Systems Administrator

York Space Systems • Greenwood Village, CO

4d • $90,000 - $125,000 • Onsite

About The Position

York Space Systems is seeking a Systems Administrator to support and maintain classified computing environments that enable space and ground systems missions. The role focuses on complying with U.S. government cybersecurity requirements, maintaining secure system baselines, and collaborating with engineering and cybersecurity teams. The position is fully on-site at the company’s Greenwood Village, Colorado office and has no direct reports.

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.
• U.S. citizenship.
• Active Top Secret clearance.
• Willingness to work full-time in the office in Greenwood Village, Colorado.
• Permanent authorization to work in the United States.

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 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 approach and ability 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 according to 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/software inventories.
• Ensure system resources are sanitized, archived, and disposed of in accordance with security plans.
• Provide technical inputs for ground assets supporting classified systems.
• Work with engineering and operations stakeholders to integrate cybersecurity requirements into space and ground assets throughout development and operations.
• Report security concerns and configuration changes that may affect system performance or accreditation to the ISSO/ISSM.

Benefits

• 100% employer-paid medical, dental, and vision insurance, subject to spousal surcharge.
• Company holidays, floating holidays, and sick time.
• Unlimited PTO.
• Generous 401(k) match.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level