Linux Systems Engineer

<p>Our Linux engineering team ensures that our critical trading servers and infrastructure operate efficiently and reliably across the globe. In a highly customized, bare-metal environment powered by proprietary tools and technology, you’ll help design and implement cutting-edge solutions that enable scalable technological evolution while maintaining peak performance together with speed and precision.</p> <p><strong>What you'll do</strong></p> <ul> <li>Designing, deploying, and managing the lifecycle of a large-scale fleet of Linux servers across multiple data centers, ensuring reliability, performance, and scalability.</li> <li>Architecting, building, and maintaining systems that drive efficiency and support Optiver’s evolving technology stack.</li> <li>Ensuring system reliability by swiftly resolving incidents and optimizing performance to meet trading demands, even during extreme market conditions.</li> <li>Researching and implementing new technologies or building enhanced in-house solutions to improve performance and system stability.</li> <li>Bridging the gap between hardware and software to ensure seamless interaction and integration.</li> <li>Optimizing system and kernel performance, including CPU affinity, NUMA balancing, HugePages, IRQ tuning, and other low-level configurations.</li> <li>Developing and maintaining automation tools using Python to enhance system efficiency.</li> <li>Monitoring system health and performance using observability tools such as Prometheus, Grafana, and Alertmanager.</li> <li>Managing system provisioning and infrastructure deployment using Infrastructure-as-Code tools like Ansible and/or Terraform.</li> <li>Joining our rotating support and on-call roster to facilitate global trading operations.</li> </ul> <p><strong>Who you are</strong></p> <p><strong></strong></p> <ul class="ak-ul" data-indent-level="1"> <li> <p data-renderer-start-pos="8500">Experience in Linux engineering, debugging, administration, and OS system provisioning</p> </li> <li> <p data-renderer-start-pos="8500">A solid understanding of networking fundamentals, including TCP/IP, DNS, TCP/UDP/multicast, and packet analysis.</p> </li> <li> <p data-renderer-start-pos="8706">Hands-on experience with system/network tools such as&nbsp;<code class="_ca0qyh40 _u5f3m5ip _n3tdyh40 _19bvm5ip _2rkofajl _11c81u0j _1reo1wug _18m91wug _1dqoglyw _1e0c1nu9 _bfhk187e _16d9qvcn _syazi7uo _vwz41kw7 _1i4q1hna _o5721jtm" data-renderer-mark="true">EBPF</code>,&nbsp;<code class="_ca0qyh40 _u5f3m5ip _n3tdyh40 _19bvm5ip _2rkofajl _11c81u0j _1reo1wug _18m91wug _1dqoglyw _1e0c1nu9 _bfhk187e _16d9qvcn _syazi7uo _vwz41kw7 _1i4q1hna _o5721jtm" data-renderer-mark="true">tcpdump</code>,&nbsp;<code class="_ca0qyh40 _u5f3m5ip _n3tdyh40 _19bvm5ip _2rkofajl _11c81u0j _1reo1wug _18m91wug _1dqoglyw _1e0c1nu9 _bfhk187e _16d9qvcn _syazi7uo _vwz41kw7 _1i4q1hna _o5721jtm" data-renderer-mark="true">strace</code>,&nbsp;<code class="_ca0qyh40 _u5f3m5ip _n3tdyh40 _19bvm5ip _2rkofajl _11c81u0j _1reo1wug _18m91wug _1dqoglyw _1e0c1nu9 _bfhk187e _16d9qvcn _syazi7uo _vwz41kw7 _1i4q1hna _o5721jtm" data-renderer-mark="true">ntp/ptp</code>,&nbsp;<code class="_ca0qyh40 _u5f3m5ip _n3tdyh40 _19bvm5ip _2rkofajl _11c81u0j _1reo1wug _18m91wug _1dqoglyw _1e0c1nu9 _bfhk187e _16d9qvcn _syazi7uo _vwz41kw7 _1i4q1hna _o5721jtm" data-renderer-mark="true">lsof</code>,&nbsp;<code class="_ca0qyh40 _u5f3m5ip _n3tdyh40 _19bvm5ip _2rkofajl _11c81u0j _1reo1wug _18m91wug _1dqoglyw _1e0c1nu9 _bfhk187e _16d9qvcn _syazi7uo _vwz41kw7 _1i4q1hna _o5721jtm" data-renderer-mark="true">nc</code>.</p> </li> <li> <p data-renderer-start-pos="8805">Experience with performance tuning at both the kernel and hardware level, including CPU pinning, cache optimizations, and BIOS/UEFI tuning.</p> </li> <li> <p data-renderer-start-pos="8948">Experience with Linux security hardening techniques.</p> </li> <li> <p data-renderer-start-pos="9004">Experience managing SAN storages.</p> </li> <li> <p data-renderer-start-pos="9041">Familiarity with CI/CD pipelines, version control systems (Git), and PR-based workflows.</p> </li> <li> <p data-renderer-start-pos="9133">Strong experience with monitoring and alerting tools like Elastic, Prometheus, Grafana, and Alert Manager.</p> </li> <li> <p data-renderer-start-pos="9243">Proficiency in Python for automating operational tasks and system administration.</p> </li> <li> <p data-renderer-start-pos="9328">Ability to manage large projects, work collaboratively in a team, and communicate effectively to drive technical improvements.</p> </li> <li> <p data-renderer-start-pos="9458">Willingness to learn new technologies, navigate frequent change, and contribute to a high-performance engineering environment.</p> </li> </ul> <p><strong></strong></p> <p><em>No prior trading or financial experience is needed – our onboarding program will kick-start your career at Optiver and support you in gaining all the relevant knowledge about our business.</em></p> <p><strong>Who we are</strong><br>At Optiver, our mission is to constantly improve the market by injecting liquidity, providing accurate pricing, increasing transparency and acting as a stabilizing force no matter the market conditions. With a focus on continuous improvement, we participate in the safeguarding of healthy and efficient markets for everyone who participates. As one of the largest market making institutions, we are a trusted partner of 70+ exchanges across the globe.</p> <p>&nbsp;</p> <p><strong>What you'll get</strong><br>You’ll join a culture of collaboration and excellence, where you’ll be surrounded by curious thinkers and creative problem solvers. Motivated by a passion for continuous improvement, you’ll thrive in a supportive, high-performing environment alongside talented colleagues, working collectively to tackle the toughest problems in the financial markets.<br><br>In addition, you’ll receive:</p> <ul> <li>A performance-based bonus structure, enabling all of our employees to benefit from our global profit pool.</li> <li>The opportunity to work alongside best-in-class professionals from over 50 different countries.</li> <li>25 paid vacation days in your first year, increasing to 30 from your second year onwards.</li> <li>Training opportunities, discounts on health insurance, and fully paid first-class commuting expenses.</li> <li>Extensive office perks, including breakfast, lunch and dinner, world-class barista coffee, in-house physio and chair massages, organized sports and leisure activities, and Friday afternoon drinks.</li> <li>Training and continuous learning opportunities, including access to conferences and tech events.<br><br></li> </ul> <p><strong>How to apply<br></strong>Apply directly via the form below. If you have any questions feel free to contact our Recruitment team via our <a href="https://optiver.com/contact-eu-recruitment/">recruitment inquiry form</a>.<br><br>Please note:</p> <ul> <li>We do not require any assistance from third-parties including agencies in the recruitment of this role</li> <li>We cannot accept applications via email<br><br></li> </ul> <p><strong>Diversity statement<br></strong>Optiver is committed to <a href="https://optiver.com/diversity-statement/?_gl=1*bh82o8*_up*MQ..&amp;gclid=EAIaIQobChMItNH9v-THiQMVyJZQBh1Kbw3YEAAYASABEgI0z_D_BwE">diversity and inclusion.</a><strong><br></strong></p> <p>&nbsp;</p> <p>&nbsp;</p>