Linux Engineer

Linux Engineer 6-month contract London Outside of IR35The Linux Engineer will play a central role in upgrading servers to Ubuntu 24.04 LTS while implementing stringent CIS Level 2 security standards across a diverse and business-critical environment.The Linux Engineer will work closely with applications troubleshooting compatibility issues, identifying why hardened configurations break services, and delivering secure, practical solutions. The environment includes core banking systems, identity platforms, middleware, containerised workloads, and legacy applications, so adaptability and problem-solving are keySkills needed from the Linux Engineer: Strong Linux administration experience (Ubuntu preferred), including system internals and securityExperience upgrading to Ubuntu 24.04 from an older versionAdvanced automation skills using Ansible and Bash scriptingHands-on experience with system hardening standards and security frameworks (CIS compliant)Ability to troubleshoot complex environments and trace issues across systems and applicationsExperience upgrading servers in a 24/7 live environmentExperience working with virtualised infrastructure and automated build pipelinesLinux services, filesystems, and security controls (e.g., access management, kernel settings)Container platforms and their interaction with host-level securityPatch management, vulnerability scoring, and risk-based remediationManaging and supporting mixed, partially documented application environments Key ..... full job details .....