Linux System Engineer - SGI - eFinancialCareers : Job Details

Linux Systems Engineer - Hybrid (2 Days Onsite, Central London)We are partnered with a high-performing technology organisation that builds complex, large-scale systems, and they are looking for an experienced Linux Systems Engineer to join their infrastructure team. This is a hybrid role with 2 days per week in their Central London office. What you’ll be doing:

• Auditing and documenting existing build servers, scripts, and Ansible playbooks
• Mapping dependencies across Linux configuration, Ansible, Packer, and AWS AMI pipelines
• Refactoring and modularising Ansible playbooks and Packer templates for efficiency and scalability
• Designing and implementing automated functional test suites (e.g. Testinfra, InSpec) and integrating them into CI pipelines (Jenkins, GitLab CI)
• Producing runbooks and knowledge transfer documentation to support wider adoption across the organisation

• Strong Linux engineering background, including systems, networking, storage, and security hardening
• Expertise in Ansible (idempotent playbooks, multi-distro support)
• Hands-on experience with Packer (HCL/JSON templates, caching, builders vs. provisioners)
• AWS knowledge (EC2, AMI lifecycle, snapshotting, launch permissions)
• Familiarity with CI/CD tools such as Jenkins or GitLab CI
• Exposure to functional testing frameworks such as Testinfra or InSpec

• Competitive salary + benefits package
• Flexible hybrid working (2 days onsite in Central London)
• The chance to work on technically complex, mission-critical systems in a collaborative engineering environment