Senior Systems Administrator (R5064)

Posted 13 Hours Ago
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London, Greater London, England, GBR
In-Office
Mid level
Aerospace • Artificial Intelligence • Machine Learning • Robotics • Software • Defense Technology
Our mission is to protect service members and civilians with intelligent systems.
The Role
Supports and secures enterprise IT operations across Windows and Linux environments. Provides desktop, server, hardware, software, account, access control, asset lifecycle, inventory, licensing, and endpoint support. Generates compliance and asset reports, participates in on-call and after-hours maintenance, collaborates on incident response, and mentors junior staff. Requires systems administration experience, networking knowledge, documentation skills, and familiarity with asset management tools. Preferred qualifications include Intune, JAMF, PowerShell, ITIL, procurement, and relevant certifications.
Summary Generated by Built In
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 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:

  • 3+ 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:

  • 5+ years of IT experience, with at least 2 years in a senior or mentoring capacity.
  • 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.

Skills Required

  • 3+ years of experience in systems administration or enterprise desktop support roles
  • Strong proficiency with Windows and Linux operating systems
  • Experience with Active Directory, Azure AD, and identity/access management tools
  • Knowledge of networking fundamentals, including TCP/IP, DNS, and DHCP
  • Knowledge of endpoint security practices
  • Familiarity with IT asset management platforms such as SNIPE, JSM, or 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
  • 5+ years of IT experience
  • At least 2 years in a senior or mentoring capacity
  • Experience with Microsoft Endpoint Manager or Intune
  • Experience with JAMF
  • Scripting experience in PowerShell
  • Working knowledge of ITIL practices related to change, incident, and asset management
  • Experience in asset lifecycle planning and procurement strategy
  • Experience supporting remote and hybrid work environments
  • Industry certifications such as CompTIA, Microsoft, ITIL, or Cisco

What the Team is Saying

Dylan
Mo
Willy
Michael
Vibhav
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Ryan
Evan

Shield AI Compensation & Benefits Highlights

  • Healthcare Strength — Company materials highlight comprehensive medical, dental, and vision coverage with mental-health support and an EAP. Third-party benefits summaries also portray health coverage as a strong component of the package.
  • Retirement Support — Offerings include a 401(k) with employer matching, cited on the careers page and independent benefits directories. Multiple sources indicate a match exists, though exact formulas have varied over time and warrant confirmation.
  • Equity Value & Accessibility — Company communications describe equity for all full-time hires and stock benefits as part of total rewards. Independent listings also note company equity/RSUs as a standard element.

Shield AI Insights

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The Company
HQ: San Diego, CA
Year Founded: 2015

What We Do

At Shield AI, you won't wait years to see your work reach the field. You'll build hardware and software that operates in the real world right now, in the hands of the people who depend on it. Hivemind, our AI pilot, has been flying since 2018. It has flown more than 30 platforms, including an F-16, and it now sits under a U.S. Air Force production contract for Collaborative Combat Aircraft. When you write code or shape a system here, you contribute to technology with a proven flight record and a clear production future. V-BAT flies intelligence, surveillance, and reconnaissance missions with an operational record that stretches from Ukraine to the Indo-Pacific. It delivers eyes where they matter most, in the most demanding conditions on earth. The teams behind it watch their work get tested where the stakes are real. X-BAT takes its first flight this year. It's an AI-piloted fighter that needs no runway, built to operate where traditional aircraft can't. Join now and you help shape a program at its earliest, most formative stage. That's the kind of ground-floor work that defines a career. Do the most impactful work of your life, on problems that matter. Autonomy at this level asks a lot of you. You'll take on problems in perception, planning, and control that few teams anywhere are equipped to solve. You'll work across disciplines, from aerospace and robotics to machine learning and systems engineering, alongside people who hold themselves to an exacting standard and expect the same from you. Our mission is clear: protect service members and civilians with intelligent systems. That purpose runs through every decision, every design review, and every deployment. It's why the work here carries a weight you can feel. Ready to join our mission? Explore our open roles and find where you fit.

Why Work With Us

Founded in 2015 by a former Navy SEAL, Shield AI builds AI pilots and uncrewed aircraft. Veterans aren't an afterthought here, they're at every level. It's why the work carries weight: AI pilots and uncrewed aircraft flying real missions, from Ukraine to the Indo-Pacific, protecting service members and civilians.

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About our Teams

Shield AI Offices

Hybrid Workspace

Employees engage in a combination of remote and on-site work.

Typical time on-site: Flexible
HQSan Diego, CA
United Arab Emirates
Arlington, VA
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Frisco, Texas
Ukraine
London
Melbourne, Victoria
Taiwan, Province of China
Waltham, MA
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