System Administrator HFT (Linux & Low-Latency Systems)

System Administrator - Linux & Low-Latency Systems Location Bengaluru Employment Type Full-Time Experience Required 3-8 Years Education BE/B.Tech - Computer Science, Information Technology, Electronics, or related field Preferred Certifications RHCE, RHCSA, LPIC, CCNA, CCNP Job Summary We are looking for a highly skilled System Administrator with strong expertise in Linux systems, networking, and low-latency infrastructure environments. The ideal candidate will be responsible for deploying, managing, monitoring, and optimizing mission-critical infrastructure with a focus on performance, reliability, and high availability. The role involves working closely with infrastructure, networking, and engineering teams to maintain ultra-low latency environments, troubleshoot complex production issues, and continuously improve system performance. Key Responsibilities Linux System Administration Deploy, configure, and maintain Linux servers across Ubuntu, Red Hat, and CentOS environments. Perform Linux system tuning including CPU pinning, NUMA optimization, IRQ affinity, huge pages configuration, and kernel parameter tuning. Manage OS-level scheduling policies, real-time priorities, and CPU isolation to improve system performance. Handle system hardening, patch management, firmware upgrades, and OS lifecycle management. Maintain infrastructure documentation, SOPs, and operational runbooks. Low-Latency Infrastructure Management Manage and optimize bare-metal Linux infrastructure for high-performance environments. Support infrastructure related to market data, order management, and execution systems. Monitor and optimize latency, jitter, and packet loss across the infrastructure stack. Work on high-speed network hardware and ultra-low latency networking environments. Support exchange connectivity and colocation infrastructure operations. Network & Data Center Operations Manage L2/L3 networking including VLANs, BGP, OSPF, multicast, and high-availability configurations. Configure and manage Cisco Nexus or similar data center switches. Coordinate with data center teams for rack management, cabling, power, and cooling activities. Ensure redundancy, failover readiness, and proactive infrastructure capacity planning. Monitoring & Automation Build and maintain monitoring and alerting systems using Prometheus and Grafana. Automate routine operational tasks using Bash and Python scripting. Perform infrastructure health checks, deployment automation, log management, and troubleshooting. Collaborate with engineering teams to resolve infrastructure bottlenecks and production incidents. Required Technical Skills Core Linux Ubuntu Red Hat CentOS Linux internals Kernel tuning CPU pinning NUMA optimization BIOS/hardware tuning Networking TCP/IP UDP Multicast VLANs BGP OSPF L2/L3 networking Low-Latency & Infrastructure High-speed networking (10/25/40/100GbE) Mellanox / NVIDIA NICs Solarflare NICs Cisco Nexus switches DPDK / OpenOnload exposure NVMe / high-performance storage systems Monitoring & Automation Bash scripting Python scripting Prometheus Grafana Data center operations Preferred Qualifications Experience working in low-latency, HFT, trading, financial services, or high-performance computing environments. Strong troubleshooting skills in mission-critical production infrastructure. Exposure to colocation environments and high-speed trading infrastructure is an added advantage. What We're Looking For Strong Linux administration and troubleshooting skills Excellent understanding of networking fundamentals Experience in performance tuning and system optimization Ability to work in fast-paced production environments Strong analytical and problem-solving capabilities Good communication and coordination skills System Administrator - Linux & Low-Latency Systems Location Bengaluru Employment Type Full-Time Experience Required 3-8 Years Education BE/B.Tech - Computer Science, Information Technology, Electronics, or related field Preferred Certifications RHCE, RHCSA, LPIC, CCNA, CCNP Job Summary We are looking for a highly skilled System Administrator with strong expertise in Linux systems, networking, and low-latency infrastructure environments. The ideal candidate will be responsible for deploying, managing, monitoring, and optimizing mission-critical infrastructure with a focus on performance, reliability, and high availability. The role involves working closely with infrastructure, networking, and engineering teams to maintain ultra-low latency environments, troubleshoot complex production issues, and continuously improve system performance. Key Responsibilities Linux System Administration Deploy, configure, and maintain Linux servers across Ubuntu, Red Hat, and CentOS environments. Perform Linux system tuning including CPU pinning, NUMA optimization, IRQ affinity, huge pages configuration, and kernel parameter tuning. Manage OS-level scheduling policies, real-time priori