Senior System Administrator

The Opportunity

You will provide hands-on system administration and technical cybersecurity implementation support. The system operates under an active Authority to Operate (ATO). You must possess and maintain a current Secret security clearance and satisfy all access, need-to-know, and local security requirements necessary to perform duties within the system environment.

What You Will Do

• Administer & Secure: Administer, operate, maintain, secure, harden, and troubleshoot a predominantly Linux-based computing environment, primarily Ubuntu Linux with a limited number of Red Hat Enterprise Linux (RHEL) and Microsoft Windows systems, as well as associated COTS hardware and software
• Configure & Maintain: Perform operating-system installation and configuration; software installation, configuration, and maintenance; system baseline and configuration management; user and privileged-account administration; access-control implementation; and patch and update management
• Troubleshoot: Provide technical troubleshooting across the Linux, RHEL, Windows, and COTS components of the computing environment
• Implement Security Controls: Implement and maintain applicable technical security controls; apply, validate, document, and remediate Defense Information Systems Agency (DISA) Security Technical Implementation Guide (STIG) requirements
• Manage Vulnerabilities: Support vulnerability identification, analysis, remediation, and reporting
• Sustain Authorization: Support Continuous Monitoring (ConMon) requirements through maintenance of system configuration records, patch-status reports, scan results, remediation evidence, and other technical artifacts required to sustain the system's authorization posture
• Coordinate: Coordinate with the Government-designated Risk Management Framework (RMF) Specialist, cybersecurity personnel, software development leads, system engineers, and program management personnel to plan and execute Government-approved changes, resolve system and cybersecurity issues, and maintain system availability, security, and compliance

What You Bring

• Clearance: An active Secret clearance is required to start
• Hands-on experience administering Linux-based computing environments (Ubuntu and RHEL)
• Experience with system hardening, patch management, and configuration management
• Knowledge of DISA STIGs and experience applying and remediating STIG requirements
• Experience with vulnerability management, including identification, analysis, and remediation
• Familiarity with Continuous Monitoring (ConMon) processes and RMF artifacts
• Experience with user and privileged-account administration and access-control implementation
• Understanding of networking fundamentals and system troubleshooting
• Experience coordinating with cybersecurity, engineering, and program management teams
• Strong written and verbal communication skills
• Ability to work in a secure, classified environment and comply with all access and need-to-know requirements

Preferred Qualifications

• CompTIA Security+ CE certification
• Linux+ or vendor-specific Linux certification (Red Hat, Ubuntu)
• Experience with DoD mission systems
• Experience with configuration management tools (Ansible, Chef, Puppet, etc.)
• Familiarity with RMF assessment and authorization processes

What We Offer

• Compensation: $132,898 – $176,219, based on experience and qualifications
• Comprehensive health, dental, and vision insurance
• 401(k) with company match
• Professional development opportunities and continuing education support