Senior Linux Infrastructure Engineer - Full Time - London Based We’re seeking a skilled Linux Infrastructure Engineer to join our client's core infrastructure team working closely with engineering and support teams to deliver secure, high-performance systems. What you’ll be doing: Develop and enhance a Linux platform supporting global trading operations Partner with application and support teams to ensure a secure, scalable infrastructure Design and implement automation frameworks and tooling Build out monitoring and observability solutions Investigate and optimise performance across systems, networks, and applications Support build and release processes Work within a source-controlled engineering environment What you’ll bring: Deep Linux expertise (Red Hat–based systems preferred) Experience supporting large-scale and/or low-latency environments Strong background in automation and configuration management (e.g. Ansible, Puppet, Chef) Hands-on experience with monitoring and observability tools (e.g. Prometheus, Grafana, Elastic, Splunk) Exposure to build and release management pipelines Programming skills in Python and Bash (C/C++ advantageous) Solid understanding of networking fundamentals and protocols (TCP/UDP, LAN/WAN, multicast) Proven ability to analyse and tune system performance Comfortable working in collaborative, version-controlled teams Strong problem-solving skills and clear communicator