Senior Windows Server Engineer — On-Site DC & Security

Eliassen Group; Washington (District of Columbia); On-site; Confidential; Full time

Job summary

Eliassen Group is seeking a Senior Server Windows Engineer to provide systems administration, engineering, and migration support for a large Windows server estate across on‑premises and cloud environments. The role is on-site at Washington, DC, with a focus on vulnerability remediation, patching, automation, and documentation.

The position requires a United States citizen or permanent resident with active Public Trust clearance and offers W‑2 benefits plus potential conversion to FTE.

Qualifications

• Minimum 10 years administering and managing Windows servers, systems, and cloud infrastructure.
• Experience managing 2000+ servers across multiple field locations.
• Proven leadership of cross‑team troubleshooting calls using a multi‑discipline approach.
• Extensive knowledge of multi‑vendor server operating systems.
• Senior‑level MS Server Administration.
• Senior‑level scripting with MS Graph/PowerShell and VBScript.
• Senior‑level experience with Windows Server 2019-2022.
• Senior‑level VMware vSphere.
• Intermediate‑level Active Directory / Entra.
• Strong skills resolving failed Windows update installations.
• Strong knowledge of AD Group Policy and applying security posture via GPOs.
• Experience with SCCM.
• Experience with root cause analysis, risk identification, and mitigation.
• Self‑starter with strong problem solving and communication skills.

Responsibilities

• Provide full-time on-site support at DOT HQ in Washington, DC, with coverage ending between 5pm and 7pm.
• Participate in a 24x7 on‑call escalation rotation every 2-3 months.
• Identify opportunities to improve and automate service delivery through scripting.
• Perform security hardening, patching, and server certificate updates.
• Run and analyze vulnerability scans for an enterprise of 2000+ Windows servers.
• Maintain standard operating procedures and engineering documentation.
• Provide escalation support to system administrators and conduct root cause analysis for outages.
• Recognize and elevate risks, issues, and concerns.
• Analyze vulnerability reports, define remediation ownership, and prioritize critical items.
• Coordinate and implement vulnerability remediations across teams.
• Harden Windows OS per NIST policy, including TLS and cipher suites.
• Assist with POA&Ms for long‑lead remediation items.
• Partner with SCCM/Deployment teams for routine and bulk patching and reporting.
• Provide on‑call support and manage ticket queues.
• Drive continuous improvement of processes and documentation.
• Support new enterprise systems and engineering solutions.
• Create and maintain domain technology documentation for installation, configuration, and troubleshooting.

Skills

Windows Server Admin

Leadership

PowerShell

Scripting

Problem solving

Communication

ITSM

On-call

Tools

Tenable Nessus

Qualys WAS

Invicti

BigFix

SCCM

VMware vSphere

Intune/MECM

Dell OpenManage Enterprise

Power BI

Job description

Eliassen Group is seeking a Senior Server Windows Engineer to provide systems administration, engineering, and migration support for a large Windows server estate across on‑premises and cloud environments. The role is on-site at Washington, DC, with a focus on vulnerability remediation, patching, automation, and documentation.

The position requires a United States citizen or permanent resident with active Public Trust clearance and offers W‑2 benefits plus potential conversion to FTE.