Senior Systems Administrator: Lead IT Ops & Security

Shieldai; Dallas (TX); On-site; USD 80,000 - 110,000; Full time

Job summary

Shield AI is seeking a Systems Administrator to support, secure, and optimize enterprise IT operations across Windows and Linux environments. You will lead junior team members and manage asset lifecycle, licensing, and IT documentation.

The role covers on‑prem and cloud integrations, Active Directory/Azure AD, Intune, JAMF, and ITIL practices, with on‑call rotation and collaboration with network and security teams. Excellent communication is required.

Qualifications

• 3+ years of experience in systems administration or enterprise desktop support.
• Strong proficiency in Windows and Linux operating systems.
• Experience with Active Directory, Azure AD, and identity/access management tools.
• Experience with Microsoft Endpoint Manager (Intune), JAMF, and scripting in PowerShell.

Responsibilities

• 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.

Skills

Windows

Linux

Active Directory

Azure AD

Identity/access mgmt

PowerShell scripting

ITIL practices

Documentation

Troubleshooting

Customer service

Communication

Collaboration

Mentoring

On-call readiness

Remote work experience

Tools

Snipe-IT

Jira Service Management (JSM)

JIRA

PowerShell

Intune

Jamf

Job description

Shield AI is seeking a Systems Administrator to support, secure, and optimize enterprise IT operations across Windows and Linux environments. You will lead junior team members and manage asset lifecycle, licensing, and IT documentation.

The role covers on‑prem and cloud integrations, Active Directory/Azure AD, Intune, JAMF, and ITIL practices, with on‑call rotation and collaboration with network and security teams. Excellent communication is required.