Piper Companies 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. #LI-JN1 #LI-ONSITE