years Location: Remote (India) Key Responsibilities • Design and develop intelligent agents that can analyze KPI data and raw datasets to generate actionable insights • Build agent workflows that: • Identify trends, patterns, and anomalies, provide root cause analysis for KPI changes • Develop query systems that allow users to: • Ask questions, Retrieve insights in natural language, Drill down into data • Implement RAG pipelines to: • Retrieve relevant data (KPI definitions, historical data, documents) • I...

    €504 Average bid
    €504 Ortalama Teklif
    82 teklifler

    We need an experienced AI agent engineer to build a focused MVP foundation for a production-oriented AI agent. The goal is not to build a full enterprise agent platform, but to create a clean working structure that can be extended safely in later phases. Exact Deliverables 1. Working AI agent API endpoint o Python backend, preferably FastAPI o API-first structure o Accepts user input and returns an LLM-generated response o Clear request/response format 2. Basic LLM orchestration o OpenAI, Anthropic, or similar LLM API integration o Configurable system prompt / instruction layer o Simple agent workflow logic o Basic tool/function structure if required 3. PostgreSQL logging o Store request, response, timestamp, status, and errors o Simple database schema o Setup or migration script included ...

    €52 / hr Average bid
    €52 / hr Ortalama Teklif
    164 teklifler

    Python Developer – Smart Home State Machine (FastAPI / asyncio) We are building CalmOS, a local-first smart home system on FastAPI (Python). We need a developer to implement the state machine — the brain that coordinates all subsystems simultaneously. CalmOS thinks in states, not devices. Each state defines what lighting, audio, climate, ventilation, socket...

    €23 / hr Average bid
    €23 / hr Ortalama Teklif
    182 teklifler

    Python Developer – Smart Home Security & Alarm Logic (FastAPI / asyncio) We are building CalmOS, a premium local-first smart home system running on FastAPI (Python). We need a developer to implement the full security and alarm logic. All processing is on-device — no images or audio leave the system. Testable locally with a webcam, no on-site hardware required. --- ALARM TYPES (5): - Intrusion: camera + microphone detection, different behavior when resident is home vs. away - Fire/Smoke: shut down AC + KWL immediately (no oxygen feed), activate escape route lighting - CO (Carbon Monoxide): separate from CO₂ — ventilation to maximum - Medical Emergency: person down → voice check → contact person called → auto ambulance ALARM LEVELS (3): ...

    €19 / hr Average bid
    €19 / hr Ortalama Teklif
    144 teklifler

    Enterprise Codebase Requirement Specification (50K+ LOC) Objective We are looking to source or generate a realistic enterprise-grade software codebase suitable for: Engineering capability evaluation AI code analysis benchmarking Architecture review exercises Enterprise software demonstrations Technical due diligence simulations The repository must resemble a real-world production engineering system with meaningful architectural depth, realistic module separation, and supporting SDLC artifacts. 1. Core Repository Requirements Minimum Codebase Size Total Lines of Code (LOC): 50,000+ Source LOC: 35,000+ Test LOC: 8,000+ Number of Files: 400+ Modules/Packages: 10+ Avoid artificially inflated LOC through: generated code vendor libraries minified assets duplicated files dummy filler classes 2. T...

    €239 Average bid
    €239 Ortalama Teklif
    43 teklifler

    Pearson PTE Enterprise Integration: Automated Registration, Seat Booking, & Multi-Tier Agent VMS Project Overview We are building an end-to-end PTE (Pearson Test of English) concierge platform. The system must manage the entire student lifecycle: from Agent-led lead generation and coupon-based payment bypass to headless account creation and real-time exam seat booking via the Pearson VUE B2B API. Detailed Scope of Work Module 1: The Intelligent Enrollment Gateway When a student initiates a booking (either directly or via an Agent's coupon), the system must branch based on their existing status: Discovery Step: Prompt: "Do you already have a PTE ID?" Path A (New User): Full headless registration flow. Capture PII -> Push to Pearson API -> Handle Verification Webh...

    €1184 Average bid
    €1184 Ortalama Teklif
    43 teklifler

    Overview The software is an intelligent classroom seating and student management system designed to digitally organise classroom seating arrangements, automate seat rotation, and provide instant access to student information through an interactive classroom layout. The platform allows administrators, teachers, or faculty coordinators to create multiple classes/courses, assign students to seats, automatically rotate seating positions weekly, and access detailed student profiles simply by clicking on a seat or student. The system is designed to improve classroom management, fairness in seating allocation, attendance tracking, and student monitoring while providing a clean and visual interface. Core Objectives Digitise classroom seating arrangements Automate weekly seat rotation Provide quick...

    €340 Average bid
    €340 Ortalama Teklif
    59 teklifler

    I’m building a web-based application whose core feature is an integrated AI model, and I need an experienced developer to take it from concept to a working, user-friendly product. The project is entirely software-focused; there’s no network or security audit component—just solid, clean code that brings the AI functionality to life in a browser. Here’s the picture: the AI model will handle the heavy lifting on the backend, returning predictions or generated content, while the frontend presents results in a modern, responsive interface. I already have high-level flow diagrams and a shortlist of preferred tools, but I’m open to your suggestions if they achieve faster iteration and reliable scaling. Your deliverable is a fully deployable web application: • ...

    €22 Average bid
    €22 Ortalama Teklif
    26 teklifler

    I want to develop a mobile app (Android ) and a website for rental properties, similar to 99acres. The main goal is to create a simple platform where users can easily find nearby rental properties. **Key Features Required (App + Website):** 1. **User Registration & Login** * Mobile number / OTP-based login 2. **Property Listing** * Property owners can list their rental properties * Add photos, rent, location, and details 3. **Location-Based Search (Important Feature)** * Users should be able to see all rental properties within a 4 km radius of their current location * Both map view and list view required 4. **Paid Contact Feature (Monetization)** * Users must pay ₹19 to view the property owner’s contact number * Payment gateway integration required ...

    €139 Average bid
    €139 Ortalama Teklif
    41 teklifler

    I need a custom Pine Script / TradingView tool for my multi-chart setup (8-chart layout). Requirements: - I use an 8-chart synchronized layout in TradingView. - When I double-click on any candle in one chart, I want the script/tool to automatically detect that exact candle on the other 7 charts as well (same timestamp/date-time candle). - After detecting the same candle across all charts, it should automatically draw a highlighted box/zone using: - Candle Open - Candle High The box/zone should appear automatically on all 8 charts at the corresponding candle position. Detailed behavior: 1. I double-click a candle on Chart 1. 2. The script identifies the candle timestamp. 3. On the remaining 7 charts, it finds the candle with the same timestamp. 4. It automatically creates a rectang...

    €19 Average bid
    €19 Ortalama Teklif
    22 teklifler

    I already have a custom AI chatbot backend system developed in FastAPI (Python backend). The system acts as a centralized AI service that communicates with multiple AI providers (OpenAI, Gemini, Claude, etc.) and returns responses through a single chatbot system. Since this platform does not allow formatting, so I put the detailed project requirements here: Access to this Google Doc is available to all

    €101 Average bid
    €101 Ortalama Teklif
    178 teklifler

    I’m building a Python-based web application whose core job is to streamline order management while exposing clean, well-documented APIs. The main stack is Django for the web layer, but I also want to leverage both Django Rest Framework (for the bulk of the REST endpoints) and a lightweight FastAPI micro-service where low-latency calls are critical. Here’s what I need from you: • Set up a fresh Django project (latest LTS) with models that cover orders, items, customers, and basic inventory counts. • Expose CRUD and filtered list endpoints through Django Rest Framework, secured with token or session auth. • Spin up a separate FastAPI service—running side-by-side or in a Docker container—that handles a performance-sensitive subset of endpoints ...

    €537 Average bid
    €537 Ortalama Teklif
    42 teklifler

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