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.

Conform celor 18,741 recenzii, clienții îi evaluează pe Web3.Js Developers cu 4.85 din 5 stele.
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    AlphaTunes 5 zile left

    I bought a ThemeForest theme from Envato, the company behind ThemeForest. I would like someone to make some customizations and get the site up and running for me. I would like to add web3 connectivity and change the themes esthetics to customize the website to meet my project needs.

    $1116 (Avg Bid)
    $1116 Oferta medie
    44 oferte

    Start your proposal by answer 54 + 6 I am looking for a freelancer to work on some features for our chrome extension. The developers needs to be well versed with Javascript, ReactJS and chrome APIs. Having knowledge of ethersjs will be a plus. The selected developer will work on the following: 1. Being able to detect the domain the user is currently on 2. Show popups to alert user if they are on a fraudulent domain (API will be given to fetch the info) 3. Data scrapping - to collect some fraud domains/smart contracts info (source will be told) 4. Minor bug fixes

    $382 (Avg Bid)
    $382 Oferta medie
    11 oferte
    React Web3 Dapp Development 4 zile left

    Project Title: React Web3 Dapp Development Project Description: We are seeking a skilled freelancer to develop a React Web3 Dapp into an existing React template we have () that will allow us to accept crypto payments for documents that we are selling. The Dapp will need to integrate WalletConnect on the BSC network and support payments in BUSD, USDC, DAI, or BNB. The Dapp will also need to perform POST calls to our backend when is required and display the result on the frontend according our needs. Scope of Work: Web3 Connectivity: The freelancer will create and integrate Web3 connectivity using WalletConnect (Web3Modal 2.2.1 with wagmi) on the BSC network on an existing React template. Crypto Payment: The freelancer will add support for crypto payments in BUSD, USDC, DAI, or BNB and det...

    $271 (Avg Bid)
    $271 Oferta medie
    51 oferte

    Project is based on Blockchain , you just have to create the Frontend and connect it with Backend

    $12 (Avg Bid)
    $12 Oferta medie
    2 oferte

    We are looking for Ethereum and web3 experts to make our Web3 project a success. Our team already includes talented designers and front-end developers, and all the groundwork has been finished to start our project. Following the launch of the NFT mining site, we plan to launch several related websites such as games, airdrops, NFT marketplaces, and DEX. Review project plans and explore possibilities. Our projects are both urgent and long-term, so we need the fastest experts. At first please check our project to get all information and roadmap, check the implementation or possibility, then contact me. A quick and complete implementation will increase your chances of being hired. At first I recommend you to check the project. Please explain to me about errors that occurs at the first on the...

    $4592 (Avg Bid)
    $4592 Oferta medie
    18 oferte

    We must implement the feature of connecting wallet in our mobile app. This app is React Native + Typescript App. And the wallets you must connect are walletconnect, metamask, coinbase, torus wallet. You must based on Web3Auth. Please contact me if you are expert in connecting wallet in react native app using web3auth. This is not a web task, but a react native task. I will provide more details to the candidates.

    $215 (Avg Bid)
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    31 oferte
    Write Smart Contract on TRON 3 zile left

    Write and integrate Smart Contract on TRON Blockchain for USDT for a membership Portal. Smart Contract must be verified and name should be portal name.

    $317 (Avg Bid)
    $317 Oferta medie
    18 oferte

    I'm looking for a talented freelancer to work on a React decentralized exchange (DEX) project. For this project, I'm looking for someone with experience in JavaScript/Node.js, HTML/CSS, and React technologies. The successful applicant should have plenty of past work and demonstrable experience to draw from, as well as a detailed project proposal. It's Urgent and Long tems

    $176 (Avg Bid)
    $176 Oferta medie
    16 oferte

    We are looking for an experienced DApp developer to build a website capable of staking TRON token. The website should have multiple staking pools with different APR and staking periods. The ideal candidate will have experience with building similar DApps and is familiar with the TRON ecosystem. Responsibilities: Develop a DApp website capable of staking TRON token Create multiple staking pools with different APR and staking periods Integrate a user-friendly UI/UX for easy navigation Implement smart contracts for automatic staking and unstaking Ensure the security and scalability of the DApp Requirements: Strong experience in DApp development Proficiency in smart contract development and Solidity programming language Knowledge of the TRON ecosystem and its tools such as Truffle, Remix, an...

    $909 - $1817
    $909 - $1817
    0 oferte
    NFT gated project 23 ore left

    Build the mining and loan protocol in token gated SocialFi ecosystem.

    $1435 (Avg Bid)
    $1435 Oferta medie
    26 oferte

    I want a app which will store your whole mobile pn block chain Like I have mobile one and I sign up and I stored it on block chain Then I will take different mobile sign up put the credentials and access mobile one. And will need donate option in it and the mobile will be live no need to download. UI/UX should be good. Also keep in mind that I am student so funding will be less

    $6082 (Avg Bid)
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    3 oferte

    It’s working fine but not the best performance We want that enhanced Also, some of the fonts are epic, when you create trade you can see the fonts they are bad Also, the token drop-downs are not perfect The first drop-down doesn’t show the whole coin list And the position of the limo and market button when you want to swap I believe if the developer is able to test the current ui he can also point out other things he will note We just want the dapp working perfect and fetch data for the dashboard also. The chart is fixed but doesn't work when deployed online only works locally not sure why it's being blocked The trade data font are not well formated…this is the preffered font --font-sm: 1.4rem; --font-base: 1.5rem; --font-md: 1.6rem; --font...

    $162 (Avg Bid)
    $162 Oferta medie
    10 oferte

    I want a app which will store your whole mobile pn block chain Like I have mobile one and I sign up and I stored it on block chain Then I will take different mobile sign up put the credentials and access mobile one. And will need donate option in it and the mobile will be live no need to download. UI and UX must be good

    $18 (Avg Bid)
    $18 Oferta medie
    2 oferte

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