System Administrator

MANTECH•Virginia Beach, VA

3d•$62,400 - $103,700•Onsite

About The Position

MANTECH is seeking a motivated, career- and customer-oriented Systems Administrator to support the Advance Electronic Systems (AES) team and its customers in Virginia Beach, Virginia. This is an onsite position. The Systems Administrator serves as the point of contact for IT matters, including hardware and software setup, connectivity and data-access troubleshooting, answering user questions, and helping users access shared drives and devices. The role supports systems throughout their lifecycle, from initial hardware and software receipt through configuration, deployment, steady-state operations, and decommissioning. It includes designing and building secure system images, applying security baselines, validating readiness, supporting operational deployments, maintaining systems, and documenting configuration and lifecycle activities. The position requires a current, active DoD Secret security clearance. The projected compensation range is $62,400.00–$103,700.00. MANTECH’s benefits offerings may include health and life insurance, paid time off, holiday pay, short- and long-term disability, retirement and savings, learning and development opportunities, wellness programs, and optional benefit elections, depending on position.

Requirements

Bachelor’s degree in Information Technology, Computer Science, or a related field and 4 or more years of IT/systems administration experience; alternatively, 4 additional years of related experience may substitute for the degree.
Security+ CE certification.
ACAS Operator/Supervisor training.
Proficiency in Microsoft Office Suite, including Word, Excel, PowerPoint, Teams, and SharePoint.
Current, active DoD Secret security clearance.

Nice To Haves

Familiarity with network topology documentation in air-gapped environments.
At least 1 year executing the full SDLC in DoD environments.

Responsibilities

Execute the full System Development Life Cycle (SDLC), from initial receipt of hardware and software through decommissioning.
Plan system requirements by analyzing mission needs, hull-type variants, and Risk Management Framework (RMF) constraints; help define acceptance criteria and configuration baselines.
Design system architectures and Secure Host Baseline (SHB) images using Microsoft Deployment Toolkit (MDT), Windows Assessment and Deployment Kit (ADK), and Group Policy.
Develop PowerShell automation for naming conventions, policy enforcement, and post-build validation.
Build, test, and duplicate SHB images across hull types; apply DISA STIGs and SRGs using Evaluate-STIG and STIG Viewer, and verify mission-specific settings, peripherals, and software loads.
Conduct quality assurance testing, including functional, security, and performance validation; confirm STIG compliance, Nessus scan remediation, and DaRT recovery functionality.
Document test results, discrepancies, and corrective actions in configuration management records.
Create DaRT media using ADK PE and MDOP; coordinate imaging operations, provide on-site or remote deployment support, and conduct post-deployment validation.
Maintain systems through ACAS/Nessus scanning, patch management, trouble-ticket resolution, and vendor coordination for hardware and software faults.
Update Standard Operating Procedures, Fleet Advisory Messages, and lessons learned.
Retire and decommission systems, including data sanitization per DoD 5220.22-M, hardware disposition, and documentation closeout.
Provide direct IT support to the AES team and customers, including hardware and software setup, troubleshooting, answering user questions, and assisting with access to shared drives and devices.