Linux Engineer

Linux Engineer

Posted Today by Jobserve

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Negotiable
Outside
Hybrid
London
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Ansible Application Environments Automation Banking Bash (Scripting Language) Common Vulnerability Scoring System (CVSS) Core Banking Docker (Software) External Auditing File Servers Hardening Linux Linux Servers Logical Volume Manager Middleware Oracle Linux Ping (Networking Utility) Scripting Security Content Automation Protocol Stakeholder Management Syslog Ubuntu (Operating System) Vulnerability

Summary: The Linux Engineer role involves migrating a banking customer's Linux server estate from Ubuntu 18.04 to 24.04 LTS, enforcing CIS Level 2 hardening across all systems. The position requires expertise in building and maintaining hardening automation pipelines while diagnosing application layer issues related to compliance. Strong engagement with business stakeholders is essential for managing dependencies and expectations. The role is a 6-month contract, classified as outside IR35, with a hybrid working arrangement in London.

Key Responsibilities:

  • Manage and improve Ubuntu 24.04 build and hardening automation using Bash, Ansible, cloud-init, and vSphere tools
  • Develop CIS Level 2 hardening and OS provisioning playbooks with tailored compliance exceptions
  • Run monthly patching processes, including vulnerability reporting, approvals, and phased deployments
  • Troubleshoot hardening-related issues across Docker, AppArmor, Kernel settings, filesystems, and Legacy applications
  • Create pre-migration audit scripts to capture server configurations and dependencies
  • Support and remediate issues across complex application environments including Ping, Netcall, SFTP, syslog, and WordPress
  • Lead migration discovery sessions with stakeholders to identify risks, dependencies, and compliance impacts
  • Work across banking, integration, database, and automation platforms while maintaining audit and migration documentation

Key Skills:

  • Linux Expertise: Ubuntu 18.04-24.04 administration and hardening; deep familiarity with systemd, AppArmor, LVM, mount options, and service behaviour under CIS Level 2 constraints
  • Automation: Ansible Lockdown, Vault, roles, dynamic inventories; Bash Scripting to production standard
  • CIS/Security: Ubuntu Security Guide (USG), SCAP, CIS Level 2 tailoring and exception management; CVSS v3/v2 scoring and patch reporting
  • Containers: Docker on hardened Ubuntu hosts - diagnosing AppArmor, bridge networking, and Kernel parameter conflicts introduced by CIS controls
  • App Environments: Experience with complex, partially-documented application stacks; ability to trace service failures back to specific CIS controls
  • Banking/financial experience would be beneficial

Salary (Rate): £550.00 Daily

City: London

Country: United Kingdom

Working Arrangements: hybrid

IR35 Status: outside IR35

Seniority Level: undetermined

Industry: IT

Detailed Description From Employer:

Linux Engineer - 6-month contract - Outside of IR35 - London/remote

My Banking Customer is migrating its Linux server estate from Ubuntu 18.04 to 24.04 LTS, with CIS Level 2 hardening enforced across all systems. The programme spans a broad and complex application estate - including core banking platforms, identity infrastructure, integration middleware, containerised workloads, and Legacy line-of-business applications.

This role requires someone who can build and maintain the hardening automation pipeline and also operate effectively at the application layer - diagnosing why CIS Level 2 breaks a Docker-based app, a Legacy SFTP chroot, or a low-code platform, and engineering a compliant resolution. Substantial business engagement is required to discover dependencies, obtain formal sign-off, and manage stakeholder expectations across technical and non-technical teams.

Key skills required from the Linux Engineer:

  • Linux Expertise: Ubuntu 18.04-24.04 administration and hardening; deep familiarity with systemd, AppArmor, LVM, mount options, and service behaviour under CIS Level 2 constraints
  • Automation: Ansible Lockdown, Vault, roles, dynamic inventories; Bash Scripting to production standard
  • CIS/Security: Ubuntu Security Guide (USG), SCAP, CIS Level 2 tailoring and exception management; CVSS v3/v2 scoring and patch reporting
  • Containers: Docker on hardened Ubuntu hosts - diagnosing AppArmor, bridge networking, and Kernel parameter conflicts introduced by CIS controls
  • App Environments: Experience with complex, partially-documented application stacks; ability to trace service failures back to specific CIS controls
  • Banking/financial experience would be beneficial

Key responsibilities of the Linux Engineer:

  • Manage and improve Ubuntu 24.04 build and hardening automation using Bash, Ansible, cloud-init, and vSphere tools
  • Develop CIS Level 2 hardening and OS provisioning playbooks with tailored compliance exceptions
  • Run monthly patching processes, including vulnerability reporting, approvals, and phased deployments
  • Troubleshoot hardening-related issues across Docker, AppArmor, Kernel settings, filesystems, and Legacy applications
  • Create pre-migration audit scripts to capture server configurations and dependencies
  • Support and remediate issues across complex application environments including Ping, Netcall, SFTP, syslog, and WordPress
  • Lead migration discovery sessions with stakeholders to identify risks, dependencies, and compliance impacts
  • Work across banking, integration, database, and automation platforms while maintaining audit and migration documentation

Apply now to speak with VIQU IT in confidence. Or reach out to Connor Smal via the VIQU IT website.

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