Linux​/Windows Systems Support Engineer II Security Clearance

Position: Linux/Windows Systems Support Engineer II with Security Clearance
We are seeking a highly capable System Administrator Level 2 to support implementation, troubleshooting, and maintenance of enterprise IT systems in a high-security environment. This role manages daily system operations for both Windows and UNIX/Linux platforms, provides Tier 1 and Tier 2 support, and ensures the reliability and performance of client/server, storage, and network devices. The SA will work directly with users, agency management, and technical teams to identify, diagnose, and resolve escalated issues.

Experience with AWS, Linux administration, Windows 10/11, Windows Server 2022, and scripting (Bash or similar) is strongly preferred.

Key Responsibilities System Support & Operations

• Support implementation, troubleshooting, and maintenance of IT systems.

• Manage daily operations of system configuration and maintenance.

• Monitor and support client/server, storage, network devices, and mobile systems.

• Optimize system operations and resource utilization; perform capacity analysis.

• Install, configure, and manage Windows 10/11, Windows Server 2022, and UNIX/Linux systems.

• Load, maintain, troubleshoot, and enhance operating system software. Tier 1 & Tier 2 Support

• Provide Tier 1 Help Desk support for initial problem identification and user assistance.

• Provide Tier 2 escalation support for complex diagnostics and issue resolution.

• Deliver detailed analysis and feedback for escalated tickets to management and customers.

• Support dispatch system and hardware-related trouble calls and follow through to resolution.

• Communicate status updates and escalation details to agency leadership and internal stakeholders. System Configuration & Enhancement

• Configure and maintain UNIX and Windows operating systems, ensuring system integrity.

• Configure network components and implement OS-level enhancements for system reliability.

• Support system performance improvements and apply patches or updates as needed.

• Assist users in accessing and utilizing IT systems effectively. Diagnostics, Troubleshooting & Scripting

• Perform in-depth troubleshooting across diverse IT systems.

• Use Bash or other scripting languages to enhance automation and support operational tasks.

• Diagnose and resolve system issues involving servers, operating systems, storage, or network connectivity.

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

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

• 10 years of experience as a System Administrator supporting similar scope and complexity

• Bachelor’s degree in a technical field

• Five additional years of System Administration experience may substitute for the degree requirement Preferred

Skills:

• Experience with AWS environments

• Intermediate Linux administration

• Windows 10/11 and Windows Server 2022

• Bash or similar scripting

• Familiarity with enterprise monitoring and diagnostic tools