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.

De 20,643 opiniones, los clientes califican nuestro Web3.Js Developers 4.78 de un total de 5 estrellas.
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    14 trabajados encontrados, precios en USD

    crear una cryptomoneda en la red de ETH erc20 del mercado RWA

    $170 (Avg Bid)
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    4 ofertas

    Description: Are you a skilled MERN stack developer with experience in Web3 technologies? We're seeking a talented individual to join our team on a freelance basis to assist with the development of cutting-edge decentralized applications (dApps) using the MERN stack and integrating Web3 functionalities. Responsibilities: Collaborate with our team to design and develop decentralized applications (dApps) using the MERN stack. Implement smart contracts and integrate blockchain functionalities using or similar frameworks. Write clean, maintainable code and conduct thorough testing to ensure the reliability and security of the applications. Work closely with designers, product managers, and other stakeholders to translate requirements into technical solutions. Stay updated on emerging te...

    $23 / hr (Avg Bid)
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    I'm in need of an expert who can design an advanced market making bot to operate on Solana DEX. Key requirements: - Integration of predictive algorithms for efficient and profitable trades - Incorporation of standard deviation pricing for risk management - Effective reserve management to ensure liquidity is maintained While I'm not entirely sure about the trade frequency, it'd be useful to have this element be adjustable - depending on overall market conditions. For the successful participant, familiarity with Solana blockchain and prior experience in developing similar trading bots is crucial. Knowledge of predictive algorithms and pricing models will also be a significant advantage.

    $179 (Avg Bid)
    $179 Oferta promedio
    24 ofertas

    We are seeking a highly skilled and experienced Web3 Node.js Developer to fix an existing program market bot. The project involves debugging and improving the functionality of the bot. The ideal candidate should have a strong background in web3, Node.js, and ether.js. This is a small project that requires quick turnaround time. If you are a developer who excels in problem-solving, has a deep understanding of blockchain technology, and can work independently, we would love to hear from you. Apply now and showcase your expertise in web3 development! Fix this : (not working on sepolia Testenet ) This role requires: - Deep familiarity with Node.js and Web3 - Strong debugging skills - Proven track record in improving bot performance We are counting on you to bring our bot’s performanc...

    $232 (Avg Bid)
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    40 ofertas

    10x AI/3D models required for game that can talk and actions according to conversation. They need to look different from each other and be able to understand commands and look and act like a human. Users will pay for time with the model/bot and it will need to be able to respond and act in response to a list of commands Crypto payments will be incorporated as will a coupon function. Site will also have referral function. Site will need admin panel to run the site and pay referrers etc.

    $2611 (Avg Bid)
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    MUST APPLY: - If you've built already MEV Bot and Arbitrage bot in SOL - If you can prove how it works. Project Overview: I am seeking a skilled and experienced freelancer to develop a Maximum Extractable Value (MEV) bot for the Solana blockchain. This bot will specialize in front-running and arbitrage strategies. Responsibilities: Design and develop a robust MEV bot capable of identifying and exploiting profitable trading opportunities on the Solana blockchain. Implement front-running strategies to leverage the bot's position in the mempool (pending transaction pool) for advantage. Integrate arbitrage strategies to capitalize on price discrepancies between different DeFi protocols and exchanges on Solana. Utilize the Solana program library (SPL) and othe...

    $37 / hr (Avg Bid)
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    20 ofertas

    I'm seeking a proficient We3 developer who is well-versed in JavaScript to create a complex web application. This project will involve sophisticated interactions and data storage, so a standing understanding in these areas is critical. Key qualifications: - Proficient in JavaScript - Deep understanding of We3 - Previously designed advanced web apps - Experience with database management - Expertise in user interactions and operations Please share details about your background in We3 development, JavaScript, and any relevant previous projects.

    $17 / hr (Avg Bid)
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    Are you an experienced Decentralized Finance (DeFi) Developer looking to make a meaningful impact in the world of blockchain technology? Look no further! We are seeking a talented individual to join our dynamic team as a DeFi Developer. As a DeFi Developer, you will be responsible for designing, developing, and implementing decentralized applications and protocols that leverage blockchain technology. You will work closely with our team of developers to create innovative solutions that drive the future of finance. Key responsibilities include: - Designing and developing smart contracts for various DeFi platforms - Implementing decentralized applications and protocols on blockchain networks - Collaborating with team members to optimize code and improve performance - Staying up-to-date ...

    $36 / hr (Avg Bid)
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    80 ofertas

    I am looking for a professional experienced with WalletConnect v2 to integrate it into my staking website which is built on Binance Smart Chain. Key Goals: - To enable secure and convenient wallet connections to my staking website. - Facilitating easier wallet switching for seamless user experience. Ideal Candidate: - Has experience specifically with WalletConnect v2. - Deep understanding of Binance Smart Chain. - Proven track record in integrating bespoke blockchain solutions to enhance user experience.

    $629 (Avg Bid)
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    18 ofertas

    Finish my code I am looking to gather a skilled team to design a decentralized metaverse map and small play area. The primary purpose of this project is to enhance social interaction online. The interactive features I would love to see in the play area include: - Voice Chat: Users should be able to easily communicate with each other through intuitive and smooth voice chat. - Multi-user activities: There should be engaging activities that multiple users can participate in simultaneously. These activities should foster social interaction in a light-hearted, fun environment. - Avatar customization: Users should have the freedom to customize their avatars to their liking. This personalization aspect is crucial to engage the users more effectively and make them feel invested in the metavers...

    $866 (Avg Bid)
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    30 ofertas
    Pump Fun Site Development 2 días left
    VERIFICADO

    I am in need of a skilled web developer who can generate a Pump Fun Site. I need a developer with experience on eth crypto and smart contracts using BASE network

    $20 (Avg Bid)
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    1 ofertas

    I'm seeking to make an Crypto wallet app based on Metamask Crypto wallet with a different UI Please include in your application your experience pertaining to the skills mentioned above.

    $2223 (Avg Bid)
    $2223 Oferta promedio
    72 ofertas

    I require a Node.js TypeScript script to perform a one-time update to a Solana token's metadata, developed as per the metaplex-foundation/mpl-token-metadata standards. The script must have the capability to adjust the token's name, symbol, description, and mutability. While I do have a working example of how to create and mint the token, I now require support with updating its metadata. Key Requirements: - Proficiency with Node.js and TypeScript is a must. - A thorough understanding of, or previous experience with, metaplex-foundation/mpl-token-metadata is crucial. - Familiarity with the Solana platform and SPL Tokens is essential. - The script should be platform-independent, functioning across various operating systems without any particular restrictions. Take note that t...

    $217 (Avg Bid)
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    4 ofertas

    After this contest, there is the potential for an ongoing position. I'm seeking a highly experienced Web3 coder an experienced blockchain developer proficient in Solana and distributed ledger technology for a project focused on implementing dynamic smart contract functionalities. Key Responsibilities: - Design and develop dynamic smart contract - Implement upgradable contracts to ensure longevity and adaptability - Utilize your expertise in Solidity to carry out these tasks effectively This project aims to create a dynamic smart contract that can upgrade itself. If you have worked on similar projects or have the necessary skills, your expertise will be highly appreciated. This is not just about writing codes; your innovative input will be an added advantage. Ideal Ski...

    $50 (Avg Bid)
    Garantizado
    $50
    10 participaciones

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