System Administrator

Leidos' Corporate Information Security Office, reporting through the Digital sector, is seeking a Systems Administrator to support classified IT operations across a geographically distributed wide-area network (WAN) environment, supporting users, infrastructure, and IT personnel at multiple locations  this role, you will provide hands-on technical support for day-to-day WAN operations across a geographically distributed environment. The role focuses on independently troubleshooting routine issues, working with IT personnel at remote WAN sites, communicating technical status, and following issues through resolution.

The role combines strong Windows, Active Directory, and VMware skills with practical Linux experience, sound judgment, and a persistent approach to troubleshooting. The individual will work with senior technical staff, cybersecurity personnel, local IT leadership, and WAN PMO.

Location:

Primary Responsibilities This role includes a combination of duties to protect information, and maintain security controls, for an entire system, site, or program to reduce risk.

Systems administration. Systems administration. Support Windows 11, Windows Server, Active Directory, and VMware vSphere environments, including virtual machine administration, host management, troubleshooting, and routine maintenance. Support account and access administration, Group Policy, patching, and routine backup and recovery.

Security and encryption operations. Implement approved hardening and remediation with cybersecurity personnel. Following required training and authorization, support documented TACLANE/GEM One tasks with COMSEC personnel and site teams.

Linux and application support. Support Red Hat Enterprise Linux and Ubuntu, primarily workstations with some server support. Investigate issues involving approved applications and back-end services, using documentation and specialist support when needed.

Operational follow-through. Use Jira as the primary intake and tracking mechanism. Maintain clear updates, follow approval and change workflows, communicate with users, and track issues through resolution, including work performed by other team members.

Remote-site technical support. Work with IT personnel at geographically dispersed WAN sites to troubleshoot technical issues, exchange technical information, and support resolution of problems across the environment. Assist with implementing approved configurations as needed.

Technical troubleshooting and escalation. Troubleshoot routine server, storage, backup, connectivity, and service issues across distributed WAN locations. Gather diagnostic information, work with designated technical specialists, and support resolution of issues requiring additional expertise.

Deployments and modernization. Support approved server deployments, recovery testing, and potential virtualization migrations. Document existing configurations and help remote teams implement and validate approved designs.

Shared knowledge. Maintain runbooks, configuration records, and troubleshooting notes. Cross-train teammates, improve repeatable processes, and help build backup coverage for recurring operational tasks.

Basic Qualifications Education. Bachelor’s degree with 4-8 years of experience or equivalent relevant industry-standard certifications and experience.

Clearance and certification. Active, final Secret clearance, ability to maintain that clearance, and current DoD 8570 / 8140 IAT level IIor higher certification such as CompTIA Security+.Windows and identity services. Hands-on Windows workstation and server administration, with strong Active Directory troubleshooting, user/group management, permissions, Group Policy, and DNS knowledge.

Virtualization and recovery. Virtualization and…