Systems Administrator - Network & Computer Systems

Chartis Federal

2d•Hybrid

About The Position

The Systems Administrator provides hands-on systems administration support with a strong emphasis on security compliance, system hardening, and remediation activities across enterprise Windows and Linux environments. This role supports operational stability, cybersecurity posture, and compliance objectives by addressing vulnerabilities, applying secure configurations, and maintaining system integrity in accordance with established security baselines and organizational policies.

Requirements

3 – 5 years of experience in systems administration supporting enterprise environments
Active Secret security clearance required at time of hire.
Hands-on experience administering Windows and Linux operating systems
Demonstrated experience performing STIG remediation and vulnerability mitigation
Familiarity with system hardening standards, security baselines, and patch management practices
Experience interpreting and responding to vulnerability scan results
Strong troubleshooting skills with the ability to diagnose and resolve system issues
Ability to document technical actions clearly and accurately
Strong attention to detail and ability to manage multiple tasks in a regulated environment
Ability to work onsite as required

Responsibilities

Perform Security Technical Implementation Guide (STIG) remediation and vulnerability mitigation across enterprise systems
Execute assigned tasking to remediate and close legacy STIG findings and vulnerability scan results within defined timelines
Apply operating system patches, configuration changes, and security hardening in alignment with approved baselines and change management procedures
Administer and support Windows and Linux operating systems, including troubleshooting system issues, resolving incidents, and supporting day-to-day operations
Validate remediation actions through testing and verification to ensure findings are fully resolved and compliant
Support security compliance documentation, reporting, and audit preparation activities
Monitor system performance, availability, and security posture, escalating issues as appropriate
Collaborate with cybersecurity, network, and engineering teams to support secure system operations
Maintain accurate system documentation, including configurations, remediation actions, and standard operating procedures
Participate in vulnerability scanning cycles, patch management activities, and continuous improvement initiatives
Follow established policies, procedures, and security controls to ensure system reliability and compliance