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.Skills Required
Python, Bash, Prometheus, Grafana, Elk Stack, Fix Protocol