Looking for a company that inspires passion, courage and creativity, where you can be on the team shaping the future of global commerce? Want to shape how millions of people buy, sell, connect, and share around the world? If you’re interested in joining a purpose driven community that is dedicated to crafting an ambitious and inclusive work environment, join eBay – a company you can be proud to be with. The roleBased in the heart of Manchester city centre, this newly created hybrid role will lead a team in a dynamic and agile environment and be responsible for engineering and delivering solutions which are capable of onboarding millions of users into the web 3.0 space. As a Lead Protocol Engineer, this opening will advocate for best practice, modern, agile software engineering practices and technologies.We are looking for an experienced Web3 Solidity Engineer to join the team and help us define, deliver and realise our vision for the KnownOrigin / eBay NFT protocol. You will have the ability to work across teams and lead an internal Web3 community. What you’ll be working on:Build rich configurable and customizable NFT contracts covering various different use cases and requirementsWorking closely with the wider Product and Engineering teams to flesh out and deliver a feature rich and extensive set of smart contracts for use on the platformBuilding order book protocols responsible for settling millions of trades in a secure, GAS efficient and UX friendly wayBuilding efficient payment protocols for FX swaps and secure custodial and non-custodial NFT and other crypto asset exchanges.Design and build an extensible NFT contracts frameworkIntegration of the smart contract suite into various parts of the application stack.Helping upskill less experienced members of the team in how to write and deploy complex smart contract systems You will need to have:Experience in building and supporting different types of Smart contract standards include ERC721, ERC721(A), ERC1155, EIP-2981, ERC20, ERC173, ERC712, EIP1271Experience in understanding the various forms of smart contract upgradability patterns and when to use them, along with trade-offsExperience in integration of smart contracts into various applications including web applications, API services and indexers.Proficient and professional production experience in building and deploying Solidity based Smart Contracts on EVM based block chainsExtensive experience in using NodeJS/TypeScriptA strong background in writing test driven and secure smart contract applicationsAwareness of common smart contract security flaws and hacks etcAn understanding of basic cryptography techniques and patternsExperience in empowering others to learn Nice to have:Rust programming languageSubgraph hosted or decentralised network development and deploymentUnderstanding and or delivery products with leverage modern forms of Account AbstractionIPFS / Arweave or other Decentralised file storage solutionsFoundry, hardhat or Truffle suiteSolidity testing frameworksSolidity libraries such as OpenZeppelinOpen source order books such as SeaPort Benefits are an essential part of your total compensation for the work you do every day. Whether you’re single, in a growing family, or nearing retirement, eBay offers a variety of comprehensive and competitive benefit programs to meet your needs. Including maternal & paternal leave, paid sabbatical, and plans to help ensure your financial security today and in the years ahead because we know feeling financially secure during your working years and through retirement is important.Here at eBay, we love creating opportunities for others by connecting people from widely diverse backgrounds, perspectives, and geographies. So, being diverse and inclusive isn’t just something we strive for, it is who we are, and part of what we do each and every single day. We want to ensure that as an employee, you feel eBay is a place where, no matter who you are, you feel safe, included, and that you have the opportunity to bring your unique self to work. To learn about eBay’s Diversity & Inclusion click here: https://www.ebayinc.com/company/diversity-inclusion/#LI-DO1#LI-HybrideBay Inc. is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, sex, sexual orientation, gender identity, veteran status, and disability, or other legally protected status. If you are unable to submit an application because of incompatible assistive technology or a disability, please contact us at talent@ebay.com. We will make every effort to respond to your request for disability assistance as soon as possible. View our accessibility info to learn more about eBay's commitment to ensuring digital accessibility for people with disabilities. For more information see: EEO is the Law Poster and EEO is the Law Poster Supplement.Jobs posted with location as "Remote - United States (Excludes: HI, NM)" excludes residents of Hawaii and New Mexico. 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