Senior Windows/Linux & VMware Systems Engineer (DoD)

SITEC Consulting, LLC.; Maryland; On-site; USD 90,000 - 130,000; Full time

Job summary

SITEC Consulting, LLC. is seeking a mid- to senior-level Windows/Linux/VMware Systems Administrator to support a government software hosting environment.

The role encompasses systems engineering, virtualization, cybersecurity, and infrastructure support for mission-critical information systems. The ideal candidate will demonstrate hands-on experience with Windows and Linux administration, VMware, and RMF compliance per DoD guidance.

Qualifications

• Active Secret clearance with ability to obtain Top Secret (interim TS may be required).
• U.S. Citizen.
• Mid-level: ~5+ years in systems administration/infrastructure.
• Senior-level: ~8+ years in systems administration/infrastructure.
• Experience administering Windows Server or Linux in an enterprise.
• Experience with VMware virtualization and virtual infrastructure.
• RMF compliance: vulnerability scanning, STIG implementation, remediation, continuous monitoring.
• Experience installing, configuring, maintaining and troubleshooting physical and virtual servers.

Responsibilities

• Design, implement, and maintain engineering solutions for government hosting facility requirements.
• Deploy, configure, administer, and maintain physical/virtual infrastructure (servers, VMs, containers, workstations).
• Perform routine maintenance, upgrades, patching, and config changes across Windows and Linux.
• Administer VMware virtualization and virtual networking environments.
• Diagnose and resolve hardware, OS, software, networking, and app issues.
• Manage Active Directory users/groups/permissions/authentication/access controls.
• Deploy and troubleshoot enterprise software applications.
• Develop and test backup, restoration, disaster recovery procedures.
• Secure information systems in accordance with DoD cybersecurity guidance.
• Support RMF activities: vulnerability scanning, STIGs, remediation, evidence collection, monitoring.
• Maintain configuration baselines and security posture via reviews and reporting.
• Provide networking support for on-prem infrastructure.
• Create/maintain technical documentation and SOPs.
• Provide technical guidance to customers, developers, and stakeholders.
• Participate in Agile/DevSecOps projects and infrastructure modernization.
• Mentor junior admins and provide leadership.

Skills

Active Secret clearance

U.S. Citizenship

5+ years experience

8+ years experience

Windows Server

Linux

VMware

DoD RMF

Risk Management

AD administration

Tools

Windows Server

Linux

VMware

Active Directory

Nessus/ACAS

Job description

SITEC Consulting, LLC. is seeking a mid- to senior-level Windows/Linux/VMware Systems Administrator to support a government software hosting environment.

The role encompasses systems engineering, virtualization, cybersecurity, and infrastructure support for mission-critical information systems. The ideal candidate will demonstrate hands-on experience with Windows and Linux administration, VMware, and RMF compliance per DoD guidance.