Linux Systems Engineer – TS/SCI with Polygraph

Leidos; Chantilly (VA); On-site; USD 87,000 - 157,000; Full time

Benefits offered by this job

Health & Wellness programs

Paid Leave

Retirement

Job summary

Leidos is seeking a Linux Systems Engineer to support a mission-critical customer environment in Chantilly, VA. This hands-on role focuses on Linux servers in virtualized environments and maintaining system security and compliance.

The successful candidate will perform system administration, configuration management, virtualization, and security operations across a multi-network environment, with active TS/SCI eligibility and crossover suitability.

Qualifications

• Bachelor's degree and ~4 years of relevant experience.
• Hands-on Linux system administration and engineering experience.
• Experience maintaining security posture including scans and audits.

Responsibilities

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

Skills

Linux admin

System engineering

Security compliance

Virtualization

Troubleshooting

Team collaboration

Effective communication

Education

Bachelor's degree

Tools

VMware

Docker

RH Enterprise Linux

Job description

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.

Primary Responsibilities

• 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.

Basic Qualifications

• Active TS/SCI with the required Polygraph.
• Bachelor's degree and approximately 4 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.

Preferred Qualifications

• 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.

Pay Range

Pay Range $87,100.00 - $157,450.00

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

• competitive compensation
• Health and Wellness programs
• Income Protection
• Paid Leave
• Retirement

More details are available at www.leidos.com/careers/pay-benefits.

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.