Linux System Administrator – TS/SCI

Linux System Administrator – TS/SCI

Department: Government Customer- Chantilly Location: Chantilly, VA

ACTIVE TOP SECRET CLEARANCE REQUIRED. MUST BE ELIGIBLE FOR SCI ACCESS AND WILLING TO OBTAIN A CI POLYGRAPH. Job Responsibilities

• Administer, maintain, and troubleshoot Linux systems across multiple enterprise environments supporting mission-critical operations and development activities.
• Monitor system health, performance, availability, and operational status to ensure reliable and secure system functionality.
• Support cloud infrastructure initiatives and evolving customer technical requirements.
• Administer and maintain enterprise collaboration applications, including Atlassian Jira, Confluence, RocketChat, and comparable platforms.
• Manage user accounts, permissions, application access, and system configurations.
• Identify and respond to system anomalies, performance degradation, and operational incidents to support established availability requirements.
• Coordinate with enterprise service providers during system outages and support failover activities across availability zones or data centers.
• Perform routine system checkouts, software upgrades, security patches, and configuration updates.
• Collaborate with cybersecurity and enterprise engineering teams to maintain compliance with applicable security policies and operational requirements.
• Investigate technical incidents, perform root cause analysis, and document corrective actions and workarounds.
• Develop and maintain operational procedures, technical documentation, user guides, and Linux administration scripts.
• Coordinate technical communications with end users, support teams, government stakeholders, and program leadership.
• Support infrastructure improvements, system optimization, and operational process enhancements.

Required Qualifications

• Bachelor's degree in Computer Science, Information Technology, or a related technical field with 2–4 years of relevant systems administration experience.
• Strong Linux systems administration background and knowledge of enterprise infrastructure management practices.
• Experience administering, configuring, monitoring, and troubleshooting Linux-based systems.
• Familiarity with collaboration and development platforms such as Jira, Confluence, and RocketChat.
• Experience managing user accounts, system configurations, software updates, and access permissions.
• Ability to troubleshoot technical incidents, analyze system performance, and implement corrective actions.
• Strong problem-solving, decision-making, and technical documentation skills.
• Excellent written and verbal communication skills.
• Ability to work independently and collaborate with multidisciplinary technical teams.
• Current CompTIA Security+ certification before starting.
• Ability to work a Panama shift schedule, including weekends and holidays.
• Active Top Secret clearance with eligibility for SCI access and willingness to obtain a polygraph.

Desired Qualifications

• Active TS/SCI clearance with CI Polygraph.
• Experience supporting Department of Defense (DoD), Intelligence Community (IC), or other federal government IT environments.
• Familiarity with Amazon Web Services (AWS) or comparable cloud service providers.
• Knowledge of cloud-based architectures and enterprise infrastructure services.
• Experience supporting cross-domain architectures or interconnected enterprise environments.
• Familiarity with automated system testing, monitoring, and performance management tools.
• Experience participating in Engineering Review Boards, configuration management, or change control processes.
• Experience supporting high-availability systems and operational incident management.

TENICA is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, or protected veteran status and will not be discriminated against on the basis of disability.