Linux and Windows System Administrator

• Implement and maintain monitoring, logging, backup/restore solutions, and operational documentation/runbooks.

• Support account and access administration processes in accordance with least privilege and security policy requirements.

• Automate repeatable administrative tasks using PowerShell, Bash, Ansible, or similar automation tools.

• Deploy and maintain operating system images through PXE/network boot, disk imaging, and automated installation methods using answer files/scripts.

• Perform system hardening activities aligned with NIST 800-53 security controls.

• Administer and troubleshoot Active Directory, DNS, DHCP, file servers, virtualization platforms, and networking/switch infrastructure.

• Support dual-boot bare metal configurations with virtualized environments.

• Participate in after-hours support and on-call rotations as required.

• Conduct research and analysis necessary to resolve complex technical problems.

Basic Qualifications

• Current Active DoD SECRET clearance.

• Security+ certification required.

• Bachelor of Science degree in a technical field with 4+ years of relevant experience. Additional years of relevant experience may be considered in lieu of a degree.

• Experience administering Windows Server and Linux systems in an enterprise environment.

• Experience implementing NIST 800-53 control families and system hardening practices.

• Experience administering core infrastructure services including:

• Active Directory
• DNS
• DHCP
• File Servers

• Experience with systems build, integration, maintenance, troubleshooting, and vulnerability remediation.

• Experience deploying operating system images using kickstart, iso/disk imaging, and automated installation methods.

• Experience with virtualization technologies and basic networking/switch administration.

• Strong troubleshooting skills involving operating systems, services, permissions, performance, and networking fundamentals.

• Experience with Windows and Linux patch management and operating system updates.

• Ability to create Linux and PowerShell scripts to automate repetitive tasks.

• Familiarity with software repository management.

• Ability to work independently and collaboratively with minimal supervision.

• Strong analytical, communication, and problem-solving skills.

Preferred Qualifications

• RedHat Certified System Administrator (RHCSA) certification.
• Experience working with virtual environments.
• Familiarity with automation/configuration management tools such as Ansible.
• Experience supporting secure or classified environments.
• Knowledge of backup, recovery, logging, and enterprise monitoring solutions.
• Experience with STIG compliance and vulnerability scanning tools.

If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.

Original Posting:

May 15, 2026

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 $87,100.00 - $157,450.00

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.

About Leidos

Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit www.Leidos.com.

Pay and Benefits

Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at www.leidos.com/careers/pay-benefits.

Securing Your Data

Beware of fake employment opportunities using Leidos' name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at LeidosCareersFraud@leidos.com.

If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission.

Commitment to Non-Discrimination

All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.

Client-provided location(s): Xenia, OH

Job ID: Leidos-R-00183371

Employment Type: FULL_TIME

Posted: 2026-05-15T18:44:42