Linux System Engineer

A leading high-frequency trading firm is seeking a Linux Systems Engineer to manage and evolve a high-performance, low-latency infrastructure estate. This role sits within a core infrastructure team responsible for the stability, performance, and scalability of trading-critical systems.

You’ll be working in an environment where microseconds matter, supporting a diverse fleet of Linux servers underpinning trading, research, and market data platforms.

Responsibilities

• Manage and maintain a large-scale Linux server environment across trading and research systems
• Support and optimise low-latency infrastructure, ensuring high availability and performance
• Own and improve core services including DNS, networking, and system-level tooling
• Automate operational workflows using Python and other scripting languages
• Troubleshoot complex system and performance issues across hardware, OS, and network layers
• Collaborate with network engineers, SREs, and trading teams to enhance system reliability

Requirements

• Strong experience administering Linux systems in a performance-critical environment
• Solid understanding of low-latency infrastructure and tuning (CPU, memory, kernel, networking)
• Experience managing DNS and core networking services
• Proficiency in Python for automation and tooling
• Strong troubleshooting skills across systems and infrastructure layers
• Experience in trading, finance, or similarly latency-sensitive environments is highly desirable

This is an opportunity to work on cutting-edge infrastructure in a fast-paced trading environment where engineering quality directly impacts performance.

Apply now for a confidential discussion.