Linux System Administrator

Zachary Piper Solutions is seeking a Linux System Administrator to support a company focused on mission‑critical government operations with a strong emphasis on cybersecurity, compliance, and network reliability. This position is on‑site in San Antonio, TX
. The Linux System Administrator will own the full lifecycle management of Linux systems while supporting auditing, monitoring, and troubleshooting in a high‑security environment. This is a mission‑driven opportunity to play a key role in maintaining systems aligned with enterprise‑level visibility.

• Manage and maintain RHEL‑based Linux systems, ensuring performance, security, and compliance with NSA auditing and logging requirements
• Administer and support OpenNMS Meridian for monitoring, including setup of distributed monitoring, thresholds, and alarms
• Perform advanced troubleshooting across Linux, network, and Windows environments in collaboration with Tier 1–3 teams
• Implement and manage logging, auditing, and automation using tools such as Splunk
• Support system lifecycle management including patching, configuration, documentation, and ATO accreditation processes

• 3+ years of experience in Linux system administration within secure or enterprise environments
• Strong experience with RHEL, systemd, package management, kernel tuning, firewall tools (firewalld/iptables), and OpenNMS
• Proficiency in CLI‑based troubleshooting, networking fundamentals, Active Directory, DNS/DHCP, and basic scripting (Bash/Python)
• Bachelor’s degree in IT, Computer Science, or a related field (or equivalent experience)
• Active Secret clearance and CompTIA Security+ certification required

• Salary Range:
  depending on experience
• Full Benefits Package: PTO, Paid Holidays, Medical, Dental, Vision, 401K, Tuition Reimbursement, Sick leave as required by law