Ethereum is an open-source distributed blockchain network that enables its users to create smart contracts, build and deploy decentralized applications (DApps) securely, and maintain a digital ledger of transactions without the need for a third-party mediator. An Ethereum Developer is a professional that has a strong understanding of blockchain technology and the necessary programming skills to create smart contracts, develop decentralized applications (DApp), implement crypto wallets and payment systems, and secure associated networks.

Here's some projects that our expert Ethereum Developers made real:

  • Created user authentication and 3rd-party verification systems for web applications
  • Developed secure payment systems and crypto wallets
  • Implemented blockchain-based trading networks
  • Developed smart contracts and token minting protocols
  • Created decentralized registries with publicly viewable records
  • Built bots to purchase tokens within the Ethereum or Binance blockchains

The Ethereum blockchain not only provides the tools for increased security measures but also provides tamper-proof smart contract functionality through which its users can directly interact with each other without the need for intermediaries. Our expert Ethereum Developers have years of experience in creating blockchain solutions for individuals, startups, and established companies. All of Freelancer.com’s vetted Ethereum Developers possess the necessary tech expertise to make any idea into a reality.

So if you have an idea in mind that can benefit from this incredible technology, why not post your project on Freelancer.com to hire an expert Ethereum Developer? Our vast array of qualified developers specialize in building customized solutions on the Ethereum protocol to enable your project’s success. Begin your journey towards production now by posting your project on Freelancer.com!

Da 38,610 valutazioni, i clienti danno una valutazione ai nostri Ethereum Developers di 4.84 stelle su 5
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    19 lavori trovati, prezzi in EUR

    I'm looking for a developer with in-depth experience in creating smart contracts on the Ethereum blockchain. Key Requirements: - Develop a multisend smart contract that supports ERC20 tokens. The contract should allow for the distribution of ERC20 tokens to multiple recipients in a single transaction. - Implement pause functionality as a security feature. This is crucial to protect the contract from any potential vulnerabilities or attacks. - We would like to be able to interact with the contract if possible (on etherscan) Ideal skills and experience: - Proficiency in Solidity, the programming language used for Ethereum smart contracts. - Prior experience in developing multisend contracts and incorporating pause functionality. - Knowledge of best practices for smart contract secur...

    €66 (Avg Bid)
    €66 Offerta media
    5 offerte

    I am in need of a proficient developer to create a web application, specifically a sniper app, for the TON Network Blockchain. I am open to the usage of JavaScript, Solidity, and nodejs for this project. I didn't specify the exact features, however, if you have experience with crafting applications of a similar nature, I'd prefer to see your take on it. I have an immediate need for this project, hence it is important that the work is completed as soon as possible. - Key Skills: JavaScript, Nodejs, Solidity - Experience: Previous work on sniper apps or similar projects, familiarity with the TON network blockchain would be highly advantageous.

    €620 (Avg Bid)
    €620 Offerta media
    15 offerte

    I am seeking a skilled Blockchain Developer who can create a Smart Contract on the Ethereum platform. The primary function of this smart contract will be to manage and optimize our supply chain processes. Key Responsibilities: - Developing a custom Ethereum smart contract that encapsulates the logic for our supply chain management system - Ensuring the smart contract is secure, efficient, and optimized for our specific use case Ideal Skills and Experience: - Proven experience in developing on the Ethereum platform - Strong understanding of Blockchain technology - Experience in deploying and managing Smart Contracts - Familiarity with supply chain management systems is a plus Please provide examples of previous work related to Ethereum Smart Contracts.

    €32 / hr (Avg Bid)
    €32 / hr Offerta media
    31 offerte

    I am looking for an intermediate level blockchain developer with a strong understanding of Ethereum. Key Requirements: - Proficient in developing smart contracts - Experience building decentralized applications (DApps) - Competency in token creation and management The ideal candidate should be able to work with the Ethereum blockchain platform and implement these functionalities effectively. A solid understanding of blockchain technology is essential, as well as the ability to work independently and deliver high-quality code. We are not looking for a beginner, so please apply only if you have the relevant experience and can demonstrate your previous work in this area.

    €40 / hr (Avg Bid)
    €40 / hr Offerta media
    39 offerte
    Complete current project 5 giorni left
    VERIFICATO

    Hello. I hope you are doing well. I want to complete my project. My previous developer was unable to continue working on the project and did not share all project information. I and he had an idea for a pre-sale, but I think it's about 80% complete. The idea of completing the project is open to experienced developers, and we hope to complete the project with someone who can both design and build it. I share current version. Please confirm it. If you are interested in my project, please do not hesitate to share your ideas or advice. ( Please check out the project and include in your proposal: total budget, time, schedule for completing one. ) Thanks Timothy

    €19 / hr (Avg Bid)
    €19 / hr Offerta media
    86 offerte

    I'm representing a travel online agency, looking to expand our services into the web3 space through the Camino Network. We are in need of a skilled developer to assist us with the following services: - Smart Contracts Development: As we transition to the web3 environment, we need to establish secure payment transactions within our system. The ideal candidate would have experience in developing smart contracts for e-commerce, specifically within the travel industry. - System Development for Selling/Buying Travel Services: We are also looking for support in building a robust system for selling and buying travel services. This system should seamlessly integrate with the Camino Network, providing a user-friendly interface for both us and our potential partners. The successful freelance...

    €222 (Avg Bid)
    €222 Offerta media
    18 offerte
    NFT Marketplace Developer on EVM 4 giorni left
    VERIFICATO

    I need to have a wallet connection feature on existing NFT marketplace. Key Requirements: - You should have a good understanding of NFT marketplaces and blockchain technologies. - Proficiency in Ethereum blockchain development. - Prior experience(Most important) with Web3Auth and wallet connection - Ability to develop a clean and minimalist user interface for the NFT marketplace. Please get in touch if you have the skills and experience to deliver on this project.

    €185 (Avg Bid)
    €185 Offerta media
    20 offerte
    Expert Zk-snark Developer 4 giorni left
    VERIFICATO

    Looking for a talented and motivated Zero-Knowledge Proofs developer to Implement a working product in a different blockchain. Please understand its a porting job to a new evm chain. If you have experience before in using zk snarks we will get along. This is not an on the job training work. Only interested in people who already done this. I am a dev, so please keep that in mind when you quote and estimate time.

    €34 / hr (Avg Bid)
    €34 / hr Offerta media
    29 offerte

    We are currently seeking a talented Web3, Smart Contract, Solidity developer to join our team. The ideal candidate will have experience developing on the EVM chain and a strong understanding of blockchain technology. Responsibilities: Design, develop, and test smart contracts on the EVM chain Implement and deploy decentralized applications using Web3 technologies Collaborate with team members to design and implement new features Keep up to date with the latest trends and developments in the blockchain space Requirements: Proficient in Solidity programming language Experience with and other blockchain development tools Familiarity with Ethereum and other EVM-based chains Strong problem-solving skills and attention to detail Excellent communication and teamwork skills If you are passion...

    €33 / hr (Avg Bid)
    €33 / hr Offerta media
    48 offerte

    I am in need of a developer with experience in deploying contracts on the Ethereum blockchain. Specifically, I want to deploy a polygon contract on Ethereum as soon as possible. example contract Key Points: - I have a high urgency requirement, the project needs to be completed ASAP.

    €12 / hr (Avg Bid)
    €12 / hr Offerta media
    40 offerte
    Expert TON Smart Contract Creation 4 giorni left
    VERIFICATO

    I'm searching for a stellar developer who can construct smart contracts on TON. The ideal candidate for this job is someone who understands FunC language like the back of their hand. Key Task: - Develop smart contracts on TON for staking propuse. Preferred Skills & Experience: - Extensive experience in coding with FunC language - Familiarity with TON and its smart contracts - Understands best practices for smart contract development and security This project offers the right candidate the opportunity to show their creativity and problem-solving skills, as there are no set requirements or reference examples to follow. We are ready to hire you right now, and can hire for more project with long time relation. Thx you.

    €521 (Avg Bid)
    €521 Offerta media
    16 offerte

    I want sustem do 1-user connect wallet with useWallet 2-send 10 slt oken from the token address 3-money ended after confirm transaction with wallet to admin address use react and this versions "@solana/spl-token": "^0.2.0", "@solana/wallet-adapter-base": "^0.9.23", "@solana/wallet-adapter-react": "^0.15.35", "@solana/wallet-adapter-react-ui": "^0.9.35", "@solana/wallet-adapter-wallets": "^0.19.32", "@solana/": "^1.33.0", need this mall task today

    €35 (Avg Bid)
    €35 Offerta media
    9 offerte
    Ethereum ERC-20 Token with Pre-Sale 2 giorni left
    VERIFICATO

    I'm seeking an experienced blockchain developer to create an Ethereum based ERC-20 token, with unique features of a private pre-sale and a vesting period. Key Responsibilities: - Develop an Ethereum ERC-20 token from scratch. - Implement a private pre-sale phase for initial investors. - Set up a vesting period for token distribution to prevent immediate selling off. Ideal expertise and skills: - Extensive experience in Ethereum blockchain and ERC-20 tokens. - Familiarity with smart contract security, specifically the implementation of a private pre-sale and vesting period. - Ability to create custom functionality beyond standard ERC-20 token framework. For this project, using typical smart contract security method like OpenZeppelin or Consensys Due Diligence is not preferred. ...

    €20 (Avg Bid)
    €20 Offerta media
    5 offerte

    I am seeking a developer to create a tool that can calculate the profit and loss (PnL) for any given Ethereum wallet address. The tool should be able to determine the total number of coins bought, as well as calculate the profit and loss from all transactions associated with the wallet. Key Features: Wallet Address Input: Users should be able to input any Ethereum wallet address. Transaction Analysis: The tool should analyze all transactions associated with the provided wallet address. Profit and Loss Calculation: Calculate the total number of coins bought and the profit and loss incurred from all transactions. User-Friendly Interface: The tool should have a user-friendly interface for ease of use. Skills Required: Proficiency in Ethereum blockchain technology. Experience in cryptocurre...

    €40 (Avg Bid)
    €40 Offerta media
    3 offerte

    I'm in need of a skilled developer who can create a custom module for the Cosmos SDK. This module will be focused on token creation. As I've never worked with the Cosmos SDK before, I require someone who is not only familiar with it but also has a strong grasp of blockchain development and tokenomics. Key Requirements: - Development of a custom module for the Cosmos SDK - Focus on token creation - Expertise in Cosmos SDK and blockchain development The successful candidate will need to be able to understand the project requirements, propose solutions, and implement them effectively. Strong communication skills are essential, as is the ability to work independently and proactively. A proven track record in blockchain development and previous experience with the Cosmos SDK are hig...

    €518 (Avg Bid)
    €518 Offerta media
    18 offerte

    As a blockchain expert, I am looking for a seasoned developer with specific experience in developing on the Cosmos SDK. My goal is to create a new blockchain, incorporating smart contracts functionality and custom token creation. Ideal Skills: - Strong background in blockchain technology, particularly in the Cosmos SDK - Proficient in developing custom tokens and smart contracts - Proven experience in creating new blockchains - Familiarity with decentralised applications is a plus You need to have a good understanding of blockchain concepts, and have a portfolio that demonstrates your ability to handle similar projects. Please provide a brief overview of your previous experience with Cosmos SDK and new blockchain development in your bid.

    €486 (Avg Bid)
    €486 Offerta media
    21 offerte

    I'm seeking a seasoned developer with extensive experience in the Cosmos SDK. The project entails a range of tasks including wallet integration, blockchain development and smart contract deployment. Your primary focus will be ensuring these are seamlessly integrated into the platform. Key Responsibilities: - Implement Wallet Integration: You must have a thorough understanding of how to integrate wallet services into the Cosmos SDK. - Develop Blockchain: Experience in developing blockchains using the Cosmos SDK is essential. You will be responsible for creating a robust and secure blockchain. - Deploy Smart Contracts: Your expertise in deploying smart contracts using the Cosmos SDK will be crucial to this project's success. Deliverables: - Seamless integration of wallet services...

    €522 (Avg Bid)
    €522 Offerta media
    23 offerte
    Need to build token on solana Terminato left
    VERIFICATO

    Token on solana Name : Make America Great Again Symbol: $Maga Supply : 1 billion Decimals : 9 Tax : 3% buy tax and 3% sell tax(3% to lp and 3% to marketing wallet) *Noone can hold more than 6.7%* (like a supply block) Marketing wallet : GQ5ZVUtoUeLvfAMmUxwMrSNnXacDYSwEZW2abJk2DKcW

    €196 (Avg Bid)
    €196 Offerta media
    3 offerte

    I am looking for a skilled developer to create a fully tested and secure website (frontend, backend + admin panel) with no bugs or issues using the MERN Stack. The key features of the front end design include a responsive design, user-friendly navigation, and custom animations. For the backend it would be clean, and fast high quality code with comments and good organisation and readability. The ideal candidate will have experience working with tight deadlines, provide constant high quality updates and be able to deliver quality work within a short timeframe. Tech: Front-end Framework: React.js with + Typescript Styling: Tailwind CSS Back-end Framework: Node.js with Database: MongoDB Goal: Build a cryptocurrency gambling website from PSD + Figma designs and requirements provided and ...

    €5293 (Avg Bid)
    €5293 Offerta media
    36 offerte

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