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.

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    As an established blockchain company, we're currently in the market for a seasoned Ethereum blockchain specialist to join our team. This individual will primarily focus on DeFi, harnessing their expertise to further strengthen our offerings. Responsibilities: - DeFi Blockchain Development Skills & Experience: - Proven experience as a Senior Blockchain Engineer, particularly within Ethereum. - A strong understanding and experience in DeFi. - Developed smart contracts experience is a plus but not necessary. - Highly capable in designing sophisticated blockchain architecture. - Demonstrable experience implementing effective security measures. We look forward to receiving proposals from candidates with a robust understanding of Ethereum and a strong interest in developing for DeF...

    $2258 (Avg Bid)
    $2258 Сер. заявка
    23 заявки
    AI Avatar and Chat Bot site with crypto payments 4 дні(-в) left
    ПІДТВЕРДЖЕНО

    I need 8 avatars created (I will give 8 images of examples I need) and 8 different voices. The avatar will be from chest up and will be basically still and will be able to communicate with the user in real time back and forth like a real human conversation. This will be an adult niche ai chat bot so will need to be programmed accordingly. It should be a very simple but professional and responsive interface and easy to manage for me. Will have crypto membership payments and simple affiliate referral program. More work will be available ongoing.

    $740 (Avg Bid)
    $740 Сер. заявка
    45 заявки
    Next.js Dev for Frontend & Performance 3 дні(-в) left
    ПІДТВЕРДЖЕНО

    I'm looking for a skilled developer to work on a short project. The main focus will be to build frontend components and optimize the website's performance. Key Responsibilities: - Crafting robust, modular, and maintainable frontend components for an informational website. - Implementing performance optimizations to ensure the site loads quickly and operates efficiently. Ideal Candidate: - Proficient with and React, with a strong understanding of frontend development practices. - Experienced with performance monitoring and optimization techniques for web applications. - Familiar with minimalist design principles for a clean, simple, and user-friendly website interface. If you're a developer with a keen eye for frontend design and a knack for optimizing website per...

    $4 / hr (Avg Bid)
    $4 / hr Сер. заявка
    41 заявки
    Educational DApp with Wallet & Exchange Features 2 дні(-в) left
    ПІДТВЕРДЖЕНО

    I am looking for a proficient developer who can build a decentralized application (DApp) aimed at the education sector. Key features include: - User registration and login system: To ensure smooth and secure access for users, I want a registration and login system based purely on the traditional email and password approach. - Interactive learning modules: These should incorporate diverse content types such as video lectures, interactive quizzes, and downloadable resources. - Token Wallet Integration: The DApp should allow users to hold and manage tokens. Proficiency in smart contract development and encryption is a must. - Initial Coin Offering (ICO) & DEX Trading: The project extends to setting up an ICO for the tokens and enabling their trade on decentralized exchanges. Candidat...

    $1318 (Avg Bid)
    $1318 Сер. заявка
    103 заявки
    blockchain 1 день left

    Estoy valorando el realizar un hardfork de la blockchain de BTC y necesito ayuda para eso.

    $39 / hr (Avg Bid)
    $39 / hr Сер. заявка
    8 заявки
    IPFS Upload & Ethereum Network Deployment 1 день left
    ПІДТВЕРДЖЕНО

    We have developed our custom contract based on ERC721A that handles bulk minting in a single transaction. Now, I would need your help in doing the following tasks A- Uploading to IPFS: We have around 6k images. Out of which we would like to deploy 1K now and upload the rest of images for the collection later during our next sale phase. For IPFS pinning services, we would like to go with the Third Web - Here, I know that we can update uri for uploading the remaining images later for the remaining Please let me know if it would affect anyhow to the buyers who purchased NFTs before uploading these images. B - Regarding deployment on Testnet - Yes, before deploying the contract on Mainnet, we would like to check things on Testnet. Now, please let me know if there is any safe method of ...

    $22 / hr (Avg Bid)
    $22 / hr Сер. заявка
    26 заявки

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