L3 Linux Administrator (Low-Latency Trading Systems)

Job description:About the Role: We are looking for an experienced L3 Linux Administrator to manage and optimize our low-latency trading infrastructure. The ideal candidate will have deep expertise in Linux system administration, performance tuning, and troubleshooting within high-frequency trading environments.Key Responsibilities: System Optimization: Configure and tune Linux systems for ultra-low latency, including kernel parameter adjustments, CPU isolation, NUMA optimizations, and persistent huge pages.Performance Monitoring Troubleshooting: Diagnose and resolve issues like high CPU utilization, network packet drops, disk I/O bottlenecks, and performance degradation using advanced tools ( perf , dropwatch , ethtool , etc.).Network Configuration: Optimize network stack settings for trading environments and configure multicast networking for market data feeds.Security Management: Secure FIX protocol communications and ensure compliance with industry standards through encryption and secure tunneling techniques.High Availability (HA): Design and implement HA solutions for trading applications using tools like Pacemaker or Corosync.Time Synchronization: Ensure precise time synchronization across trading servers using NTP/PTP configurations.Kernel Bypass Technologies: Leverage technologies such as DPDK or Solarflare OpenOnload to enhance network performance.Required Skills Expertise: Advanced knowledge of Linux system administration (RHEL/CentOS preferred).Experience in low-latency system design and performance tuning.Proficiency in troubleshooting tools (perf, strace, bpftrace).Expertise in FIX protocol security and troubleshooting FIX engine connectivity issues.Strong understanding of network stack optimizations (XPS/RPS tuning, IRQ balancing).Familiarity with kernel bypass technologies like DPDK or Solar flare Open Onload.Preferred: Experience in financial services or high-frequency trading environments.Knowledge of monitoring tools like Prometheus, Grafana, or ELK Stack.Proficiency in scripting languages such as Python or Bash.Candidates with a 0-15 day notice period or those who can join immediately will be given preference. Job description:About the Role: We are looking for an experienced L3 Linux Administrator to manage and optimize our low-latency trading infrastructure. The ideal candidate will have deep expertise in Linux system administration, performance tuning, and troubleshooting within high-frequency trading environments.Key Responsibilities: System Optimization: Configure and tune Linux systems for ultra-low latency, including kernel parameter adjustments, CPU isolation, NUMA optimizations, and persistent huge pages.Performance Monitoring Troubleshooting: Diagnose and resolve issues like high CPU utilization, network packet drops, disk I/O bottlenecks, and performance degradation using advanced tools ( perf , dropwatch , ethtool , etc.).Network Configuration: Optimize network stack settings for trading environments and configure multicast networking for market data feeds.Security Management: Secure FIX protocol communications and ensure compliance with industry standards through encryption and secure tunneling techniques.High Availability (HA): Design and implement HA solutions for trading applications using tools like Pacemaker or Corosync.Time Synchronization: Ensure precise time synchronization across trading servers using NTP/PTP configurations.Kernel Bypass Technologies: Leverage technologies such as DPDK or Solarflare OpenOnload to enhance network performance.Required Skills Expertise: Advanced knowledge of Linux system administration (RHEL/CentOS preferred).Experience in low-latency system design and performance tuning.Proficiency in troubleshooting tools (perf, strace, bpftrace).Expertise in FIX protocol security and troubleshooting FIX engine connectivity issues.Strong understanding of network stack optimizations (XPS/RPS tuning, IRQ balancing).Familiarity with kernel bypass technologies like DPDK or Solar flare Open Onload.Preferred: Experience in financial services or high-frequency trading environments.Knowledge of monitoring tools like Prometheus, Grafana, or ELK Stack.Proficiency in scripting languages such as Python or Bash.Candidates with a 0-15 day notice period or those who can join immediately will be given preference.