Senior Java Engineer, Wallet Smart Account Team

<div class="ace-line ace-line old-record-id-doxuseysYUio6Qia64JLLAwE7dh"> <div data-page-id="doxusokjWsaOkSCIjzixAfRM3sd" data-docx-has-block-data="false"> <div class="ace-line ace-line old-record-id-doxusaUYeCmu82WSkkm5KDd00db"> <h3><strong>Who We Are</strong></h3> </div> <div class="ace-line ace-line old-record-id-doxusaUYeCmu82WSkkm5KDd00db"><span class="text-only" data-eleid="3">At OKX, we believe that the future will be reshaped by Crypto, ultimately contributing to every individual's freedom. OKX began as a crypto exchange giving millions of people&nbsp;</span> <div data-page-id="Kpucdjv7JoAcSZxSf7PuRl5Yscb" data-lark-html-role="root" data-docx-has-block-data="false"> <div class="ace-line ace-line old-record-id-Cfb8dvi9voxFkWxhNcmuJX50sZb">At OKX, we believe that the future will be reshaped by crypto, and ultimately contribute to every individual's freedom. OKX is a leading crypto exchange, and the developer of OKX Wallet, giving millions access to crypto trading and decentralized crypto applications (dApps). OKX is also a trusted brand by hundreds of large institutions seeking access to crypto markets. We are safe and reliable, backed by our Proof of Reserves. Across our multiple offices globally, we are united by our core principles:&nbsp;<em>We Before Me</em>,&nbsp;<em>Do the Right Thing</em>, and&nbsp;<em>Get Things Done</em>. These shared values drive our culture, shape our processes, and foster a friendly, rewarding, and diverse environment for every OK-er. OKX is part of OKG, a group that brings the value of Blockchain to users around the world, through our leading products OKX, OKX Wallet, OKLink and more.</div> </div> </div> <div class="ace-line ace-line old-record-id-doxusEG0eQM4WECkUAP2JN4LOXb">&nbsp;</div> </div> </div> <h3><strong>Responsibilities</strong></h3> <ul> <li> <p data-path-to-node="8,0,0"><strong data-path-to-node="8,0,0" data-index-in-node="0">System Architecture:</strong> Lead the design and implementation of highly scalable, secure backend services for OKX Wallet and payment infrastructure.</p> </li> <li> <p data-path-to-node="8,1,0"><strong data-path-to-node="8,1,0" data-index-in-node="0">On-Chain Integration:</strong> Build and maintain robust interfaces with the EVM ecosystem and emerging high-performance chains (Solana, Sui, Aptos).</p> </li> <li> <p data-path-to-node="8,2,0"><strong data-path-to-node="8,2,0" data-index-in-node="0">Payment Engineering:</strong> Develop secure and efficient transaction processing systems, merging traditional payment reliability with blockchain transparency.</p> </li> <li> <p data-path-to-node="8,3,0"><strong data-path-to-node="8,3,0" data-index-in-node="0">Problem Solving:</strong> Act as a technical pillar for the team, identifying and resolving complex production issues, performance bottlenecks, and security vulnerabilities.</p> </li> <li> <p data-path-to-node="8,4,0"><strong data-path-to-node="8,4,0" data-index-in-node="0">Innovation:</strong> Drive the adoption of Account Abstraction (AA) and other cutting-edge EIPs to enhance the user experience of decentralized finance.</p> </li> </ul> <h3><strong>Requirements</strong></h3> <ul> <li> <p data-path-to-node="10,0,0"><strong data-path-to-node="10,0,0" data-index-in-node="0">Senior Engineering Background:</strong> Extensive experience in Java development with a proven track record of managing high-traffic, mission-critical production environments.</p> </li> <li> <p data-path-to-node="10,1,0"><strong data-path-to-node="10,1,0" data-index-in-node="0">Web3 Native:</strong> Deep expertise in the <strong data-path-to-node="10,1,0" data-index-in-node="35">EVM ecosystem</strong>. You should be comfortable with on-chain data structures, transaction lifecycles, and smart contract interactions.</p> </li> <li> <p data-path-to-node="10,2,0"><strong data-path-to-node="10,2,0" data-index-in-node="0">Multi-Stack Proficiency:</strong> While Java is our core, familiarity with <strong data-path-to-node="10,2,0" data-index-in-node="66">Go</strong> or <strong data-path-to-node="10,2,0" data-index-in-node="72">Rust</strong> is highly preferred to support our multi-language infrastructure.</p> </li> <li> <p data-path-to-node="10,3,0"><strong data-path-to-node="10,3,0" data-index-in-node="0">Crypto Passion:</strong> You are a "Chain Surfer." You stay updated on the latest DeFi trends, use dApps personally, and have an unshakable belief in the future of the industry.</p> </li> <li> <p data-path-to-node="10,4,0"><strong data-path-to-node="10,4,0" data-index-in-node="0">Soft Skills:</strong> High energy, proactive ownership ("Get Things Done"), and the ability to thrive in a fast-paced, evolving environment.</p> </li> </ul> <h3><strong>Nice-to-Haves</strong></h3> <ul> <li> <p data-path-to-node="12,0,0"><strong data-path-to-node="12,0,0" data-index-in-node="0">Advanced Wallet Tech:</strong> Deep understanding of <strong data-path-to-node="12,0,0" data-index-in-node="44">Account Abstraction (ERC-4337)</strong>, EIP-7702, or MPC/TSS wallet architectures.</p> </li> <li> <p data-path-to-node="12,1,0"><strong data-path-to-node="12,1,0" data-index-in-node="0">Multi-Chain Expertise:</strong> Hands-on experience with non-EVM chains like <strong data-path-to-node="12,1,0" data-index-in-node="68">Solana, Sui, or Aptos</strong>.</p> </li> <li> <p data-path-to-node="12,2,0"><strong data-path-to-node="12,2,0" data-index-in-node="0">Payment Industry Experience:</strong> Prior background in traditional FinTech, clearing/settlement systems, or payment gateways.</p> </li> <li> <p data-path-to-node="12,3,0"><strong data-path-to-node="12,3,0" data-index-in-node="0">Polyglot Developer:</strong> Ability to contribute to our Rust or Go-based microservices.</p> </li> </ul> <div class="ace-line ace-line old-record-id-doxusO8GYe4EYEqaQaI7XJnKnwh"> <h3><strong>Perks &amp; Benefits </strong></h3> </div> <ul class="list-bullet1"> <li class="ace-line ace-line old-record-id-doxusKGiOw42SEGIke2WCPzrE4e" data-list="bullet"> <div>Competitive total compensation</div> </li> <li class="ace-line ace-line old-record-id-doxusUCwKcEqi0MKIcNLFs0o2yg" data-list="bullet"> <div>Comprehensive insurance coverage for employees and their dependants</div> </li> <li class="ace-line ace-line old-record-id-doxusuEAisQ8W6U28cP6jzyr5Ie" data-list="bullet"> <div>More that we love to tell you along the process!<br><br></div> </li> </ul> <p><span class="text-only">Disclaimer: Please note that Hong Kong is a group-level service hub, and&nbsp;</span><span class="text-only text-with-abbreviation text-with-abbreviation-bottomline">OKX</span><span class="text-only">&nbsp;does not carry on a business of operating a virtual asset trading platform in Hong Kong.</span></p><div class="content-conclusion"><div data-lark-html-role="root"><span class="text-only" data-eleid="18"><span class="text-only"><span class="text-only" data-eleid="6">Notice:<br></span></span></span> <div data-lark-html-role="root"><span class="text-only" data-eleid="26"><span class="text-only">All official </span><span class="text-only text-with-abbreviation text-with-abbreviation-bottomline">OKX</span><span class="text-only"> vacancies are published on this website.</span></span> <span class="text-only" data-eleid="28"><span class="text-only">While roles may appear on selected third-party platforms from time to time, information on other sites may be inaccurate or outdated. </span></span><strong><span class="text-only" data-eleid="29"><span class="text-only">If in doubt, please apply directly through our official careers website.</span></span></strong></div> </div> <div data-lark-html-role="root"><span class="text-only" data-eleid="18"><span class="text-only">Information collected and processed as part of the recruitment process of any job application you choose to submit is subject to&nbsp;</span><span class="text-only text-with-abbreviation text-with-abbreviation-bottomline">OKX</span><span class="text-only">'s </span></span><a class="link rich-text-anchor __anchor-intercept-flag__ text-content-link" href="https://www.okx.com/en-eu/help/okx-candidate-privacy-notice" target="_blank" data-eleid="19" data-lark-is-custom="true" data-lark-link="true">Candidate Privacy Notice</a><span class="text-only" data-eleid="20"><span class="text-only">.</span></span></div></div>