Linux Systems Engineer | World-Class Hedge Fund Location: Paris Our client is a world‑class hedge fund, recognised for its elite technology organisation and scientific, data‑driven culture. They are now seeking a Linux Systems Engineer to join a global team operating at the core of a large‑scale, mission‑critical Linux environment powering cutting‑edge quantitative research and high‑performance trading. This is an opportunity to immerse yourself in one of the industry's most advanced Linux estates-hands‑on across high‑availability platforms, large compute clusters, and automation tooling-while partnering with exceptional engineers to elevate observability, resilience, and platform automation. As a key member of the global infrastructure support organisation, you will help support, scale, and evolve the firm's next‑generation Linux trading and research platforms. Key Responsibilities Administer, support, and optimise Linux‑based trading and research platforms within a high‑availability, ultra‑low‑latency production environment. Deploy new infrastructure and manage end‑to‑end server lifecycle processes, from bare‑metal installation through to full OS provisioning. Collaborate with engineering teams to enhance automation, monitoring, and observability, driving efficiency, reliability, and long‑term scalability. Troubleshoot complex production incidents, conduct deep‑dive root‑cause analysis, and implement enduring stability improvements. Produce and maintain high‑quality documentation while contributing to process refinement and knowledge sharing across the global infrastructure group. Participate in an on‑call rotation and provide occasional out‑of‑hours (primarily remote) support. Key Requirements 4 years' experience in infrastructure, systems engineering, or Linux platform support within high‑availability, mission‑critical environments. Strong hands‑on Linux administration experience with Red Hat, CentOS, or Rocky Linux. Proven experience delivering full server lifecycle builds, including hardware installation, OS deployment, and configuration. Solid understanding of AMD and Intel server hardware, with the ability to troubleshoot at both system and component level. Practical experience with infrastructure automation tools (e.g., Ansible). Scripting proficiency in Python and Bash for automation, tooling, and operational workflows.