Sr Systems Administrator

About the role

This role is a Senior-level Systems Administrator position responsible for the administration, security, compliance, and operational support of enterprise IT infrastructure within highly regulated and mission-critical environments. The ideal candidate possesses deep expertise in Linux and Windows systems administration, endpoint management, server operations, desktop support, and virtualization technologies such as VMware. Beyond hands-on technical responsibilities, this position serves as a Senior technical leader, providing guidance, mentorship, and knowledge transfer to junior administrators and support personnel while helping establish operational best practices, technical standards, and system administration procedures. The successful candidate will act as a trusted technical resource across cross-functional teams, supporting complex troubleshooting efforts, driving continuous improvement initiatives, and ensuring the stability, performance, and security of enterprise systems. The role requires extensive experience managing Microsoft Endpoint Configuration Manager (MECM), administering enterprise server environments, supporting virtualized infrastructure, and maintaining secure computing environments aligned with compliance frameworks such as RMF and DFARS. Candidates should demonstrate a strong security-focused mindset, supported by industry certifications such as Security+, CISSP, or equivalent credentials, and experience operating within cleared government or defense environments. This position is well suited for a seasoned Systems Administrator who can balance strategic technical leadership with hands-on administration, support critical infrastructure operations, mentor developing team members, and serve as a subject matter expert for systems, security, compliance, and enterprise endpoint management.

Responsibilities

• Administer, secure, and ensure compliance of enterprise IT infrastructure in regulated, mission‑critical environments.
• Manage Linux and Windows systems, endpoint management, server operations, desktop support, and VMware virtualization.
• Provide technical leadership, mentorship, and knowledge transfer to junior administrators.
• Establish operational best practices, technical standards, and system administration procedures.
• Support cross‑functional teams with complex troubleshooting and drive continuous improvement initiatives.
• Ensure stability, performance, and security of enterprise systems.
• Manage Microsoft Endpoint Configuration Manager (MECM).
• Administer enterprise server environments and support virtualized infrastructure.
• Maintain secure computing environments aligned with RMF and DFARS compliance frameworks.
• Apply a security‑focused mindset and leverage certifications (Security+, CISSP, etc.) within cleared government/defense settings.
• Balance strategic technical leadership with hands‑on administration to support critical infrastructure operations.
• Serve as a subject matter expert for systems, security, compliance, and enterprise endpoint management.

Requirements

• Expert‑level experience administering enterprise server environments, operating systems, infrastructure services, and supporting complex troubleshooting and operational activities (Senior Systems Administration – Linux & Windows).
• Extensive hands‑on experience with Microsoft Endpoint Configuration Manager (MECM), desktop support, server administration, VMware, and enterprise infrastructure management (Endpoint Management, Server Operations & Virtualization).
• Security certifications (Security+, CISSP, or equivalent), experience with RMF and DFARS compliance requirements, and ability to operate effectively within security‑sensitive government or defense environments (Cybersecurity, Compliance & Cleared Environment Support).

Skills

• Windows
• System administrator
• Vmware
• Active directory
• Windows server
• Linux
• Infrastructure
• Server administrator
• Systems engineering
• Security

Benefits

• Medical, dental & vision
• Critical Illness, Accident, and Hospital coverage
• 401(k) Retirement Plan (pre‑tax and Roth post‑tax contributions available)
• Life Insurance (Voluntary Life & AD&D for employee and dependents)
• Short and long‑term disability
• Health Spending Account (HSA)
• Transportation benefits
• Employee Assistance Program
• Time Off/Leave (PTO, Vacation or Sick Leave)

Pay

The pay range for this position is $50.00 - $70.00 per hour. Individual compensation offered within this range will depend on qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job‑related factors.