Senior Systems Administrator - Secure Windows/Linux Ops

Anduril Industries; Costa Mesa (CA); On-site; USD 146,000 - 194,000; Full time

Job summary

Anduril Industries seeks a Senior Systems Administrator to independently secure and maintain enterprise Windows and Linux systems in classified environments. You will mentor staff, handle architecture changes, and lead high‑risk remediation efforts.

Responsibilities include administering AD/GPO, WSUS patching, and virtualization; you will use PowerShell/Bash for automation, investigate complex issues, and document findings for change control.

Qualifications

• Active TS/SCI security clearance.
• Active CompTIA Security+ or DoD 8140/8570-aligned cert.
• Strong Windows and Linux admin experience.
• Experience with Active Directory, GPO, patch management, and domain-connected systems.
• Experience interpreting and remediating DISA STIG findings.
• VMware/Hyper‑V or similar virtualization knowledge.
• Strong TCP/IP, DNS, DHCP, and network troubleshooting.
• Scripting with PowerShell, Bash, or equivalents.
• Ability to research and resolve complex problems and mentor others.

Responsibilities

• Independently administer and troubleshoot Windows Server/desktop and Linux systems.
• Manage GPOs, WSUS/patching, DNS, DHCP, and PKI dependencies.
• Plan and implement system changes, upgrades, and migrations.
• Lead and mentor junior admins; document findings and actions.
• Identify security gaps and lead practical improvements within architecture.
• Escalate only for high-risk or unfamiliar issues.

Skills

TS/SCI clearance

Windows admin

Linux admin

Active Directory & GPO

DISA STIG remediation

VMware/Hyper‑V

Networking TCP/IP

Scripting: PowerShell/Bash

Mentoring others

Job description

Anduril Industries seeks a Senior Systems Administrator to independently secure and maintain enterprise Windows and Linux systems in classified environments. You will mentor staff, handle architecture changes, and lead high‑risk remediation efforts.

Responsibilities include administering AD/GPO, WSUS patching, and virtualization; you will use PowerShell/Bash for automation, investigate complex issues, and document findings for change control.