HQ Systems Administrator — Enterprise Windows/Linux, AD & VMware

ManTech; Florida; On-site; USD 90,000 - 130,000; Full time

Job summary

MANTECH is seeking a motivated HQ Systems Administrator for our team in Doral, FL. You will install, configure, and support enterprise servers, manage AD, and maintain virtualization across HQ infrastructure.

Responsibilities include patch management, security compliance, performance monitoring, and cross-functional collaboration to ensure high system availability. A TS clearance and strong documentation skills are required.

Qualifications

• Bachelor’s degree in CS/IT/SE or related field with 5+ years of systems administration.
• Proven experience with Windows and Linux server OS, Active Directory, and virtualization.
• Experience with patch management, baseline configuration, and hardware maintenance.
• Strong troubleshooting of hardware, software, network, and access issues.
• Ability to document complex IT information and baselines.

Responsibilities

• Install, configure, maintain, and troubleshoot enterprise servers and virtualization.
• Manage AD structures, user accounts, and group policies across networks.
• Perform routine maintenance, patching, and security compliance checks.
• Monitor performance, storage, and network services to prevent bottlenecks.
• Collaborate with teams to maintain high system availability.
• Maintain configuration management records and operational inventories.
• Recommend process improvements for IT administration.

Skills

Windows Server

Linux Server

Active Directory

Virtualization

Patch Management

Documentation

Education

Bachelor’s degree in Computer Science, Information Technology, Systems Engineering, or related field

Master’s degree

Associate’s degree

High school diploma

Tools

ACAS

Job description

MANTECH is seeking a motivated HQ Systems Administrator for our team in Doral, FL. You will install, configure, and support enterprise servers, manage AD, and maintain virtualization across HQ infrastructure.

Responsibilities include patch management, security compliance, performance monitoring, and cross-functional collaboration to ensure high system availability. A TS clearance and strong documentation skills are required.