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Systems Administrator-FT Belvoir

Apex Systems, Fort Belvoir, VA, United States


Overview

Job#: 3029150
Job Description: Systems Engineer
Location: Ft. Belvoir, VA
Clearance required: TS/SCI with CI or FS POLY
Shift: 24x7 environment with rotating shifts
In this role you will

Have growth opportunities where you can make a difference to a very important mission.
Join one of the portfolio's Agile (scrum) teams.
Be involved in investigation into ad hoc issues and analyze and resolve complex mission problems.
Responsibilities

Own enterprise systems end-to-end, from deployment through sustainment
Administer and support Linux (primarily RHEL) and Windows Server environments
Manage and maintain virtualized infrastructure (VMware‑centric)
Perform routine and time-sensitive patching, updates, and vulnerability remediation
Administer Active Directory and core domain services (DNS, GPO, permissions)
Identify, troubleshoot, and resolve system and infrastructure issues impacting availability or security
Execute and document changes in accordance with compliance and operational standards
Produce and maintain technical documentation, SOPs, and system inventories
Communicate system health, risks, and remediation plans clearly to stakeholders
Support environments requiring high availability, security controls, and operational discipline
Qualifications

Security+ or CISSP Certification
Hands-on experience administering Linux (RHEL) and Windows systems
Experience managing VMware-based virtualized environments
Understanding of enterprise infrastructure operations
Experience operating in secure or regulated environments (DoD, IC, government, or equivalent)
Familiarity with security compliance practices (e.g., STIGs, vulnerability scanning, remediation)
Ability to troubleshoot across systems, virtualization, and basic networking layers
Comfortable working independently and owning systems without direct oversight
Nice to Have Skills (but not required)

Scripting or automation (Bash, PowerShell)
SCCM, Intune, Satellite, or similar management tooling
Basic to intermediate networking experience (routing, switching, DNS, DHCP)
Prior work in classified or mission-critical operational environments
Schedule

Four teams necessary to cover 24/7/365. Alternating between: Day shift 700am-700pm, Night shift 700pm-700am.

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