Miller Maxwell Ltd
Linux Systems Engineer
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Job Title
In a front-office trading environment, milliseconds matter — and the systems you build will directly influence PnL. We’re looking for a high-performance Linux Systems Engineer to join our trading technology client, working at the heart of a real-time execution platform. You’ll engineer, optimise, and support the Linux infrastructure that powers a global trading strategies, ensuring ultra-low latency, high throughput, and absolute reliability.
What You’ll Do
- Engineer, tune, and operate Linux-based trading infrastructure supporting live front-office trading.
- Troubleshoot complex OS, hardware, and network issues across a latency-sensitive production environment.
- Automate provisioning, configuration, and systems management using Python, Bash, and modern config-management tools.
- Benchmark, profile, and optimise system performance — from kernel parameters to NIC tuning — to reduce latency and increase stability.
- Deploy, test, and maintain mission-critical applications used directly by traders and quants.
- Manage core services (DNS, NTP/PTP, DHCP, LDAP, NFS) across on-prem and cloud environments.
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What You Bring
- Deep hands-on experience with Linux systems engineering in high-availability or trading environments.
- Strong troubleshooting skills across OS, hardware, networking, and performance bottlenecks.
- Proficiency in Python and shell scripting for automation and tooling.
- Experience with configuration management (Ansible, Puppet, SaltStack).
- Understanding of networking fundamentals: TCP/UDP, multicast, routing, DNS.
- Ability to operate calmly and decisively in production-critical, time-sensitive situations.
- Bonus: experience with low-latency systems, kernel tuning, FPGA-adjacent workflows, or exchange connectivity.
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Why Join
You’ll work directly with traders, quants, and core engineering teams, shaping the systems that drive real-time decision-making and execution. This is a role where your work has immediate impact — improving latency, stability, and throughput translates directly into trading performance.
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