The Global Low Latency UNIX Support Team is seeking an experienced Linux Systems Administrator to support a global low-latency infrastructure spanning more than 2,300 servers across 30+ exchange colocation sites and core data centers. You will have deep expertise in Linux environments, including SLES and RHEL, along with strong knowledge of enterprise server hardware and infrastructure. This role is responsible for all stages of the hardware lifecycle, including planning, deployment, activation, product ionization, and vendor management. The position provides support to critical trading and market-facing platforms across multiple business lines, including Foreign Exchange, Market Data, Rates, Equities, Commodities, Derivatives, and Algorithmic Trading. We are looking for a collaborative problem solver with strong communication skills who thrives in a fast-paced, mission-critical environment., * Provide dedicated support for Change the Bank and Run the Bank activities across the Global Low Latency UNIX infrastructure, including rapid response to production incidents

• Plan, deploy, activate, productionize, upgrade, and maintain low-latency server hardware and operating systems across exchange colocation sites and core data centers
• Perform advanced Linux and latency-specific tuning, including CPU isolation, real-time threads, interrupt affinity, network interface card buffer optimization, and kernel-level enhancements
• Partner with application and project delivery teams to align environments with the technology roadmap, including operating system, hardware, and third-party software upgrades
• Design, test, and validate engineering releases and RPM packages for applications requiring ultra-low-latency performance
• Drive standardization and automation while coordinating with UNIX engineering teams and third-party vendors to assess and implement new technologies

How You’ll Lead

• Act as a senior UNIX subject matter expert and trusted advisor to technology and business stakeholders supporting global trading platforms
• Lead technical decision-making during complex incidents, infrastructure changes, and performance investigations across multiple regions
• Build strong partnerships with application teams, project delivery teams, UNIX engineering, network and storage teams, and external vendors

• Extensive experience administering enterprise Linux environments, particularly SLES and RHEL, including upgrades, patching, configuration, performance management, troubleshooting, and capacity planning
• Deep knowledge of low-latency systems engineering, including Linux kernel tuning, latency and jitter reduction, BIOS tuning, real-time kernels, kernel bypass technologies, CPU and I/O architecture, InfiniBand, and Ethernet hardware
• Strong expertise in TCP/IP networking, routing, network topology, firewalled environments, Ethernet bonding, PCIe technologies, and protocols including NFS, NIS, DNS, DHCP, UDP, IGMP, NTP, and SSH
• Experience with enterprise server hardware, including HP ProLiant DL380/580 and Synergy platforms, as well as storage technologies such as EMC and NetApp
• Experience using Perl, Shell, and/or Ansible to automate infrastructure administration and operational tasks
• Proven ability to leverage AI tools to enhance productivity and optimize workflows to solve business problems, while applying critical judgment to ensure the responsible and ethical use of data and AI outputs

Skills That Will Help You Excel

• Experience with VMware and Google Cloud Platform
• Excellent analytical and forensic troubleshooting skills in high-pressure, multitasking environments
• Clear written and verbal communication skills, with the ability to explain complex technical issues to stakeholders at all levels
• Experience supporting globally distributed, follow-the-sun production environments and working during scheduled change windows
• A collaborative, proactive approach to evaluating new technologies and improving infrastructure performance, resilience, and automation

• A diverse and inclusive environment that embraces change, innovation, and collaboration
• A hybrid working model, allowing for in-office / work from home flexibility, generous vacation, personal and volunteer days
• Employee Resource Groups support an inclusive workplace for everyone and promote community engagement
• Competitive compensation packages including health and wellbeing benefits, retirement savings plans, parental leave, and family building benefits
• Educational resources, matching gift and volunteer programs

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