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# Principal Systems Administrator

- **Company:** Indotronix Avani Group
- **Location:** Aurora, CO, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Active Directory, Cyber Security, Linux, RAID, VMware ESX Servers, Identity and Access Management, Red Hat Enterprise Linux, Microsoft SharePoint, Software Vulnerability Management, Nessus, Wikis, Data Management, National Industrial Security Program Operating Manual (NISPOM), Firewall Services Module
- **Published:** October 5, 2026
- **Apply:** https://candidateportal.ceipal.com/job-details/k7w-Vsc36TRA-FTKEVwg-OUTXwrKF1es_cLlLYQ19-s

## About the Role

Ability to obtain and maintain Top Secret (TS/SCI) clearance with Full Scope Polygraph

 - Expertise in Linux (Red Hat Enterprise Linux) and Windows server administration
 - VMware administration experience
 - Proficiency with NAS storage device management (NetApp ONTAP preferred)
 - DoD 8570 IAT Level 2 certification (e.g., Security+ CE) or eligible to obtain within 6 months
 - Familiarity with classified environment system administration

Preferred Skills

 - Advanced degree in a STEM field
 - 5+ years Red Hat Enterprise Linux (RHEL) administration in SCI environments
 - Experience with NISPOM, DCID 6/3-ICD 503, RMF, STIG, JAFAN, or JSIG frameworks
 - Enterprise storage, RAID-levels, vulnerability management (Tenable/Nessus)
 - Identity management, Active Directory, Windows 10/Server, GPOs
 - VMware ESXi (6.x+), host-based firewall configuration, documentation (Wiki/SharePoint)
 - Current certifications: Security+ CE, CASP, CISSP, or similar, Must have a DOD Full Scope Polygraph Clearance

## Description

Join a high-impact technical team as a Sr Principal Systems Administrator supporting mission-critical government programs in Aurora, Colorado. This onsite position offers the opportunity to work with advanced Linux, Windows, VMware, and NAS technologies while maintaining and enhancing secure multi-user computing environments. Contribute to national security efforts and collaborate with talented engineers in a dynamic, growth-focused workplace., Administer and maintain Linux (Red Hat Enterprise Linux) and Windows systems in classified environments

 - Manage VMware technologies and Network Attached Storage devices (NetApp ONTAP preferred)
 - Ensure system performance, reliability, and compliance through proactive enhancements, patching, and configuration
 - Coordinate with engineering and technical teams to support multi-user system operations
 - Implement and monitor backup, recovery, file systems, disk space, and virus protection measures
 - Oversee user and computer accounts, permissions, and security access lists
 - Maintain audit logs and security documentation as directed by the ISSM
 - Support Cyber Security initiatives and assist with security vulnerability remediation
 - Report on project status and contribute to both recurring and ad-hoc system administration tasks