Classified Area Systems Administrator

company with a focus on building skills and experiences through internal mobility. To support career development, we offer a variety of resources in addition to training and educational opportunities within an inclusive environment.

What will you do in this role?

• Report to the Information System Security Manager (ISSM) and contribute to system design, hardware/software implementation, and overall infrastructure support.

• Configure, administer, and maintain virtualized environments, specifically Hyper-V.

• Oversee, troubleshoot, and configure Windows Server and Windows 11 systems.

• Manage Windows Network Policy Server, DNS, and Active Directory services, Splunk, and ISE ensuring optimal performance and security.

• Implement, configure, and maintain Cisco Routers, Switches, and Next-Generation Firewalls and Intrusion Prevention Systems.

• Implement, configure, and maintain encryption (TACLANE) devices.

• Ensure compliance with Department of Defense (DoD) Security Technical Implementation Guides (STIGs).

• Troubleshoot and resolve complex IT issues across systems, networks, and applications.

• Collaborate with various IT staff to resolve issues with software, hardware, and network vendors/government entities as they arise.

• Develop and maintain comprehensive documentation for system configurations, policies, and procedures.

• Implement best practices for security, disaster recovery, and system redundancy.

• Ensure the proper marking, handling, and storage of classified materials.

Basic Qualifications.

• BS and 8+ years of prior relevant experience or Masters with 6+ years.

• Active DoD 8570 IAT II baseline certification (Security+, GSEC, SSCP, etc).

• Secret Clearance required with ability to obtain Top Secret.

• Familiarity with DNS, RADIUS, Active Directory, and Virtualization of systems.

• Experience with Cisco router and switch configurations.

• Experience with Cisco Next-Generation Firewall and Intrusion Prevention Systems.

• Windows Server and Windows 11 administration experience.

Preferred Qualifications.

• Professional Certifications (i.e. Cisco, Microsoft, CompTIA, Splunk).

• Top Secret Clearance.

• Public Key Infrastructure configuration knowledge/experience.

• 802.1x configuration knowledge/experience.

• Experience with eMASS or other authorization tooling.

• Splunk, CISCO ISE, ACAS, and Trellix (Formerly McAfee) experience.

• Familiarity with TACLANE administration.

Original Posting:
June 6, 2025
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:
Pay Range $104,650.00 - $189,175.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.