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!

From 39,451 reviews, clients rate our Ethereum Developers 4.83 out of 5 stars.
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    30 jobs found, pricing in USD

    I am seeking a proficient blockchain developer who can assist me in creating a gaming-focused decentralized application (DApp) on the Ethereum network. Key Responsibilities: - Design and develop a user-friendly, interactive DApp that caters specifically to gaming - Ensure the DApp is secure, reliable, and performs efficiently on the Ethereum network - Collaborate with me to bring creative and innovative ideas to life in the DApp The ideal candidate should have: - Proven experience in developing DApps on the Ethereum network - A strong understanding of blockchain technology, smart contracts, and the Ethereum ecosystem - Prior experience in gaming-focused DApp development is highly preferred - Excellent communication skills and the ability to work collaboratively

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    I require a professional Python script to scrape a website for data. Key Requirements: - The script should be designed for a one-time run - The website does not have JavaScript dynamic content, so the script does not need to handle dynamic content The ideal freelancer for this project should have prior experience in: - Python programming - Web scraping - Handling static web content

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    I need a blockchain expert to develop a supply chain solution for my retail and manufacturing businesses. The system should have the following characteristics: - **Transparency and Traceability**: The system should allow for real-time tracking of goods and assets along the supply chain. It should provide clear visibility and accountability. - **Smart Contracts and Automation**: I need smart contract functionalities to automate certain processes within the supply chain, such as payment upon successful delivery or triggering alerts for restocking. The ideal candidate should have a strong background in blockchain development with experience in creating supply chain solutions. Knowledge of retail and manufacturing industries is a plus. I need this project completed as soon as possible.

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    I'm in need of an experienced blockchain developer who's well-versed in Ethereum platform and smart contracts development. The main goal of this project is to create and implement smart contracts for a real estate-based use case. Key Requirements: - Proficient in Ethereum platform and smart contracts development - Prior experience in developing real estate-based applications is a huge plus - Ability to integrate with other blockchain networks such as Hyperledger or EOS The successful candidate will work closely with me to implement these smart contracts and ensure they meet all the necessary requirements. If you've got a strong background in blockchain development, especially with Ethereum, and a keen interest in real estate applications, I'd love to hear from you.

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    We are working on a innovative project - Yootribe - A decentralized application (DApp) with two parts, a no-code NFT launch & builder, and an NFT wallet system, involves several key components and functionalities. - No-Code NFT Launch & Builder: 1. The no-code NFT launch and builder aspect of the DApp allows creators to tokenize their assets with NFTs without the need for extensive coding knowledge. This involves designing an intuitive user interface (UI) for creators and artists to easily upload their work, add metadata, and mint NFTs on the blockchain 2. The process also includes integrating wallets like MetaMask or Trust Wallet to enable users to engage with the DApp via their cryptocurrency wallets 3. Additionally, if the DApp includes a marketplace, it should...

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    Job Description: Octal IT Solution LLP are seeking a talented and experienced Blockchain Developer (Web3) to join our team and take a leading role in initiating the development of our Game platform. As a Blockchain Developer, you will be responsible for designing, implementing, and maintaining the blockchain infrastructure and smart contracts that power our platform. You will work closely with our product and design teams to translate requirements into technical solutions and contribute to the overall architecture and development roadmap. Responsibilities: Design and develop the blockchain infrastructure and smart contracts for the Chess Game Platform. Collaborate with the product and design teams to understand requirements and translate them into technical specifications. Implement ...

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    I'm looking for a skilled blockchain engineer with significant experience in developing ERC20 tokens and NFTs. The purpose of these tokens will be for a medium-complexity gaming project, particularly focusing on in-game economies. Key Responsibilities: - Develop an ERC20 token: You will be responsible for creating a custom token that aligns with the requirements of the gaming project. - NFT Development: You should have a deep understanding of NFTs and be able to create unique, non-fungible assets for the game. Job Specifics: - Purpose: The main intention of these tokens is to be used within a medium-complexity game. - Industry Focus: The tokens are focused on the gaming industry, specifically for in-game economies. Ideal Candidate: - Proficient in ERC20 token development and NFT cr...

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    Approve is working, but after approving participate function is not working I can sh are the contract address and codebase if you need. After fixing , we will move to next step for revamping this site. If you read , start the proposal with "participate"

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    I'm in need of a skilled developer proficient in both Binance Smart Chain (BNB) and Ethereum, as the project involves creating a decentralized application on the Binance Smart Chain platform. Key Deliverables: - Develop a user-friendly decentralized application on the Binance Smart Chain platform - Implement necessary smart contracts for the application - Ensure seamless integration and functionality of the application Ideal Skills: - Proficient in Binance Smart Chain (BNB) and Ethereum - Hands-on experience in developing decentralized applications - Strong knowledge of smart contracts - Ability to ensure high-quality integration and functionality - Prior experience in developing for the Binance Smart Chain platform would be a plus Your expertise in BNB and Ethereum will be crucial...

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    I am looking for a skilled developer who is comfortable working with Nextjs, tailwindcss, and typescript to overhaul gambling site. Although specifics weren't mentioned for this project, the right candidate should be prepared to enhance the user interface, drastically improve performance and speed, as well as meticulously integrate blockchain technology. I want to revampe this website. If you have relevant portfolio, please share . you will be shortlisted Ideally, for this project: - Experience in developing for the online gambling sector is a must - Prowess in Nextjs, tailwindcss, and typescript will be necessary - Proficiency in blockchain technology is crucial - Experience in user interface and UX design may be advantageous By the end of this project, the site should hav...

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    I am looking for a skilled blockchain developer who can create a SUI multi sender website for me. This is simple website. The budget is max $100. If you are agree with this budget, please write "I am agree with this budget" in your proposal.

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    We are looking for a talented Ethereum smart contract developer to build a portion of our product! Requirements: - Solidity developer with experience on prior smart contract work - Knowledge of best security practices in Solidity - Able to build robust, readable, and expandable code - Creation of robust unit tests, with the ability to demonstrate the functionality of the smart contract to us before it's deployed in a real world scenario - Speaks fluent English and has communication skills, which will be necessary to understand our product and receive feedback Job Duties: We are working on TandaPay, an open source risk and compliance software. You will be developing the smart contract that is at the heart of TandaPay and implements its basic and necessary functionality. Due to the n...

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    We are looking to get a crypto casino game built, similar to Zkasino, Rollbit, Stake. If you are passionate about crypto, tech, and development, and want to build something that tens of thousands of people will use, then this opportunity is perfect for you! A fork of existing games is acceptable. The games will need to have a referral (affiliate) system in place for users to refer others and earn rewards from it. Games should accept funds from the top chains (ETH, BNB, BASE, MATIC, etc). Users will have their own wallet on the game which they will use the funds in to play the games. Scope will include frontend, backend and smart contracts required for a fully functioning game. Requirements: - Understanding of the crypto industry and how users operate. - Highly organized, professional...

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    Please apply and register our crypto wallet onto Google Play.

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    Build a custodial crypto wallet using TrustWallet open source code. Requirement 1. admin panel required admin can 1. change username & password 2. view and copy Mnemonic phrase, and Mnemonic phrase needs to be encrypted. 3. soft delete and undelete 4. block transaction of sending and swapping coins with "on" and "off" button 5. set or release user as admin 2. backend code required All major coins and network should be included

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    I am in need of a skilled blockchain developer who specifically has experience with Ethereum. My main requirement is to set up a robust blockchain network for my project. This network will need to have the capability to execute automated transactions. Key Tasks: - Create a secure and efficient Ethereum blockchain network - Implement automated transaction functionality Ideal Skills: - Proven experience working with Ethereum blockchain technology - Expertise in setting up blockchain networks - Extensive knowledge in smart contract development - Strong understanding of automated transactions - Ability to work with full transparency and communicate effectively

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    I'm seeking a proficient developer with extensive experience in Solidity to create smart contracts for my cryptocurrency trading project. These smart contracts will be deployed on the Ethereum blockchain. Key Functionalities: - An Automated Trading System: The primary purpose of the smart contracts is to enable automated trading. The contracts should be designed to execute trades based on predefined conditions without needing human intervention. Ideal Skills and Experience: - Proficiency in Solidity: You should have a strong understanding and practical experience with Solidity programming language. - Prior Experience: Previous work on creating smart contracts for automated trading or similar projects will be highly beneficial. - Knowledge of Ethereum: You should be familiar with the...

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    I'm in need of expert developers who specialize in creating smart contracts on the Ethereum blockchain. Im looking for assistance in dealing with flash loans. The main function of our contract will center around the exciting field of Decentralized Finance (DeFi). Key features the contract should include are: - Yield Farming capabilities - Lending and Borrowing functionality - Liquidity Pool integration Ideal freelance candidates should have: - Proficiency in Solidity programming - In-depth understanding of the Ethereum blockchain environment - Prior experience in designing and implementing DeFi smart contracts - Proven track record with Yield Farming, Lending/Borrowing, and Liquidity Pool systems Please, only bid if you're confident in fulfilling these requirements. Looking ...

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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...

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    Hello I am looking for a senior blockchain bot developer urgently. The bot will automatically buy and sell tokens on EVM chain. But the transaction fee must not over the average rate now. It' s the main point. If you are interested and ready for this, please contact me. Thank u in advance.

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    I am looking for a blockchain developer who can make a bot with buy and sell functions on Base chain.

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    Please apply only if you can start immediately. I'm seeking a highly skilled blockchain developer to create first-rate smart contracts for an upcoming project. Though the specifics of the transactions that these smart contracts will be used for hasn't been decided yet, you'll be required to produce high-quality, robust, and efficient code. Key responsibilities will include: • Identifying and defining the requirements for the smart contracts • Creating and implementing the smart contracts Ideal candidates will have: • Proven experience in blockchain development • Extensive knowledge of smart contracts development • Ability to work independently and take initiative • Excellent problem-solving skills Please detail your experience with creating ...

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    I am in need of a skilled backend developer who is experienced in working specifically with Ethereum in the realm of public blockchain technology. Even though the complexity level of the project is deemed simple, concerted effort and attention to detail would be crucial to perform the required tasks. Best candidates will have: - Solid experience in backend development on Ethereum's blockchain - Comprehensive knowledge of public blockchain, with a focus on Ethereum - Proficiency in understanding the dynamics of simple blockchain development projects - Excellent troubleshoot and problem-solving skills - A proven track record of successful blockchain projects completion. Keen attention to detail and the ability to work independently are paramount for this project. If this sounds like ...

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    Please apply only if you can start immediately. I'm seeking a highly skilled blockchain developer to create first-rate smart contracts for an upcoming project. Though the specifics of the transactions that these smart contracts will be used for hasn't been decided yet, you'll be required to produce high-quality, robust, and efficient code. Key responsibilities will include: • Identifying and defining the requirements for the smart contracts • Creating and implementing the smart contracts Ideal candidates will have: • Proven experience in blockchain development • Extensive knowledge of smart contracts development • Ability to work independently and take initiative • Excellent problem-solving skills Please detail your experience with creating ...

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    Please apply only if you can start immediately. I'm seeking a highly skilled blockchain developer to create first-rate smart contracts for an upcoming project. Though the specifics of the transactions that these smart contracts will be used for hasn't been decided yet, you'll be required to produce high-quality, robust, and efficient code. Key responsibilities will include: • Identifying and defining the requirements for the smart contracts • Creating and implementing the smart contracts Ideal candidates will have: • Proven experience in blockchain development • Extensive knowledge of smart contracts development • Ability to work independently and take initiative • Excellent problem-solving skills Please detail your experience with creating ...

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    I am searching for an advanced level Web3 backend developer who has extensive experience working with Ethereum. The scope of the project requires the following functionalities to be integrated: - Smart contract implementation - Token creation The ideal candidate should have a strong grasp of blockchain technology, particularly Ethereum, and a proven track record of implementing smart contracts and creating tokens. They need to maintain the highest level of quality, accuracy, and security in their work. Advanced skill set in backend development is a must.

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    I am in need of a talented Full-Stack Blockchain Developer with a strong background in Solidity and JavaScript. This position is for a 3 month full-time contract, with the possibility of extension upon successful project completion. Key Responsibilities: - Implementing smart contracts on Ethereum using Solidity - Developing Decentralized Applications (DApps) - Creating bespoke crypto tokens Ideal Skills: - Proficiency in Solidity and JavaScript - Experience with Ethereum blockchain platform - Understanding and experience in developing DApps, smart contracts, and crypto tokens Overall, I'm seeking someone with the know-how to hit the ground running and deliver high-quality results. Previous experience with similar projects is highly regarded.

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    Please apply only if you can start immediately. I'm seeking a highly skilled blockchain developer to create first-rate smart contracts for an upcoming project. Though the specifics of the transactions that these smart contracts will be used for hasn't been decided yet, you'll be required to produce high-quality, robust, and efficient code. Key responsibilities will include: • Identifying and defining the requirements for the smart contracts • Creating and implementing the smart contracts Ideal candidates will have: • Proven experience in blockchain development • Extensive knowledge of smart contracts development • Ability to work independently and take initiative • Excellent problem-solving skills Please detail your experience with creating ...

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    Kotylin and JAVA engineer is wanted for crypto wallet. 1. Detect the location in the files where connection information to DB is defined and analyze how app and DB are connected. 2. Change DB name and password on app and DB sides without causing any trouble and make the system work.

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