System Administrator – Linux & Low-Latency Systems

Location

Bengaluru

Employment Type

Full-Time

Experience Required

3–8 Years

Education

BE/ – 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

Required Skills:

Linux Administration Low Latency Systems HFT Infrastructure Linux Kernel Tuning NUMA CPU Pinning Ubuntu RedHat CentOS TCP/IP Multicast BGP OSPF Cisco Nexus Bash Python Prometheus Grafana DPDK Mellanox Solarflare Kubernetes DevOps Production Support Performance Tuning