L3 Linux Administrator (Low-Latency Trading Systems)

• 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.

• 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 Solarflare OpenOnload.

• 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.
  

Required Skills