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.

From 17,705 reviews, clients rate our Web3.Js Developers 4.87 out of 5 stars.
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    Hello freelancers! I have a live NFT marketplace working on Ethereum blockchain. Please check here. I want to upgrade my NFT marketplace with some functions like buy order and sell order like OpenSea. I will provide full source code - smart contract and frontend. Please feel free to apply if you think you can handle this project from the beginning to the end. Thanks.

    $34 / hr (Avg Bid)
    $34 / hr Avg Bid
    64 bids

    I am looking for an expert developer who can create a 3D scene and animate some of the object ( also add the reflection texture things) using Desired Length: - The animation should be as written in pdf, just simple panning one Style: - I do not have a specific style in mind for the animation. It can be realistic, cartoon-like, or abstract. Timeline: - I would like the project to be completed within a month. Ideal Skills and Experience: just want the thing working : ) If you are interested in this project and have the skills and experience needed, please submit your proposal.

    $14 (Avg Bid)
    $14 Avg Bid
    6 bids

    I am looking for a skilled developer to build a web3 app similar to with some changes. The app will primarily focus on some social networking and web3 features. The ideal candidate should have experience in web3 development and be familiar with social networking platforms. Key requirements for the project include: - Developing a web3 dapp with social networking features - Designing the app to be similar to , but with some changes - Ensuring the app is user-friendly and visually appealing - Implementing functionality for messaging and connecting with other users - Creating a marketplace for users to buy and sell products - Launching the app in less than a month - should be able to build from Features, UIUX, prototype, to first version. Skills and experience required: - Proficiency in ...

    $4344 (Avg Bid)
    $4344 Avg Bid
    73 bids

    I am looking for a Web3.0 E-Commerce Developer with experience in Javascript to help me build my website. The project requires the following features: - Customizable product options - Integrated payment gateways - AI-powered product recommendations For the development platform or language, I prefer "Other" rather than Ethereum or Solidity. The estimated timeline for this project is more than 4 weeks. Ideal skills and experience for this job include: - Strong proficiency in Javascript - Experience in developing Web3.0 E-Commerce websites - Knowledge of customizable product options and integrated payment gateways - Familiarity with AI-powered product recommendations If you have the required skills and experience, please reach out to me.

    $2366 (Avg Bid)
    $2366 Avg Bid
    22 bids

    Web3 application development to movie tickets

    $27 (Avg Bid)
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    11 bids

    I am searching for a qualified blockchain developer to lead a project on a private network. I have a specific use case and application in mind and anticipate some intermediate-level complexity. The desired blockchain platform is to create a private blockchain platform. If chosen, I expect the developer to be able to work on the project with minimal guidance, and all nuanced aspects with regard to the specific use case would be provided. Close communication throughout the process is key. They should be experienced in creating private blockchain platforms and be able to work efficiently to ensure success.

    $14 / hr (Avg Bid)
    $14 / hr Avg Bid
    7 bids

    Razl has an enterprise asset management platform that needs to send/receive data from a web based desktop portal to/from users in the field who will be using an iPad app. We need an Australian based react native developer that will translate the HTML/Javascript platform that uses: 1. Jquery 2. widgets (grids, comboboxes, etc) 3. Primus nodejs module for websockets We have the current UI of the app that was written in Titanium as a guide of what we need. The app will evolve for other UI designs for iOS & Android, using separate instances from the Razl Asset Management platform.

    $2130 (Avg Bid)
    Local NDA
    $2130 Avg Bid
    43 bids

    Number of Screen: 1. Login Screen 2. Create Account Screen 3. Forgot Password 4. Import Wallet 5. Home Screen 6. Send /Receive Coin Screen / Transaction 7. Transaction confirmation screen 8. Transaction List (tabs) 9. Token List 10. Add Network Screen 11. Modal popup Functions: 1. Create a function to create a EVM based wallet a. Return: Output mnemonic phrase 2. Create a function to restore wallet using mnemonic phrase 3. Create a function to encrypt private key using password 4. Create a function to create N number of wallet 5. Create a function to import wallet , input would be private key or keystore json. 6. Write a function to get balance of all wallets

    $250 - $750
    Sealed
    $250 - $750
    55 bids

    Critical review a web3 developer dashboard. Its rough, looking for your opinion, what you would add, initial stages only

    $34 / hr (Avg Bid)
    NDA
    $34 / hr Avg Bid
    12 bids

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