Senior Systems Administrator (Windows & Linux) — Annapolis Junction, MD

WDFvG 3Ch4f9yNd is seeking a Senior Systems Administrator (Windows & Linux) for a government technology client supporting classified programs in Annapolis Junction, MD. The Senior Systems Administrator (Windows & Linux) will manage enterprise operating environments while ensuring compliance with security standards and operational requirements.

Responsibilities of the Senior Systems Administrator (Windows & Linux):

• Administer and maintain Windows and Linux server environments.

• Monitor system health, performance, and security compliance.

• Utilize Splunk and Nessus to identify and remediate vulnerabilities.

• Support system patching, upgrades, and hardening activities.

• Troubleshoot complex infrastructure issues across multiple platforms.

• Collaborate with cybersecurity and engineering teams to maintain secure operations.

Qualifications of the Senior Systems Administrator (Windows & Linux):

• Active TS/SCI clearance with Full Scope Polygraph (FSP).

• Security+ CE certification or higher.

• Experience administering both Linux and Windows environments.

• Experience with IT security compliance initiatives.

• Hands-on experience utilizing Splunk and/or Nessus.

• Strong problem-solving and infrastructure support experience.

Compensation for the Senior Systems Administrator (Windows & Linux) includes:

• Salary range: $80,000 - $200,000 depending on experience

• Comprehensive benefits package including medical, dental, vision, 401(k), and PTO

• Long-term career growth within mission-focused programs

This job opens for applications on 11/6/2026. Applications for this job will be accepted for at least 30 days from the posting date.