Senior / Staff Engineer, DEX Trading System

<div data-page-id="AEW3d0Y2noLuIcxROuFubTLpsZd" data-docx-has-block-data="false"> <div data-page-id="AEW3d0Y2noLuIcxROuFubTLpsZd" data-docx-has-block-data="false"> <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"> <div data-page-id="AEW3d0Y2noLuIcxROuFubTLpsZd" data-docx-has-block-data="false"> <div data-page-id="AEW3d0Y2noLuIcxROuFubTLpsZd" data-docx-has-block-data="false"> <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"> <div data-page-id="AEW3d0Y2noLuIcxROuFubTLpsZd" data-docx-has-block-data="false"> <div data-page-id="AEW3d0Y2noLuIcxROuFubTLpsZd" data-docx-has-block-data="false"> <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"> <div data-page-id="AEW3d0Y2noLuIcxROuFubTLpsZd" data-docx-has-block-data="false"> <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"> <div data-page-id="AEW3d0Y2noLuIcxROuFubTLpsZd" data-docx-has-block-data="false"> <div data-page-id="AEW3d0Y2noLuIcxROuFubTLpsZd" data-docx-has-block-data="false"> <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"> <div data-page-id="AEW3d0Y2noLuIcxROuFubTLpsZd" data-docx-has-block-data="false"> <div data-page-id="AEW3d0Y2noLuIcxROuFubTLpsZd" data-docx-has-block-data="false"> <div>OKX will be prioritising applicants who have a current right to work in Singapore, and do not require OKX's sponsorship of a visa</div> <br> <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"> <div data-page-id="PNNZdiw4Yo1ZOmx8btbucw8qsLG" data-lark-html-role="root" data-docx-has-block-data="false"> <h2 class="heading-2 ace-line old-record-id-ARMWdtKDIowwlyxaSOuuzEqssIf"><strong>Who We Are</strong></h2> <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.</div> <div class="ace-line ace-line old-record-id-Cfb8dvi9voxFkWxhNcmuJX50sZb">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.</div> <div class="ace-line ace-line old-record-id-Cfb8dvi9voxFkWxhNcmuJX50sZb">Across our multiple offices globally, we are united by our core principles:&nbsp;<em>We Before Me</em>, <em>Do the Right Thing</em>, and <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> <div class="ace-line ace-line old-record-id-Cfb8dvi9voxFkWxhNcmuJX50sZb"> <div data-page-id="PNNZdiw4Yo1ZOmx8btbucw8qsLG" data-lark-html-role="root" data-docx-has-block-data="false"> <h2 class="heading-2 ace-line old-record-id-PiRwdXFmiomeQDxx0RUuDGJ1sag"><strong>About the Opportunity</strong></h2> <div class="ace-line ace-line old-record-id-NrSYd8kjeoNTrexRDNsuNpZOsMd"> <div data-lark-html-role="root"><span class="text-only" data-eleid="8">We are looking for a seasoned backend engineer to design, build, and scale the backend systems powering OKX’s DEX trading products.</span> <span class="text-only" data-eleid="11">You will own critical parts of the trading lifecycle—from quote discovery and order management to transaction submission, execution tracking, and reconciliation. Working closely with product, frontend, smart contract, and infrastructure teams, you will deliver secure, reliable trading experiences across multiple blockchain ecosystems.</span> <span class="text-only" data-eleid="14">This is a hands-on engineering role with meaningful architectural ownership and opportunities to grow into technical leadership.</span></div> </div> <div class="ace-line ace-line old-record-id-NQ1gdeOLNoEsm2xDroWukiwGs3g">&nbsp;</div> <div class="ace-line ace-line old-record-id-GEUbd7sWzobkyGxnNNAufQyQsXe">&nbsp;</div> <h2 class="heading-2 ace-line old-record-id-HytwdMMd1o5PQtxqi9QudDSMsWV"><strong>What You’ll Be Doing</strong><strong>&nbsp;</strong></h2> <ul class="list-bullet1"> <li class="ace-line ace-line old-record-id-GkWsdUpKpouMsxxrbMluoheLsQc" data-list="bullet"> <div><span class="text-only" data-eleid="22">Design and develop backend services for quote aggregation, order management, transaction orchestration, and execution tracking.</span></div> </li> <li class="ace-line ace-line old-record-id-GkWsdUpKpouMsxxrbMluoheLsQc" data-list="bullet"> <div><span class="text-only" data-eleid="24">Build reliable integrations with DEX protocols, liquidity sources, blockchain RPC providers, and indexing services.</span> <span class="text-only" data-eleid="26">Define clear order and transaction state models, with robust handling of retries, duplicate requests, partial failures, and recovery.</span></div> </li> <li class="ace-line ace-line old-record-id-UkHxdmdcYotPMbxS4CUuUigns5s" data-list="bullet"> <div><span class="text-only" data-eleid="31">Ensure trading services remain reliable under high concurrency, traffic spikes, and degraded external dependencies.</span></div> </li> <li class="ace-line ace-line old-record-id-UkHxdmdcYotPMbxS4CUuUigns5s" data-list="bullet"> <div><span class="text-only" data-eleid="33">Implement appropriate rate limiting, concurrency controls, resource isolation, and graceful degradation.</span></div> </li> <li class="ace-line ace-line old-record-id-UkHxdmdcYotPMbxS4CUuUigns5s" data-list="bullet"> <div><span class="text-only" data-eleid="35">Optimize database access, transaction boundaries, caching, and asynchronous processing.</span> <span class="text-only" data-eleid="37">Establish monitoring, alerting, load testing, and incident-response practices for critical trading flows.</span></div> </li> <li class="ace-line ace-line old-record-id-WEUFd1hvcohl2KxgQFvukeJfsj8" data-list="bullet"> <div>&nbsp;<span class="text-only" data-eleid="42">Support trading workflows across multiple blockchain ecosystems.</span> <span class="text-only" data-eleid="44">Handle transaction submission, confirmation tracking, failed or dropped transactions, and chain reorganizations.</span></div> </li> <li class="ace-line ace-line old-record-id-WEUFd1hvcohl2KxgQFvukeJfsj8" data-list="bullet"> <div><span class="text-only" data-eleid="46">Build data synchronization and reconciliation mechanisms to maintain consistency between backend records and on-chain execution.</span></div> </li> <li class="ace-line ace-line old-record-id-WEUFd1hvcohl2KxgQFvukeJfsj8" data-list="bullet"> <div data-lark-html-role="root"><span class="text-only" data-eleid="51">Translate product requirements into practical technical designs and production-ready services.</span></div> </li> <li class="ace-line ace-line old-record-id-WEUFd1hvcohl2KxgQFvukeJfsj8" data-list="bullet"> <div data-lark-html-role="root"><span class="text-only" data-eleid="53">Own features through implementation, testing, rollout, and post-launch operation.</span>&nbsp;</div> </li> </ul> <div class="ace-line ace-line old-record-id-Gy4ydICWpol34Hxzjdhu4zdVshg">&nbsp;</div> <h2 class="heading-2 ace-line old-record-id-ZvAmdvgIGoKyiHxjBTiu68Kcs9d"><strong>What We Look For In You </strong></h2> <ul class="list-bullet1"> <li class="ace-line ace-line old-record-id-F7Q5dSyFPonFgJx4HDKu09ObsMh" data-list="bullet"> <div> <div data-lark-html-role="root"><span class="text-only" data-eleid="71">5+ years of professional backend engineering experience, including ownership of production systems.</span></div> </div> </li> <li class="ace-line ace-line old-record-id-X2QpdbNA3okEKcxYKY3ufqOXsQh" data-list="bullet"> <div><span class="text-only" data-eleid="73">Strong proficiency in Java and its backend ecosystem.</span> <span class="text-only" data-eleid="75">Solid understanding of concurrency, distributed systems, relational databases, caching, and messaging systems.</span>&nbsp;</div> </li> <li class="ace-line ace-line old-record-id-BUc6dfFyioKLJyxdlHGudKExsjg" data-list="bullet"> <div>E<span class="text-only" data-eleid="77">xperience building high-availability services and diagnosing performance or reliability issues in production.</span>&nbsp;</div> </li> <li class="ace-line ace-line old-record-id-Xo0VdixCRoUklCxHTOXu6JBus0b" data-list="bullet"> <div>&nbsp;<span class="text-only" data-eleid="79">Understanding of blockchain transactions, smart contract interactions, and common DeFi trading mechanisms.</span></div> </li> <li class="ace-line ace-line old-record-id-Xo0VdixCRoUklCxHTOXu6JBus0b" data-list="bullet"> <div><span class="text-only" data-eleid="81">Ability to independently drive a feature from technical design through production deployment.</span> <span class="text-only" data-eleid="83">Strong ownership, sound engineering judgment, and effective cross-functional communication.</span> &nbsp;</div> </li> </ul> <div class="ace-line ace-line old-record-id-UhJ9dmqAXoYf0Rxmj2MuiHGesRc">&nbsp;&nbsp;</div> <h2 class="heading-2 ace-line old-record-id-CmqsdZ2GTo6Z9VxuHx4ugzRRsm3"><strong>Perks &amp;<span style="font-size: 18pt;"> Benefits </span></strong></h2> <ul class="list-bullet1"> <li class="ace-line ace-line old-record-id-XvQudJ7z0ouSnuxOibouMkKzsCc" data-list="bullet"> <div>Competitive total compensation package</div> </li> <li class="ace-line ace-line old-record-id-GAzBdJXxLo291PxrthXurPeds4g" data-list="bullet"> <div>L&amp;D programs and Education subsidy for employees' growth and development</div> </li> <li class="ace-line ace-line old-record-id-CKPxdgHeoosenzxCpV2uV32ysz0" data-list="bullet"> <div>Various team building programs and company events</div> </li> <li class="ace-line ace-line old-record-id-XjPSdIa92oGeLox9Qo9uejVEs4c" data-list="bullet"> <div>Wellness and meal allowances&nbsp;</div> </li> <li class="ace-line ace-line old-record-id-CS34dAJCDoMDHxx95pZu43yjsxB" data-list="bullet"> <div>Comprehensive healthcare schemes for employees and dependants&nbsp;</div> </li> <li class="ace-line ace-line old-record-id-Uqtsd4bN8oaHt7xyPlYuxmfcsob" data-list="bullet"> <div>More that we love to tell you along the process!</div> </li> </ul> <div class="ace-line ace-line old-record-id-JGIsdeznCo2qpfxJAqkuViMfsHS">&nbsp;</div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div><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>