Web3.js Jobs

Thuê Freelancer Kiếm tiền từ công việc freelance
Về Web3.js

Web3.js is an open source software library that helps integrate with decentralized applications built on Ethereum blockchain technologies. As Ethereum is built on blockchain, Web3.js works as a bridge between the Ethereum blockchain and its users without transcending any rules or data from the blockchain network.

A Web3.Js Developer is an experienced programmer for building decentralized applications using Ethereum development framework and the Javascript library, Web3. When developers use Web3.js, they can craft secure and reliable applications upon a wide-scale peer-to-peer blockchain network with the help of a trustless system of data storage and transfer.

Here are some projects that our expert Web3.Js Developers made real:

  • Creating user authentication features on existing web apps
  • Setting up marketplaces for NFTs
  • Integrating ETH payment systems with React dApps
  • Connecting web sites to TikTok pages
  • Crafting smart contracts on Ethereum technology
  • Writing Typescript & React code
  • Auditing smart contracts prior to deployment

It's projects like these that show the full potential of what a Web3.Js Developer can do for your project. With their knowledge of web development and proprietary scripting language, our experienced developers were able to craft advanced yet secure applications for clients that created real value for all parties involved. With this in mind, we invite you to post your own project and set out to hire a remarkable development team with Freelancer.com today.

Từ 25,291 nhận xét, các khách hàng đã đánh giá Web3.Js Developers 4.84 trên 5 sao.
Thuê Web3.Js Developers
Về Web3.js

Web3.js is an open source software library that helps integrate with decentralized applications built on Ethereum blockchain technologies. As Ethereum is built on blockchain, Web3.js works as a bridge between the Ethereum blockchain and its users without transcending any rules or data from the blockchain network.

A Web3.Js Developer is an experienced programmer for building decentralized applications using Ethereum development framework and the Javascript library, Web3. When developers use Web3.js, they can craft secure and reliable applications upon a wide-scale peer-to-peer blockchain network with the help of a trustless system of data storage and transfer.

Here are some projects that our expert Web3.Js Developers made real:

  • Creating user authentication features on existing web apps
  • Setting up marketplaces for NFTs
  • Integrating ETH payment systems with React dApps
  • Connecting web sites to TikTok pages
  • Crafting smart contracts on Ethereum technology
  • Writing Typescript & React code
  • Auditing smart contracts prior to deployment

It's projects like these that show the full potential of what a Web3.Js Developer can do for your project. With their knowledge of web development and proprietary scripting language, our experienced developers were able to craft advanced yet secure applications for clients that created real value for all parties involved. With this in mind, we invite you to post your own project and set out to hire a remarkable development team with Freelancer.com today.

Từ 25,291 nhận xét, các khách hàng đã đánh giá Web3.Js Developers 4.84 trên 5 sao.
Thuê Web3.Js Developers

Bộ lọc

Tìm kiếm gần đây của tôi
Lọc theo:
Ngân sách
đến
đến
đến
Loại
Nhiều kỹ năng
Ngôn ngữ
    Tình trạng công việc
    Áp dụng bộ lọc
    7 công việc được tìm thấy
    Finish Multiplayer Poker MVP with MongoDB
    5 ngày left

    Socifi, our real-time Texas Hold’em poker web app, already has the core game loop, React lobby and table UI, and working game logic. The missing piece is a solid back end that persists data and ties everything together. What needs doing right away • Re-enable and wire up MongoDB so user profiles, game states (hands, pots, blinds, results), and transaction/payment records are stored, queried, and indexed efficiently. • Patch the current authentication flow so sign-up, login, and token refresh are reliable across reconnects and multiple tabs. • Activate or complete the half-finished features in the existing codebase (e.g., player avatars, hand history modal, chip top-up) and remove unused remnants. • Prepare environment variables, seeding scripts, and pr...

    Phát triển API Phát triển phía máy chủ Chuỗi khối Tiền điện tử Quản lý cơ sở dữ liệu JavaScript MongoDB Node.js Hợp đồng thông minh Web3.js
    $7381 Average bid
    $7381 Giá đặt trung bình
    79 lượt đặt giá
    Đặt giá ngay
    Create CritiQ based Smart Contracts
    1 ngày left
    Đã xác thực

    Hi I will share the details with the shortlisted candidates. Thanks

    Chuỗi khối Tiền điện tử Mật mã Tài liệu hóa Ethereum Hyperledger Hợp đồng thông minh Solidity Truffle Web3.js
    $20 / hr Average bid
    $20 / hr Giá đặt trung bình
    1 lượt đặt giá
    Đặt giá ngay
    Need a suite of robust, reusable smart contracts
    1 ngày left
    Đã xác thực

    Hi I will share the details with the shortlisted candidates. Thanks

    Chuỗi khối Tiền điện tử Mật mã Tài liệu hóa Ethereum Hyperledger Hợp đồng thông minh Solidity Truffle Web3.js
    $12 / hr Average bid
    $12 / hr Giá đặt trung bình
    2 lượt đặt giá
    Đặt giá ngay
    Deploy & Integrate Ethereum Smart Contract
    1 ngày left

    I already have a draft smart contract, but it needs a careful review and a few modifications before going live. Once the code is solid, I want it deployed on Ethereum (that is my first choice, though I’m open to discussing BSC or Polygon if you feel they offer clear advantages). After deployment, the contract must be fully integrated into my website so users can interact with it through MetaMask. A smooth, reliable Web3 flow is essential—wallet connection, transaction signing, on-chain confirmations, and any UI feedback should feel seamless and secure. The job breaks down into three main parts: • Audit, adjust, and finalise the existing contract code, then compile, test, and verify it on the chosen network. • Deploy the verified contract and wire it up to the s...

    Tích hợp API Phát triển phía máy chủ Chuỗi khối Ethereum Phát triển giao diện người dùng Hợp đồng thông minh Solidity Web3.js
    $500 Average bid
    $500 Giá đặt trung bình
    68 lượt đặt giá
    Đặt giá ngay
    Fix Polymarket Order Placement Issue
    1 ngày left
    Đã xác thực

    hello, i'm building a social layer for polymarket but can't place an ordrer trhough i keep getting this error XHR POST [HTTP/3 400 175ms] [CLOB Client] request error {"status":400,"statusText":"","data":{"error":"invalid signature"},"config":{"transitional":{"silentJSONParsing":true,"forcedJSONParsing":true,"clarifyTimeoutError":false},"adapter":["xhr","http","fetch"],"transformRequest":[null],"transformResponse":[null],"timeout":0,"xsrfCookieName":"XSRF-TOKEN","xsrfHeaderName":"X-XSRF-TOKEN","maxContentLength":-1,"maxBodyLength":-1,"...

    API Phát triển API Chuỗi khối HTTP JavaScript JSON React.js Phát triển web Dịch vụ Web Web3.js
    $160 Average bid
    $160 Giá đặt trung bình
    117 lượt đặt giá
    Đặt giá ngay
    Need a full-stack Web3 developer
    13 giờ left
    Đã xác thực

    Hi I will share the details with the shortlisted candidates. thanks

    Chuỗi khối Ethereum Next.js Node.js React Native React.js Hợp đồng thông minh Solidity Typescript Web3.js
    $450 Average bid
    $450 Giá đặt trung bình
    53 lượt đặt giá
    Đặt giá ngay
    Need a suite of robust, reusable smart contracts
    9 giờ left
    Đã xác thực

    Hi I will share the details with the shortlisted candidates. Thanks

    Chuỗi khối Tiền điện tử Mật mã Tài liệu hóa Ethereum Hyperledger Hợp đồng thông minh Solidity Truffle Web3.js
    $500 Average bid
    $500 Giá đặt trung bình
    2 lượt đặt giá
    Đặt giá ngay
    Hiển thị 1 đến 7 trong số 7 bài tham dự
    Giá hiển thị theo USD
    Kết quả từng trang

    Các bài viết khuyên đọc dành cho bạn