The Multi-Domain Solutions (MDS) division at Leidos is seeking a highly experienced and detail-oriented Systems Administrator to lead the installation, configuration, administration, and maintenance of complex enterprise systems and associated hardware. The ideal candidate will drive IT infrastructure strategy, ensure system reliability, performance, and security, and provide technical leadership across physical and virtual environments.

Primary Responsibilities:

• Install, configure, and maintain systems, including servers and supporting hardware, in physical and virtualized environments.
• Administer and support systems infrastructure in alignment with established functional specifications and organizational best practices.
• Monitor system performance, review logs, and troubleshoot issues to maintain system uptime and reliability.
• Implement and support system backups, disaster recovery procedures, and restore operations.
• Manage storage resources, apply patches and system updates, and perform routine performance tuning.
• Develop and maintain documentation for system configurations, processes, and procedures.
• Recommend improvements to system performance, security, and operational efficiency.
• Collaborate with cross-functional IT teams to support organizational technology needs.
• Support technical projects, system upgrades, and process improvements.
• Ensure compliance with security policies and regulatory requirements.

Basic Qualifications

• TS/SCI w/ Poly Clearance is required
• Bachelor’s degree with at least 4 years of relevant experience OR Master’s degree with at least 2 years of relevant experience. Additional experience may be considered in lieu of degree.
• Experience in installation, configuration, administration, support, and maintenance of IT systems and associated hardware.
• Working knowledge of system infrastructure management and IT best practices.
• Hands-on experience with system administration, server administration, system configuration, deployment, and troubleshooting.
• Proficiency managing physical and virtual systems.
• Experience supporting backup and recovery operations in enterprise environments.
• Ability to update and support systems by tuning performance, allocating storage, and implementing patches.
• Proficiency in Microsoft Windows environments and Active Directory (AD) administration.
• Experience with scripting and automation, including Microsoft PowerShell.
• Experience supporting technical projects and process improvements.

Preferred Qualifications

• Experience supporting system upgrades or infrastructure improvement efforts.
• v Sphere administration (ESXi, v Center)
• Cisco routing and switching
• Windows Server installation, configuration, patching
• Familiarity with reviewing system performance logs and resolving operational issues.
• Experience working collaboratively with cross-functional IT teams.
• Understanding of security compliance requirements in enterprise or mission environments.

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:

March 16, 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 $73,450.00 - $132,775.00

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.