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Active4mo ago

Senior Systems Administrator

Shield AI·📍 London

Employment

FULL TIME

Work mode

On-site

Experience

4+ years

Salary

Not disclosed

Salary not disclosed

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Role overview

Job description

Shield AI is a venture-backed defense-tech company with the mission of protecting service members and civilians with intelligent systems. Its products include Hivemind autonomy software, V-BAT and X-BAT aircraft, and Aechelon simulation and synthetic reality technologies. With offices and facilities across the U.S., Europe, the Middle East, and Asia-Pacific, Shield AI’s technology actively supports operations worldwide. For more information, visit www.shield.ai. Follow Shield AI on LinkedIn, X, Instagram, and YouTube.  Job Description: The Senior Systems Administrator is responsible for supporting, securing, and optimizing enterprise IT operations. This includes end-user system support, infrastructure maintenance, IT asset lifecycle management, and leadership of junior team members. The ideal candidate brings strong technical expertise, organizational discipline, and a collaborative mindset to support a modern, scalable, and secure IT environment. What you'll do:
  • Provide hands-on desktop, server, and systems administration support for Windows and Linux environments.
  • Install, configure, and troubleshoot hardware and software issues across end-user devices and server systems.
  • Administer user accounts, access control, and group policies using Active Directory and Azure AD.
  • Manage IT assets throughout their lifecycle: procurement, deployment, support, and decommissioning.
  • Ensure proper inventory control, software licensing compliance, and asset tracking using IT asset management tools.
  • Generate reports on hardware/software usage, compliance, and asset depreciation for internal and audit needs.
  • Lead and mentor junior administrators and support staff; contribute to technical documentation and team training.
  • Participate in on-call rotation and perform maintenance activities outside business hours as required.
  • Collaborate with infrastructure, network, and security teams to support enterprise IT operations and incident response.
    • Required qualifications:
  • 4+ years of experience in systems administration or enterprise desktop support roles.
  • Strong proficiency in Windows and Linux operating systems.
  • Experience with Active Directory, Azure AD, and identity/access management tools.
  • Knowledge of networking fundamentals (TCP/IP, DNS, DHCP) and endpoint security practices.
  • Familiarity with IT asset management platforms (e.g., SNIPE, JSM, JIRA).
  • Ability to participate in an on-call rotation and off-hours maintenance windows.
  • Strong documentation, troubleshooting, and customer service skills.
  • Excellent communication and collaboration across technical and non-technical teams.
    • Preferred qualifications:
  • Experience with Microsoft Endpoint Manager (Intune), JAMF, and scripting in PowerShell.
  • Working knowledge of ITIL practices related to change, incident, and asset management.
  • Previous experience in asset lifecycle planning and procurement strategy.
  • Experience supporting remote and hybrid work environments.
  • Industry certifications (e.g., CompTIA, Microsoft, ITIL, Cisco) are a plus.
    • Why join Shield AI:
  • Help build the defining defence technology company of this century.
  • Work at the forefront of AI, autonomy, and next-generation defence systems.
  • Operate in a highly entrepreneurial and mission-driven environment.
  • Make a direct impact on international growth and strategic defence partnerships.
  • Collaborate with exceptional teams solving some of the world’s most complex operational challenges.
    • #LI-LD2 #LC   Our international teammates receive a comprehensive total rewards package aligned to your country office location. For full details on compensation and benefits, please consult your talent acquisition partner.

    About this listing

    • Source: Shield AI's official careers site (via Lever) · last confirmed on the source 29 Oct 2026
    • Posted 16 Jun 2026

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    What they are looking for

    Skills & requirements

    azure →linux →ai →procurement →customer service →

    Qualification

    4+ years of experience in systems administration or enterprise desktop support roles

    Department · Enterprise Operations Division

    Hiring company

    Shield AI

    Technology

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