Node.js is an open-source cross-platform JavaScript runtime environment that allows developers to easily deploy JavaScript based applications and services. Node.js is built on Chrome's V8 JavaScript engine and can be used to create server-side applications that are secure, scalable, fast and efficient. Node.js Developers have the skills to build secure and performant web applications that can handle large volumes of data in an efficient way.

A Node.js Developer is a skilled programmer with experience in building modern web applications that employ technologies such as Node.js, JavaScript, HTML5, and CSS3. Node.js Developers are responsible for developing server-side web applications, creating user interfaces for websites or web applications, and developing APIs for servers or browsers. These developers also create custom plugins and modules that extend the functionality of existing applications or websites.

Using Freelancer.com to recruit Node.js Developers highly skilled at developing web applications is a great way of getting the job done quickly and efficiently.

Here’s some projects that our expert node.js Developers made real:

  • Creating websites with complex functionalities
  • Hosting applications on cloud environments
  • Extracting text from scanned documents or images
  • Building web scrapers
  • Setting up chatbot integrated with OpenAI API
  • Developing user interfaces for websites
  • Developing APIs for server/clients
  • Setting up projects in PC

If you're searching for a Node.js Developer to join your team, hiring an experienced freelancer on Freelancer.com would be an ideal choice for completing your project quickly and efficiently with high quality results. It takes only minutes to post a project; after that you will be able to connect to potential freelancers who have the skills and experience needed for your projects. Hire a freelancer on Freelancer now!

De 289,772 opiniones, los clientes califican nuestro node.js Developers 4.9 de un total de 5 estrellas.
Contratar a node.js Developers

Node.js is an open-source cross-platform JavaScript runtime environment that allows developers to easily deploy JavaScript based applications and services. Node.js is built on Chrome's V8 JavaScript engine and can be used to create server-side applications that are secure, scalable, fast and efficient. Node.js Developers have the skills to build secure and performant web applications that can handle large volumes of data in an efficient way.

A Node.js Developer is a skilled programmer with experience in building modern web applications that employ technologies such as Node.js, JavaScript, HTML5, and CSS3. Node.js Developers are responsible for developing server-side web applications, creating user interfaces for websites or web applications, and developing APIs for servers or browsers. These developers also create custom plugins and modules that extend the functionality of existing applications or websites.

Using Freelancer.com to recruit Node.js Developers highly skilled at developing web applications is a great way of getting the job done quickly and efficiently.

Here’s some projects that our expert node.js Developers made real:

  • Creating websites with complex functionalities
  • Hosting applications on cloud environments
  • Extracting text from scanned documents or images
  • Building web scrapers
  • Setting up chatbot integrated with OpenAI API
  • Developing user interfaces for websites
  • Developing APIs for server/clients
  • Setting up projects in PC

If you're searching for a Node.js Developer to join your team, hiring an experienced freelancer on Freelancer.com would be an ideal choice for completing your project quickly and efficiently with high quality results. It takes only minutes to post a project; after that you will be able to connect to potential freelancers who have the skills and experience needed for your projects. Hire a freelancer on Freelancer now!

De 289,772 opiniones, los clientes califican nuestro node.js Developers 4.9 de un total de 5 estrellas.
Contratar a node.js Developers

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    178 trabajos encontrados
    Build and Integrate API Connection
    6 días left
    Verificado

    I need a developer who can design and implement an API connection from scratch, then integrate it smoothly into my existing system. I am flexible on the architecture—RESTful, GraphQL, or even SOAP—so please suggest the approach you feel best suits modern maintainability and performance. Because the system’s purpose is still being refined, the API should be built in a way that can serve multiple potential use-cases, such as: • syncing data with external partners, • feeding internal applications, • or acting as a gateway for future third-party services. Key expectations • End-to-end setup: specification, development, basic documentation, and a tested deployment. • Secure authentication and solid error handling. • Clear code comments...

    €26 / hr Average bid
    €26 / hr Oferta promedio
    108 ofertas

    Buscamos talento para unirse a nuestro equipo en la arquitectura de la conciencia activa, impulsado por IA. Tendrás la oportunidad de trabajar en desarrollo frontend y backend con React y Node.js. También desarrollamos nuestras propias soluciones de chat y RPA, donde podrás aportar y crecer. Si estás interesado y disponible, envíame la hoja de vida y programamos un meet.

    €518 Average bid
    €518 Oferta promedio
    107 ofertas

    I already trade intraday through Zerodha and have a clearly defined strategy; what I now need is an app that plugs into the Kite Connect API and executes those trades for me automatically. The single-minded goal is fast, reliable trade execution during market hours, with automated order placement based on parameters I will supply. Here is what matters to me: • The code must authenticate to my Zerodha account securely, listen for my entry/exit signals (I can expose them as a simple REST endpoint or as a CSV-based watchlist—whichever is easier for you), and place market or limit orders instantly. • Every order response, rejection, or partial fill should be captured in a log so I can audit what happened at the end of the day. • Positions should be squared off before...

    €688 Average bid
    €688 Oferta promedio
    26 ofertas

    We are building a fintech governance platform called ClearTek that manages milestone-based capital governance and investor transparency for film productions. The platform acts as a governance layer for film financing, tracking project deposits, their conditions, and their approval status, without ever taking custody of funds. ​ We already have an Electron prototype with the UI mostly built, but the code is still in prototype shape and needs to be cleaned up, structured for production, and wired to a reliable persistence layer. ​ The four core components we need implemented cleanly are: ​ Deposit / investment registry (structured list of deposits/investments with metadata and status). ​ Custodian awareness (the platform tracks which external party holds funds; the app itself never holds...

    €10 / hr Average bid
    €10 / hr Oferta promedio
    55 ofertas
    Automated Lead Gen & Outreach Tool
    6 días left
    Verificado

    Project: Lead Generation and Email Outreach Automation Tool About the Business We are a custom joinery and shopfitting company based in Melbourne, Australia. We want to reach out to potential clients in a systematic and professional way. We need a tool that finds these businesses automatically, collects their contact information, and sends them personalised emails on our behalf. What the Tool Must Do 1. Find Businesses Search for businesses across 305 Melbourne suburbs in these five categories: Builders and construction companies Architects Interior designers Cabinet makers Shop fitters For each business found, the tool must collect: Business name Address Phone number Website Email address Instagram profile link LinkedIn profile link Contact person name (if available) Email address is...

    €329 Average bid
    €329 Oferta promedio
    82 ofertas

    I need an end-to-end mobile app for Pakistan’s property market that mirrors the ease of but stays focused on one core feature for now: rich property listings. Every listing must handle high-resolution photos, embedded videos, and interactive 360-degree virtual tours so buyers can explore a place without stepping inside. User reviews are not a launch requirement, yet the architecture should leave a clean pathway to bolt that module on later without major refactoring. I’m deliberately leaving out agent directories and side-by-side comparisons in this first release; phase one is all about getting the listings experience right. Here’s what I expect at hand-over: • Android and iOS builds ready for store submission • A lightweight web-based admin panel where I ca...

    €486 Average bid
    €486 Oferta promedio
    38 ofertas

    Bonjour, Je recherche un développeur senior ou une équipe technique pour personnaliser et déployer une plateforme de billetterie événementielle multi-organisateurs destinée au marché africain. L’objectif est de créer une plateforme similaire à Eventbrite, Shotgun ou Ticketmaster, adaptée aux paiements Mobile Money africains. Base technique Le projet sera basé sur le script : et ses applications mobile pour user, organisateur et scan Le développeur devra le personnaliser et ajouter plusieurs fonctionnalités. Fonctionnalités à développer Refonte Design (Web + Mobile) UI/UX moderne design premium optimisation mobile-first Sélection du pays Page d’in...

    €1093 Average bid
    €1093 Oferta promedio
    84 ofertas

    We are a Bangalore based Fintech Startup into Mutual Fund, SIPs and Insurance We are looking for a MERN Full Stack Developer with at least 7 years of Experience along with hands on experience on AWS to conduct Technical Interviews through google meet for candidates with 3 to 5 years of experience. The Interview should be conducted to test the LIVE Coding skills of the candidates with 90% testing in coding skills and 10 % in theoretical knowledge. We want to check the overall coding skills of the candidates in MERN tech stack + AWS as a Full-stack Developer. Apply only if you have 7+ years of MERN exp and have experience in conducting LIVE coding testing of the candidates. You shoul be able to provide a detail feedback about each candidate after each Interview.

    €9 Average bid
    €9 Oferta promedio
    4 ofertas

    We are a Bangalore-based Fintech Startup into Mutual Funds and SIPs domain. We are looking for a 6+ years of experience as a Full Stack Developer in MERN Tech Stack with AWS hands-on experience resource for Conducting Technical Interviews for candidates with 3 to 5 years of experience in Full Stack Development (MERN) This technical Interview needs to be conducted on Google Meet, and the questions should be purely Machine Testing/ Coding Testing of the candidates, with very limited theoretical questions to be asked. Our overall aim in conducting the Interviews of these candidates should be to check how good these candidates are in coding, and they must DEMONSTRATE IT IN LIVE CODING. Please apply ONLY IF you have 7+ years of Experience in MERN Tech Stack with AWS and have experience in co...

    €11 Average bid
    €11 Oferta promedio
    6 ofertas

    Saya ingin membangun sebuah situs e-commerce berbasis web. Fokusnya murni pada pengembangan perangkat lunak—bukan desain grafis atau penulisan konten—jadi saya membutuhkan developer yang nyaman bekerja di stack Web dan terbiasa menyiapkan toko online end-to-end. Gambaran singkat kebutuhan: • Produk dapat di­unggah, dikategorikan, dan di­kelola melalui dashboard admin. • Pengunjung bisa menambahkan barang ke keranjang, melakukan checkout, dan menerima konfirmasi otomatis. • Sistem pembayaran harus mendukung setidaknya transfer bank dan e-wallet populer; integrasi gateway seperti Midtrans atau Xendit diprioritaskan. • Halaman responsif untuk desktop dan mobile, memaksimalkan kecepatan muat serta SEO on-page dasar. • Keamanan dasar (HTTPS,...

    €17 / hr Average bid
    €17 / hr Oferta promedio
    14 ofertas

    Saya ingin membangun sebuah situs e-commerce berbasis web. Fokusnya murni pada pengembangan perangkat lunak—bukan desain grafis atau penulisan konten—jadi saya membutuhkan developer yang nyaman bekerja di stack Web dan terbiasa menyiapkan toko online end-to-end. Gambaran singkat kebutuhan: • Produk dapat di­unggah, dikategorikan, dan di­kelola melalui dashboard admin. • Pengunjung bisa menambahkan barang ke keranjang, melakukan checkout, dan menerima konfirmasi otomatis. • Sistem pembayaran harus mendukung setidaknya transfer bank dan e-wallet populer; integrasi gateway seperti Midtrans atau Xendit diprioritaskan. • Halaman responsif untuk desktop dan mobile, memaksimalkan kecepatan muat serta SEO on-page dasar. • Keamanan dasar (HTTPS,...

    €26 / hr Average bid
    €26 / hr Oferta promedio
    15 ofertas

    I am looking for a developer to build a simple mobile-friendly web interface that allows users to place a phone call directly from their browser by pressing a single button. The user presses a **Call button**, the browser activates the microphone and speaker, and the system connects the user to a predefined phone number using the Twilio Voice API. The destination phone number must remain hidden and handled securely on the backend. When the call ends or the user disconnects, the page should automatically redirect the user to a URL that we provide (for example our company homepage). This project is intended to be a **simple MVP prototype**, not a full telephony system. --- Core Features Single Call Button Interface * One large “Call” button * No dial pad * Simple, clean i...

    €157 Average bid
    €157 Oferta promedio
    106 ofertas

    I need a robust, real-time scraping tool that monitors an accounting / legal / financial-services website and records every visitor’s key details the moment they arrive. This tool must work within and outside website both ways. That means, if I upload this script within website, it should start working. While if I enter a particular domain in the tool without loading script, it should start giving same results as if script is loaded. The script must capture: • IP address • Name, phone and email • The exact Google or other search engine search keyword that led the user to the site • The specific page URL they land on and continue to browse • Any sign-up or form-fill actions performed • Geolocation (city/region/PIN Code) and device type Once eac...

    €220 Average bid
    €220 Oferta promedio
    26 ofertas

    Project Description I am looking for an experienced full-stack developer or a small development team to build the MVP of a modern web platform that combines several key components within a single ecosystem. The platform will include an AI-assisted interface, a professional services marketplace, a collaboration workspace for users and professionals, and a lightweight social interaction layer. The goal is to create a secure, scalable application where users can interact with an AI assistant, discover and connect with professionals, and manage interactions within the platform. ⸻ Core Platform Components Authentication & User Roles The system must support secure user authentication and role-based access. Different types of accounts will exist, including general users and profession...

    €4058 Average bid
    €4058 Oferta promedio
    136 ofertas

    我正在使用 OpenClaw 作为业务后台,希望把 TikTok 账号完整接入其中,以实现更高效的用户互动。核心目标是让系统能够直接对接 TikTok API,帮助我在后台就能: • 自动抓取并显示视频的实时点赞、评论数据 • 一键回复或点赞评论,提高互动频率 • 监控粉丝增长,并输出每日/每周统计报表 我最看重的是「用户互动」效果,因此在技术实现之外,也请为我预留拓展空间,方便后续通过发布有趣的视频内容来持续提升粉丝量。 交付需求: 1. 搭建与 TikTok API 的安全对接(OAuth 授权、权限管理)。 2. 在 OpenClaw 中新增模块或插件,前端界面可查看与操作点赞、评论。 3. 粉丝增长分析:提供折线图及关键指标导出(CSV/JSON)。 4. 完整部署文档与简明用户手册,确保我无需额外开发即可维护。 如果你熟悉 TikTok 开发者工具、Webhook 以及常见的 Node.js 或 Python 框架,并能保证接口稳定、数据合规,请与我联系并简要说明你的实现思路与相关经验。

    €403 Average bid
    €403 Oferta promedio
    4 ofertas

    Backend Developer Needed: Build Lightweight API + Static Site Builder + GHL Integration for NuRevur Impact Engine Project Summary NuRevur is building a lightweight backend service (“Impact Engine”) that connects: GoHighLevel (GHL) Gemini FlashLite (AI content generation) Static HTML templates A simple PWA (manifest + service worker) NuRevur’s proprietary workflow logic (PA‑OS) This backend receives structured data from GHL, calls Gemini to generate content, injects that content into templates, builds a static website + PWA, deploys it, and sends the results back to GHL. This is not a full SaaS platform. This is a small, clean Node.js backend with 2–4 endpoints and a static site builder. What You Will Build You will implement a small Node.js/Express backend t...

    €427 Average bid
    €427 Oferta promedio
    141 ofertas

    Project Overview We are building a custom software system for a Flexible Intermediate Bulk Container (FIBC) manufacturing company. The goal is to create a production planning and operations management platform that connects marketing, planning, production, logistics, and management teams. The system will manage customer orders, container planning, production scheduling, production tracking, inventory, and dispatch operations. This is not a simple website. It is a manufacturing ERP-style system. A working prototype already exists and we want to continue expanding and improving it. Current Technology Stack Backend Python (FastAPI) Frontend React.js Tailwind CSS Database MongoDB Authentication JWT-based role access The system is also built as a Progressive Web App (PWA) so it can r...

    €1822 Average bid
    €1822 Oferta promedio
    51 ofertas
    Olx similar site - cloneee
    6 días left
    Verificado

    **Job Title:** Web Developer Needed to Build a Modern Online Marketplace Platform (Similar Concept to OLX) **Job Description:** We are looking for an experienced web developer or development team to build a modern online marketplace platform where users can post listings, browse items, and communicate with sellers. The platform should be inspired by the concept of a classifieds marketplace like OLX, but it must be a unique implementation with its own design, structure, and functionality. **Main Features Required:** * User registration and login system * User profiles and dashboard * Ability for users to create, edit, and manage listings * Upload multiple photos for each listing * Categories and subcategories for listings * Advanced search and filtering (location, category, price, etc....

    €468 Average bid
    €468 Oferta promedio
    190 ofertas

    We are building a smart networking companion and we need an individual, end-to-end developer who is equally comfortable in the back-end (Node.js with ), the front-end (), and mobile extensions in React Native. We already have the phase 1 of the mobile completed in Flutter, which we plan to refactor in React native in the near future. The first milestone centres on the web application, but we want every line of code written with cross-platform reuse in mind. Core features we plan to ship: secure user authentication, rich contact management, a PWA-ready front-end, AI-powered OCR inside the feed, recurring payments and subscriptions, calendar integration, and messaging. You will own these features from API consumption/correction to pixel-perfect interface. Robust DevOps is non-negotiable. ...

    €10 / hr Average bid
    €10 / hr Oferta promedio
    170 ofertas

    I’m looking for a seasoned Node.js developer to extend the functionality of my current application. The project is already in production and comes with a well-structured codebase plus up-to-date documentation, so you’ll be able to dive straight in without guesswork. What I need added • User authentication – secure sign-up / login, token handling (JWT or similar) and role-based access. • Real-time updates – WebSocket or integration so clients receive instant data pushes without refresh. • Data processing – background jobs or stream handling to crunch incoming data efficiently before it hits the API. You’ll have direct access to the repository, the API spec, and a short architectural overview. I’m open to your input on tooling...

    €29 / hr Average bid
    €29 / hr Oferta promedio
    152 ofertas

    I’m looking to deploy a fully-functional, revenue-driven gambling website that is immediately playable on both desktop and mobile. The site must ship with a modern, sleek interface—fast to load, crisp on high-resolution screens, and intuitive enough for first-time players to start wagering without a tutorial. Core game package I need installed and working out of the box: • Bingo • Head Tail • Slots • 7 Up 7 Down • Aviator • Colar • Rummy • Dragon Tiger My expectation is a turnkey solution: the games, an integrated wallet or chip system, basic KYC hooks, and a clean admin panel where I can adjust odds, view real-time revenue, and run player reports. If you have an existing engine that already supports these titles, I&rs...

    €219 Average bid
    €219 Oferta promedio
    21 ofertas
    Upgrade Live Flutter Calling App
    6 días left
    Verificado

    I run a live Flutter calling platform backed by Node JS where users browse a list of listeners and start voice calls. The core flow works, but I now need a round of improvements that cover UI/UX changes, new features, and some lingering bug fixes. What has to be added • In-app chat so callers and listeners can exchange text during or outside of calls. • A default background-running capability that keeps calls, notifications, and ongoing sessions alive when the user moves the app to the background. What has to be refined • Overall interface polish—smoother navigation, cleaner layouts, and any visual tweaks that make the journey from “choose a listener” to “end call” feel effortless, all without losing our current brand identity. • ...

    €7 / hr Average bid
    €7 / hr Oferta promedio
    46 ofertas

    PROJECT OVERVIEW We are seeking an experienced full-stack developer or a small development team to build the Phase-1 Minimum Viable Product (MVP) of a secure web platform that enables users to upload structured documents and receive simplified AI-generated explanations. The objective of this MVP is to create a secure, scalable, and reliable web application capable of: • Accepting uploaded documents • Extracting text and structured values from reports • Generating simplified educational explanations using AI • Displaying results through a clean and intuitive interface • Allowing registered users to securely store and manage their reports The platform will initially launch as a web application optimized for desktop and mobile browsers. Important: The system mus...

    €267 Average bid
    €267 Oferta promedio
    38 ofertas

    No agencies. This is a long-term, full-time position paid on a fixed monthly basis. The role covers the complete MERN stack, so you’ll move comfortably between React/Next on the client and Node/Express with MongoDB on the server while keeping quality and performance consistent across the board. Day-to-day work centres on four key areas: • Building and hardening a secure user authentication system (JWT, OAuth, refresh-token logic). • Designing robust MongoDB schemas and integrating them cleanly with our existing data layer. • Developing and documenting REST/GraphQL APIs that power both web and upcoming mobile clients. • Polishing the front-end UI, ensuring responsive design and pixel-perfect implementation from Figma mock-ups. A typical week equals ...

    €260 Average bid
    €260 Oferta promedio
    56 ofertas

    Title: Seeking Experienced Team for GPS Vehicle Tracking System (Fleet Management) – iOS, Android, Web & Backend Development Company: [Company Name] Location: Remote / Hybrid / [City] Project Type: Full Product Development (Web Panel + Mobile Apps + Backend Infrastructure) About the Project: We are looking for a skilled development team to build a modern Fleet Management and GPS Vehicle Tracking System from scratch. The platform will enable real-time vehicle tracking, route optimization, fuel consumption analysis, and violation alerts (speeding, idling, geofencing). Scope of Work: 1. Web Dashboard: A comprehensive admin panel for fleet managers to view vehicles on a map, generate reports, and manage users. 2. Mobile Applications (iOS & Android): Native or cross-platform a...

    €258 Average bid
    €258 Oferta promedio
    75 ofertas

    I’m kicking off a brand-new application and need senior-level support across the entire MERN stack. The project is green-field, so we’ll be shaping database design in MongoDB, APIs with and Node.js, and a modern React.js front end together from day one. Scope The goal is to move rapidly from architecture and wireframes to a production-ready MVP. You’ll help set up the repo, choose libraries and patterns that keep performance and maintainability in focus, and implement features end-to-end: schema design, REST/GraphQL endpoints, state management, component styling, deployment pipelines—whatever it takes for a clean launch. Collaboration Code reviews, frequent Git commits, and clear pull-request discussions are essential. I’ll provide product direction, UI...

    €246 Average bid
    €246 Oferta promedio
    45 ofertas

    Senior Node.js Marketplace Architect / Technical Lead We are looking for a senior Node.js developer / software architect to audit and stabilize an existing marketplace platform before launch. The platform is a fashion marketplace with auctions and normal product sales. Tech stack: Node.js (Express) PostgreSQL Redis React (Vite) WebSockets (real-time bidding) Stripe / payment integrations Sendcloud shipping integration The platform is already developed by a team of developers and consists of: Backend API Frontend marketplace Admin dashboard Your role will be: • Perform a full codebase audit • Identify architectural issues and potential race conditions • Fix critical bugs before launch • Review auction logic and real-time bidding system • Review payment flow...

    €25 / hr Average bid
    €25 / hr Oferta promedio
    148 ofertas

    I need a Discord specialist who can jump in right away and refine an already-running server. Your first task will be to tidy up the channel layout and put a clear permission structure in place so every role behaves exactly as intended. At the same time, you’ll be enhancing the existing bot: • Add a few new commands that follow the coding style already in the repository. • Tweak several current commands for better usability. • Connect the bot to an external API so it can pull fresh data on demand. Everything is live, so I’m looking for someone who is comfortable working on production while users are online, testing changes in a staging channel first and then rolling them out smoothly. If you work primarily in , , or another framework, that’s fine...

    €20 Average bid
    €20 Oferta promedio
    35 ofertas

    I am creating SupplyGate, a web-based procurement platform that streamlines everything from purchase requests to purchase orders. The core modules I need delivered are: • User management for three distinct roles—Admins, Suppliers and Purchasers—each with tailored permissions and screens. • Standard email-and-password authentication, with secure password reset and basic account-lock rules. • A supplier directory where Admins and Purchasers can add, edit or deactivate supplier records. • Purchase Request flow: Purchaser drafts, Admin approves. • RFQ generation directly from an approved request. • Supplier quotation portal so invited suppliers can submit their prices and terms online. • A side-by-side quotation comparison table that ...

    €478 Average bid
    €478 Oferta promedio
    135 ofertas

    I need a straightforward platform that lets me enter raw exam scores, have them graded automatically, and release the final results to students in a clean, secure interface. The grading engine has to support three schemes out of the box—CGPA, traditional letter grades, and a simple pass/fail toggle—so I can choose the one that fits each course without rewriting formulas every term. Grade boundaries, GPA weightings, and pass thresholds must stay fully editable from an admin panel. Once the marks are processed, the system should publish them to a student-facing portal where each learner can log in and view only their own transcript. A printable report and optional CSV/PDF export will help when we need physical copies or bulk data sharing. Role-based authentication, a small audit...

    €115 Average bid
    €115 Oferta promedio
    35 ofertas

    I want to take my Instagram marketing from mostly manual to almost hands-free. The plan is to tap Claude’s API for both ideation and copywriting, then push the finished assets straight to Instagram without me touching the Meta Business Suite each day. Here’s what I need you to build: • Code (Python or Node is fine) that sends my brief prompts to Claude, receives polished captions, hook ideas, hashtag sets, and suggested visual concepts. • An automation layer that pairs those outputs with images or short videos I drop in a folder, then schedules them to Instagram as Posts, Stories, and Reels through the Graph API. • A simple calendar or CSV input so I can load a week or month of content at once. • Clear, inline comments plus a README that covers setup...

    €335 Average bid
    €335 Oferta promedio
    88 ofertas

    Job Title: Full stack Developer Job Type: Part-time Location: Remote (USA time zone, normal business hours) Job Summary: We are seeking an experienced Full stack Developer to join our dynamic team on a part-time basis. The ideal candidate will have proficiency in Python, Node.js, and React. You will be responsible for designing and implementing scalable web applications, ensuring smooth user experiences, and collaborating with other team members through written communication due to our asynchronous work culture. Key Responsibilities: Develop and maintain web applications using Python, Node.js, and React. Collaborate with cross-functional teams to define, design, and ship new features. Write clean, maintainable, and efficient code. Troubleshoot, debug, and upgrade existing systems. Pa...

    €17 / hr Average bid
    Acuerdo de Confidencialidad
    €17 / hr Oferta promedio
    43 ofertas

    我正在为一款 Telegram 机器人规划“绑定钱包—回传结果”的完整链路,需要一位熟悉 Telegram Deep Linking、Web3 钱包 SDK 以及前端跳转逻辑的开发者协助完成落地。 目标流程 1. 用户在 Telegram 内点击「绑定钱包」按钮 2. 弹出钱包选择窗,默认列出:MetaMask、OKX、ABpay、Binance 3. 用户选择后,相应钱包 App 被唤起 4. 钱包加载我们自定义的承载页面(需能接收并解析来自 Telegram 的参数,如 user_id、session_token 等) 5. 用户在该页面完成绑定或执行签名/交易 6. 绑定结束后,页面通过 Deep Link 自动跳回 Telegram 7. Telegram 机器人收到结果并向用户显示成功或失败状态 我需要你交付 - 一个可直接部署的前端承载页面(HTML/JS/React 均可) - Deep Link 参数设计与示例代码(Telegram ↔ Wallet 双向) - 钱包 SDK 调用示例,确保上述四款钱包均可完成授权/签名 - Telegram 机器人侧的回调处理示例(Node.js/TypeScript 优先) - 简明的 README,说明环境变量、启动方式与测试步骤 验收标准 - 四款钱包均能顺利跳转并完成授权或交易签名 - Deep Link 参数在往返过程中无丢失,并被机器人正确解析 - 成功/失败提示在 Telegram 中实时反馈 - 代码结构清晰,可由其他开发者二次接入扩展更多钱包 如果你具备 Web3 应用跳转经验并熟悉 Telegram Bot API,期待与你合作!

    €4 / hr Average bid
    €4 / hr Oferta promedio
    3 ofertas

    The project centres on building a full-scale, multi-vendor marketplace that mirrors Amazon’s core buyer-seller experience. The platform must accommodate separate buyer, seller, and admin areas, each with its own dashboard, while sharing a single, searchable product catalogue and a smooth, secure checkout flow. Key requirements and expectations • Core features – Vendor onboarding with storefront creation, product listing, inventory, pricing, discount and shipment management – Buyer journey from product discovery to order tracking, returns and reviews – Real-time search, category filtering, wish-lists and personalised recommendations – Responsive design that loads quickly on mobile and desktop – Flexible payment-gateway layer all...

    €108 Average bid
    €108 Oferta promedio
    48 ofertas

    No errors appear on the frontend, yet the records never land in the backend, so the breakdown is clearly in the API hand-off from to ERPNext. I need someone who truly understands both the Frappe REST API and modern (React 18, Node, TypeScript, Axios/fetch) to trace the request flow, pinpoint the failure, and deliver a clean, tested patch. I am happy with the existing codebase otherwise, so the job is strictly about restoring reliable, real-time syncing in that one direction. Please plan to: • audit the current integration layer and identify the exact call or webhook chain that drops the merchant payload • implement the fix (whether that means adjusting authentication, request formatting, or ERPNext endpoint configuration) without breaking anything else • add a qui...

    €145 Average bid
    €145 Oferta promedio
    66 ofertas

    We are looking for an experienced Full-Stack JavaScript developer with strong experience in building Chrome Extensions and browser automation tools. This is for an existing production project (Phase 1 already live). We are expanding the system and need an experienced developer to help with Phase 2. Required Skills: • JavaScript / TypeScript • Chrome Extension Development • Node.js / Express backend • Browser automation experience • Handling complex workflows in browser environments • Experience with CAPTCHA handling / automation is a plus • API integrations • Debugging and optimizing automation scripts Nice to Have: • Experience with Puppeteer / Playwright • Experience working with authentication flows • Experience building scalable...

    €217 Average bid
    €217 Oferta promedio
    29 ofertas

    ## Job Title **Full-Stack Cloud Engineer: Migrate Lovable and Supabase-based SaaS to AWS (Postgres, Auth, Edge Functions)** ## Project Overview We are looking for an experienced Cloud Migration Specialist to move our existing application from **Supabase Cloud** to a self-managed **AWS infrastructure**. Our service is a digital vault and asset management platform ("Relay") built with **React (Vite), TypeScript, and Tailwind CSS**. The current backend logic relies heavily on Supabase-specific features, and we need to replicate this functionality 1:1 within the AWS ecosystem to improve scalability and allow for custom domain branding (specifically for Google OAuth). --- ## Current Status * **Frontend:** React (Vite) / TypeScript / shadcn/ui. * **Database:** PostgreSQL (Supaba...

    €478 Average bid
    €478 Oferta promedio
    117 ofertas

    with modern architecture, better UI/UX, easier maintenance, and long-term scalability. The new system should cover core school operations such as: admissions student management attendance fee management exams and report cards timetable certificates and ID cards notifications parent/student/teacher communication pdf and excel reports and dashboards role based access payment gateway integration help/support features Technology: Java EE / MySQL Backend, Modern Web UI, Flutter App

    €549 Average bid
    €549 Oferta promedio
    73 ofertas

    Ищем самостоятельного full-stack разработчика (React + Node.js/Python), который станет техническим ко-пилотом CEO DocsInBox и будет быстро превращать продуктовые идеи и прототипы в работающий код и деплой в прод (AI-тендерист для ресторанных закупок)

    €1823 Average bid
    €1823 Oferta promedio
    93 ofertas
    Telegram app
    5 días left
    Verificado

    Project Title: Build HTML5 Game Portal (PlayRize) Description: I am looking for a developer to build a web platform called PlayRize, similar to MiniClip or CrazyGames, where developers can upload HTML5 games. Main features needed: • Developer accounts with login/signup • Game upload system (ZIP HTML5 game files) • Upload form with title, description, thumbnail, and tags • Games go into admin approval before publishing • Admin dashboard to approve/reject submissions • Game pages where users can play HTML5 games • Featured, popular, and new game sections • Search and category filters • Developer dashboard showing views and revenue • Revenue share tracking for each game • Legal agreement checkbox during upload (all...

    €3483 Average bid
    €3483 Oferta promedio
    97 ofertas

    **Job Description (Paragraph):** We are seeking an experienced Software Developer or Technical Evaluator who can effectively assess the performance and coding practices of both Frontend and Backend Developers through recorded screen sessions, without requiring access to the source code. The ideal candidate will have strong expertise in modern software development workflows, the ability to analyze development approaches, debugging methods, architecture decisions, and overall problem-solving skills by observing developers’ real-time or recorded working processes. This role involves reviewing screen recordings of developers performing tasks, evaluating their technical proficiency, development efficiency, adherence to best practices, and ability to design, implement, and troubleshoot so...

    €3 / hr Average bid
    €3 / hr Oferta promedio
    24 ofertas

    **Project Title:** Multi-Tool Utility Website Development (PDF, Image, Converter & Calculator Tools) **Project Description:** I want to develop a professional multi-tool utility website where users can access different online tools from a single platform. The website should have a clean modern UI, fast processing, and mobile responsive design. **Required Tools / Features:** 1. JPG to PDF Converter 2. PDF to JPG Converter 3. Image to Text (OCR) 4. PDF to Text Extractor 5. Kruti Dev to Unicode Converter 6. Unicode to Kruti Dev Converter 7. Scientific Calculator 8. Inch to Feet Converter 9. Feet to Meter Converter 10. Area Calculation Tool (sqft, sqyd, meter etc.) 11. Interest Calculator (Simple & Compound) 12. Image Upload + Drag & Drop support 13. Download generated files ins...

    €74 Average bid
    €74 Oferta promedio
    32 ofertas

    I need a full-featured website for our competitive online hockey league that ties seamlessly into the platforms our players already use. All users must authenticate through Discord OAuth, then verify themselves by linking an Xbox Live or Playstation Network account. Once inside, the site will surface real-time player, team, and league statistics that I will supply through an external data source (populated Google Sheet spreadsheet cells from third-party API); your job is to pull, cache when sensible, and display that data in an attractive, responsive front end. Two permission-based back-office areas complete the build: Team Management Portal This area is visible only to authorised team staff and must include: • Roster management (add, release, or trade players) • Player p...

    €2186 - €21864
    Destacado Sellado
    €2186 - €21864
    128 ofertas

    Contest: Premium Chess Academy Website Development (Modern UI/UX + High Performance + SEO) Contest Description Hello, I am looking for an experienced developer or professional team to design and develop a complete website for a chess academy. The website should have a modern, clean, and professional look, with a blue and white theme. It should provide a smooth user experience, fast loading speed, and be fully responsive on mobile, tablet, and desktop. The goal is to create a high-quality website that is easy for parents and students to navigate and learn about our chess programs. Pages Required Home Page About Us Courses / Programs Online Chess Classes Trainers / Coaches Student Achievements Tournaments Blog / Learning Resources Gallery Testimonials Contact Page Registration / Enquiry Form...

    €236 Average bid
    Sellado
    €236
    72 participaciones

    I have an early HTML mock-up of “SolveSnap” and now I want it turned into a fully functional learning platform. The site must cover the core school subjects—Math, Science and English—and be flexible enough to expand later. Users should be able to ask homework questions and receive instant, AI-driven explanations; feel free to plug in Claude, ChatGPT or any comparable model for the responses. Core interactive layer • Real-time live chat, one-click video calling and a threaded discussion forum all living inside the same UI. • A smart calculator widget. When a visitor keys in the code “2012”, that widget should seamlessly launch a mini-portal of browser games, introduced by a short plane-takeoff animation. The games themselves already exist; ...

    €224 Average bid
    €224 Oferta promedio
    110 ofertas

    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...

    €12 / hr Average bid
    €12 / hr Oferta promedio
    23 ofertas

    We require development of a modern, mobile-friendly hospital website for a multi-speciality hospital. The website should have an easy admin panel, doctor self-management portal, and online appointment booking system based on doctor availability. The core of the build is an intuitive calendar where visitors can pick an available date and time, confirm in one click, and automatically receive a reminder by email or SMS. A clean, minimalist interface is essential so patients of all ages can navigate without confusion, whether they are on a phone, tablet, or desktop. Core Objectives Provide complete hospital information online Enable patients to book appointments easily Allow hospital staff to manage doctors and schedules Ensure mobile-first design Improve patient engagement and visibility on ...

    €504 Average bid
    €504 Oferta promedio
    123 ofertas

    We are a Bangalore-based Fintech Startup into Mutual Funds, SIPs domain. We are looking for a 6+ years of experience as a Full Stack Developer in MERN Tech Stack with AWS hands-on experience resource for Conducting Technical Interviews for candidates with 3 to 5 years of experience in Full Stack Development (MERN) This technical Interview needs to be conducted on Google Meet, and the questions should be purely Machine Testing/ Coding Testing of the candidates, with very limited theoretical questions to be asked. Our overall aim of conducting the Interviews of these candidates should be to check how good these candidates are in coding, and they must DEMONSTRATE IT IN LIVE CODING. Please apply ONLY IF you have 6+ years of Experience in MERN Tech Stack with AWS and have experience in condu...

    €9 Average bid
    €9 Oferta promedio
    8 ofertas
    Cross-Exchange Crypto Risk Bot
    4 días left
    Verificado

    I need a low-latency crypto-futures companion that lets me specify exactly how much of my balance I am willing to risk, then sizes and fires the order in real-time—no more, no less. Primary exchange focus is Mexc, with Bybit and Binance immediately after (xbt support can follow the same interface). The bot can run as a lightweight desktop app or CLI, I am happy with Python, Node, or Rust under the hood as long as it speaks each exchange’s REST & WebSocket API and keeps execution times under 200 ms. Core workflow • I enter the trading pair, my stop-loss price, and the % of balance of my account I want to risk. • The tool pulls the live mark/last price, calculates the exact position size, and places either a market or limit order (my choice each time). &bull...

    €98 Average bid
    €98 Oferta promedio
    26 ofertas

    Google arbitrage using Tiktok ads/ TikTok Cloaking / Tiktok Human-as-a-Proxy Project Overview I am investigating a sophisticated advertising fraud pattern that appears to be draining my advertising budget on Google Ads. Initial evidence suggests that real users arriving from ads on TikTok may be unknowingly manipulated through the TikTok in‑app browser to perform unintended Google searches, which ultimately trigger clicks on my paid Google Ads campaigns. In some cases, this traffic also results in form submissions on my landing pages, which makes the activity appear legitimate. The suspected mechanism resembles a “Human‑as‑a‑Proxy” traffic manipulation funnel, where real users unknowingly execute actions that benefit a third‑party arbitrage or fraud system. The observed t...

    €153 Average bid
    €153 Oferta promedio
    88 ofertas

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