Linux Systems Administrator & Infrastructure Engineer

Senior Linux Infrastructure Engineer - Systems & PlatformLondon - Hybrid200,000-350,000 totalQuant Capital is partnered with a global systematic trading firm seeking a Senior Linux Infrastructure Engineer to join a high-impact platform engineering function. The team owns core infrastructure across datacentres, cloud environments and global offices, supporting both investment activity and large-scale engineering workloads.This role suits a deeply technical engineer who understands large distributed systems, low-level Linux internals, and the realities of running secure, high-availability infrastructure at scale.What you’ll do• Design, operate and improve global Linux-based infrastructure• Engineer secure, reliable systems across datacentres, cloud and hybrid environments• Contribute to networking, operating systems, platform security and core services• Work on configuration management, automation and CI/CD pipelines• Partner with engineering and research teams on platform design and integration• Troubleshoot complex issues using advanced diagnostic tools across host and network layersWhat you’ll need• 10+ years in Linux systems engineering within large-scale or mission-critical environments• Strong Python development experience• Deep knowledge of Linux internals and configuration management tooling• Strong debugging skills (host-level tracing, network diagnostics, performance profiling)• Familiarity with CI/CD and automated build/deployment systems• Experience with Rust, Go, Java, C or C# is beneficial• Exposure to DNS, DHCP, Kerberos, storage, and interop between Windows/Linux• Strong communication skills and ability to work across global teamsThis is a hands-on senior role for an engineer who wants to shape global infrastructure, work alongside exceptional technologists and operate at scale with meaningful ownership.