Senior Systems Admin: Windows/Linux, Virtualization Lead

Amentum; Hanover (MD); On-site; USD 195,000 - 205,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

Paid time off

401(k) matching

Educational reimbursement

Parental leave

Employee stock purchase plan

Job summary

Amentum is seeking a System Administrator Level 3 with an active TS/SCI with Poly to support government-owned IT systems used for training delivery. The role emphasizes senior technical leadership, complex incident response, and robust documentation in a fast-paced environment.

You will manage Windows and UNIX/Linux systems, oversee virtualization for training labs, and lead patching, backups, and runbook development.

Qualifications

• Hands-on system administration for Windows and UNIX/Linux platforms.
• Experience administering virtualization platforms and training labs.
• Develop/runbooks, SOPs, and procedures; ensure audit readiness and compliance.
• Strong incident response, troubleshooting, and restoration skills.
• Documentation standards and change-control practices.

Responsibilities

• Perform advanced system administration for Windows and UNIX/Linux systems supporting training delivery, including configuration, performance tuning, troubleshooting, and restoration actions for complex issues.
• Lead technical troubleshooting and restoration for complex incidents affecting system services; coordinate with peer teams and document resolutions.
• Administer and optimize virtualization environments for training labs, including resource configuration, template management, snapshot governance, and repeatable reset-to-known-good workflows.
• Own and maintain system administration runbooks, SOPs, checklists, and technical procedures in editable, version-controlled formats; reflect current baselines and lessons learned.
• Execute and validate authorized maintenance activities (patching, upgrades, configuration changes) with pre/post validation and evidence artifacts.
• Lead backup/restore operations, including restore execution and periodic testing.
• Provide technical mentoring to junior system administrators on tooling, procedures, troubleshooting methods, and documentation quality.
• Maintain and validate system inventories and service dependency documentation to support continuity.

Skills

Senior leadership

Windows & Linux systems

Virtualization

Incident response

Documentation & SOPs

Change management

Education

Doctoral degree in a technical discipline

Master’s degree in a technical discipline

Bachelor’s degree in a technical discipline

Associate’s degree in computer-related field

High school diploma with 14 years of related experience

Job description

Amentum is seeking a System Administrator Level 3 with an active TS/SCI with Poly to support government-owned IT systems used for training delivery. The role emphasizes senior technical leadership, complex incident response, and robust documentation in a fast-paced environment.

You will manage Windows and UNIX/Linux systems, oversee virtualization for training labs, and lead patching, backups, and runbook development.