Senior 3rd Line Infrastructure Engineer – DV Cleared

Leidos LLC; Huntingdon; On-site; GBP 47,000 - 79,000; Full time

Benefits offered by this job

Contributory Pension

Private Medical Insurance

33 days annual leave

Flexible benefits

Flexi-Time

Diversity & inclusion commitment

Job summary

Leidos UK is seeking a Senior 3rd Line Engineer to provide high‑level IT system support, incident resolution, and problem management for critical national security outputs. Responsibilities include proactive maintenance of the JUNO system, advanced troubleshooting, and stakeholder liaison at all levels.

The role requires expertise in virtualization, VDI, storage, backup, Windows and Linux, networking, and cloud‑native platforms.

Qualifications

• Extensive knowledge of virtualized environments and VDI.
• Strong Windows Server and Linux system administration experience.
• Solid networking, backup, and storage technologies knowledge.
• Ability to diagnose complex issues and document solutions clearly.

Responsibilities

• System support and incident resolution for Cat A systems to meet SLAs.
• Root cause analysis with other resolver groups and manufacturers.
• Periodic maintenance and system upgrades to mitigate obsolescence.
• Create/update system configuration documentation and change records.
• Assist in deployment and integration of infrastructure components.
• Participate in infrastructure projects and CRs.

Skills

Virtualized environments

VDI environments

HCI technologies

SAN storage

Backup & recovery

Windows Server 2008-2025

Linux administration

TCP/IP & networking

SDN / NSX-T / Arub a

Microsoft stack

Cloud-native platforms

Kubernetes & Docker

Scripting

Documentation skills

Analytical thinking

Communication skills

Education

ITIL Foundation

Tools

VMware

Hyper-V

NetApp

Nutanix

Veeam

Commvault

Active Directory

SharePoint / Teams / MS SQL

SCCM / SCOM

VMware NSX-T

Job description

Leidos UK is seeking a Senior 3rd Line Engineer to provide high‑level IT system support, incident resolution, and problem management for critical national security outputs. Responsibilities include proactive maintenance of the JUNO system, advanced troubleshooting, and stakeholder liaison at all levels.

The role requires expertise in virtualization, VDI, storage, backup, Windows and Linux, networking, and cloud‑native platforms.