Senior IT Systems Engineer - Security & Virtualization

M.C. Dean, Inc.; Falls Church, Northern (VA, KY); Hybrid; USD 104,000 - 143,000; Full time

Job summary

M.C. Dean, Inc. in Falls Church, VA is seeking a System Engineer 3 to support the SES unit, focusing on design, deployment, and cybersecurity of complex infrastructure.

Ideal candidates have active Secret clearance, US citizenship, and hands-on experience with VMware ESXi, Windows Server, MECM, and AD, plus scripting skills in PowerShell or Python. This is a full-time on-site role supporting critical national security projects.

Qualifications

• U.S. Citizenship and active Secret Clearance required.
• Bachelor’s degree in CS/EE/IT or related field.
• Experience with virtual infrastructure technologies and IT security.

Responsibilities

• Gather requirements, architect solutions, and communicate with stakeholders.
• Analyze, deploy, and optimize system infrastructure and security.
• Develop designs and architectural changes for physical/logical environments.
• Apply security updates and ensure posture across systems.

Skills

Secret clearance

U.S. citizenship

Analytical thinking

Team collaboration

Communications

Education

Bachelor's degree in CS/EE/IT

Tools

VMware ESXi / vSphere

Windows Server

MECM

Active Directory

DNS/DHCP

PowerShell

Python

Job description

M.C. Dean, Inc. in Falls Church, VA is seeking a System Engineer 3 to support the SES unit, focusing on design, deployment, and cybersecurity of complex infrastructure.

Ideal candidates have active Secret clearance, US citizenship, and hands-on experience with VMware ESXi, Windows Server, MECM, and AD, plus scripting skills in PowerShell or Python. This is a full-time on-site role supporting critical national security projects.