IT Systems Administrator I (Windows/Linux)

Location: Arlington, Texas, United States; office-based work in secure closed areas with domestic and international travel up to 50% of the year.

Company

hirify.global develops digitally immersive training and mission-readiness solutions for defense, security, and civil aviation customers.

What you will do

• Build, document, configure, maintain, and monitor mixed Windows/Linux closed-room infrastructures and software development environments.
• Administer Linux, Windows, Windows Server, VMware, networks, infrastructure hardware, operating systems, and infrastructure applications.
• Create, test, update, and execute automated and semi-automated procedures for system deployment and configuration at internal and customer sites.
• Support infrastructure reliability, availability, technology lifecycle recommendations, and technical troubleshooting for engineers and other teams.
• Apply system hardening, patch management, audit, and security practices aligned with DoD cybersecurity requirements, RMF, NIST 800-53, and DISA STIGs.

Requirements

• Minimum 5 years of related experience in cybersecurity and system administration.
• BS/BA in engineering, computer science, information technology, or a related discipline.
• Experience with Linux administration, Windows administration, Windows Server, VMware, network administration, hardware, and command-line tools.
• Knowledge of event, audit, and syslog analysis; TCP/IP networking; and managed switch and router setup.
• Experience with scripting languages such as Bash, CSH, Python, and PowerShell.
• Advanced problem-solving, attention to detail, and strong communication skills for working with peers, vendors, and other teams.
• Must be able to obtain and maintain a DoD Secret/Personal Security Clearance.
• Only U.S. citizens are eligible due to U.S. Government contract requirements.
• Must be able to obtain and maintain CompTIA Security+ certification and comply with DoD 8140.03 requirements, such as CISSP, Security+, and an operating-system certification.

Nice to have

• Active DoD security clearance and active CompTIA Security+ certification or equivalent.
• Advanced degree in engineering, computer science, information technology, or a related discipline.
• Windows/Linux integration, domain controller and Group Policy management, NAS/SAN/NFS storage, Cisco, HP/Aruba, and Juniper network administration.
• Automated operating-system deployment, configuration management, GitHub, ClearCase, Git, Bitbucket, centralized auditing, and centralized patching such as WSUS.
• System hardening using STIGs; vulnerability scanning with ACAS/Nessus and SCAP; and SIEM tools such as Splunk or SolarWinds SEM.
• Relevant certifications including RHCSA, Windows Server Hybrid Administrator Associate, CISSP, and Security+.

Culture & Benefits

• Comprehensive benefits and flexibility supporting work-life balance.
• Respectful, safe, and inclusive work environment with equal employment opportunity.
• Opportunities for professional development, recognition, advancement, initiative, and decision-making.
• Regular office work with occasional access to rack-mounted hardware and secure closed areas.
• Full-time regular employment; reasonable accommodations are available during employment and recruitment.