Linux Systems Engineer

Description

Leidos is seeking a Linux Systems Engineer to support a mission-critical customer environment in Chantilly, VA. This position is ideal for a hands-on Linux administrator or systems engineer with experience supporting Linux servers in virtualized environments and maintaining system security and compliance requirements
.

The successful candidate will support day-to-day system administration, engineering, configuration management, virtualization, and security operations across a multi-network environment.

Candidates must currently possess an active TS/SCI with the required Polygraph and be eligible for customer crossover.

• Administer, configure, maintain, and troubleshoot Linux-based systems and servers within a virtualized environment.
• Maintain the operational security posture of information systems and support day-to-day system security operations.
• Perform and support system vulnerability scans, security audits, remediation, and compliance activities
  .
• Implement and maintain system security configurations and requirements.
• Provide configuration management for information system hardware, software, firmware, and security components.
• Support system engineering activities, including planning, designing, analyzing, and improving hardware- and software-based system processes.
• Troubleshoot complex system and infrastructure issues and develop effective technical solutions.
• Support systems operating across multiple network environments.
• Work collaboratively with engineers, developers, technicians, analysts, and users to identify requirements and resolve technical issues.
• Investigate and document existing system architectures and configurations.
• Support operational systems in a dynamic mission environment.

• Active TS/SCI with the required Polygraph.
• Bachelor's degree and approximately 12 years of relevant experience.
• At least four years of recent experience supporting systems engineering, system administration, system processes, and/or software development methodologies.
• Demonstrated hands‑on experience with Linux system administration and engineering
  .
• Experience maintaining the security posture of information systems
  , including system scans, security audits, and day‑to‑day security operations.
• Experience with configuration management of system hardware, software, firmware, and security components.
• Demonstrated ability to troubleshoot and solve complex technical problems.
• Experience working as part of a multidisciplinary technical team.
• Strong verbal and written communication skills.

• Experience with Red Hat Enterprise Linux (RHEL).
• Experience implementing or maintaining DISA STIGs or similar system‑hardening/security‑compliance requirements
  .
• Experience with virtualization and container technologies such as VMware, Red Hat Virtualization, and Docker
  .
• Experience configuring, deploying, or maintaining Identity and Access Management (IdAM), Multi‑Factor Authentication (MFA), and PKI‑enabled systems
  .
• Experience translating user and developer use cases into technical system requirements.
• Experience documenting existing system architectures.
• Experience supporting operational mission systems.

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.

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…