Systems Admin II – Windows​/Linux & Juniper with Security Clearance

Seeking a Level 2 System Administrator to deliver advanced support and optimization across Windows, Linux, and enterprise network infrastructures. This role encompasses Tier 1 and Tier 2 diagnostic operations, complex system troubleshooting, infrastructure configuration and maintenance, and high level escalation management within mission critical environments. Core Responsibilities
• Provide support for IT system implementation, troubleshooting, and maintenance

• Manage daily configuration and operations of client/server/storage/network systems

• Perform Tier 1 & Tier 2 problem identification, diagnosis, and resolution

• Monitor day to day operations and resolve issues across all devices (servers, networks, mobile)

• Support escalation workflows and communicate status to internal stakeholders

• Configure and manage UNIX/Linux and Windows operating systems

• Install and troubleshoot OS software; maintain integrity of network components

• Optimize system operations; conduct system capacity planning

• Provide detailed analysis and feedback for escalated tickets

• Support dispatch systems and hardware issues throughout resolution

Minimum Qualifications
• Active TS/SCI with Full Scope Polygraph (must already be held)

• IAT Level II certification (Security+ CE, GSEC, CySA+, CCNA Security, or GICSP)

• 10+ years System Administrator experience (or 5 additional years in place of degree)

• Bachelor’s degree in a technical discipline

• Windows 11 hardware troubleshooting

• Linux experience with Ubuntu and Fedora

• Networking experience with Juniper

• Windows Server management (DNS, DHCP, AD/GPO, RDS, Hyper V)

• Power Shell scripting experience

Preferred Qualifications
• Experience with Cisco and Dell networking systems

• Ability to perform switch code upgrades (Cisco & Juniper)

• Strong Windows/Linux troubleshooting skills

• Familiarity with HP Device Manager or similar RMM tools

• Experience with Splunk, Zabbix, Syslog ng