Systems Administrator - Network & Computer Systems

Description

Terms:  Fulltime, Hybrid (onsite 3 days a week, with potential to be fully onsite)

About Chartis Federal

Chartis Federal is a premier systems engineering and integration firm specializing in mission-critical IT and communications solutions for law enforcement, homeland security, and defense. As a trusted prime contractor with over $160 million in task order awards, we operate across 22 states and support essential government missions worldwide.

Our commitment to excellence has fueled our year-over-year growth, earning us recognition twice as a Washington Technology FAST 50 company and securing a place on the Inc. 5000 list for five consecutive years. At Chartis Federal, our mission is clear: keeping heroes safe and connected—on the battlefield, on the border, and in our backyards.

Position Overview

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.

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

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