Systems Administrator Jobs

About The Position

Requirements

• Bachelor’s degree in IT, Information Systems, Cybersecurity, or a related field, or at least 5 years of relevant experience.
• At least 4 years of systems administration experience supporting U.S. government or defense contractor environments.
• Security+ certification or equivalent DoD 8570 baseline certification.
• Proficiency administering Windows and Linux systems.
• Hands-on experience applying DISA STIGs, SRGs, and SCAP to secure networked systems.
• Experience with enterprise security tools such as HBSS, SIEM, MFA, HIDS/NIDS, and vulnerability assessment platforms; Splunk is preferred.
• U.S. citizenship.
• Active Top Secret clearance.
• Willingness to work full-time in the office in Greenwood Village, Colorado.

Nice To Haves

• TS/SCI clearance, if applicable.
• Experience supporting hardware and software across standalone and LAN/WAN environments.
• Ability to identify and remediate security vulnerabilities across networked devices and applications.
• Knowledge of core IT security principles, including firewalls, DMZs, encryption, PKI, and entitlements management.
• Experience evaluating COTS/GOTS software for security considerations.
• Working knowledge of virtualization technologies.
• Ability to script in PowerShell, Python, or Bash.
• Familiarity with switches, routers, and firewalls.
• Strong written and verbal communication skills.
• Self-driven and able to work independently in a dynamic environment.

Responsibilities

• Deploy, configure, and maintain hardware and software supporting classified systems.
• Maintain secure baselines and system boundary configurations, including patch management, vulnerability remediation, and STIG implementation.
• Perform proactive system administration, backups, and repository configuration in accordance with monitoring plans.
• Participate in change management and assess the system impacts of proposed changes.
• Conduct vulnerability testing using ACAS/Nessus, SCAP, and related tools, and remediate findings within required timelines.
• Support testing and documentation of cybersecurity controls required for system accreditation.
• Identify and maintain authorization boundary diagrams, architecture diagrams, and hardware and software inventories.
• Ensure proper sanitization, archiving, and disposal of system resources in accordance with security plans.
• Provide technical inputs for ground assets supporting classified systems.
• Collaborate with engineering and operations stakeholders to integrate cybersecurity requirements into space and ground assets across development and operational phases.
• Report security concerns and configuration changes that may affect system performance or accreditation to the ISSO/ISSM.