Linux Engineer - build/tune some of the world's fastest trading systems

This range is provided by Saragossa. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Overview

This is not a Sys Admin role. This role is for elite engineers with strong coding ability, that are embedded within the Linux ecosystem.

Responsibilities

• Build and fine-tune the Linux OS that underpins some of the world’s fastest trading systems.
• Focus on ultra-low latency, bare metal performance, and kernel-level problem solving, alongside writing and debugging C++, Python, or Golang code.
• Your work will span memory management, CPU scheduling, kernel tuning, and virtualization using KVM.
• Help manage and optimise on‑prem Kubernetes environments supporting critical trading infrastructure.
• Collaborate with quants and custom hardware teams (including GPUs and a proprietary network stack) to extract every microsecond of performance.
• Work on complex, open-ended problems that may take weeks or months to resolve.

Details

• Location: London – fully onsite
• Base pay range: up to £250k base + bonuses. The budget is open to attract the best engineers, and compensation includes a generous base salary + guaranteed bonus (roughly a 60/40 split).
• Salary is based on skills and experience.

Seniority

• Mid-Senior level

Employment type

• Full-time

Job function

• Information Technology

Industries

• Capital Markets, Investment Management, and Securities and Commodity Exchanges