Mission-Critical Systems Administrator — DoD Secret Clearance

SteelGate LLC; Hawaii; On-site; USD 98,000 - 130,000; Full time

Benefits offered by this job

401(k) matching

Dental insurance

Health insurance

Paid time off

Professional development assistance

Vision insurance

Job summary

STEELGATE LLC seeks an experienced Systems Administrator to provide enterprise IT support for the Government IT environment across multiple locations, including Hawaii.

The role covers installation, configuration, monitoring, maintenance of servers, AD, 365, Azure, and virtualization platforms to keep IT services secure and mission-ready. Collaboration with Cybersecurity, Systems Engineers, and Support staff is essential, with patching, hardening, and documentation responsibilities.

Qualifications

• 4–6+ years of progressively responsible systems administration or enterprise IT infrastructure experience.
• Active DoD Secret clearance required.
• Experience with Windows Server environments, Active Directory, DNS, DHCP, and Group Policy.
• Experience with VMware or enterprise virtualization.
• Experience with Microsoft 365 and Microsoft enterprise technologies.
• Experience performing patching, upgrades, and maintenance.
• Familiarity with cybersecurity hardening and vulnerability remediation.
• Ability to document SOPs and configuration records.

Responsibilities

• Install, configure, administer, maintain, monitor, and troubleshoot physical and virtual servers and enterprise services.
• Monitor and troubleshoot DNS, DHCP, NTP, SNMP, HTTP/HTTPS, SSH, LDAP/LDAPS, and SMTP.
• Administer Windows Server environments and Active Directory/Group Policy.
• Support Microsoft 365 and Microsoft configurations; manage SCCM/MECM.
• Support VMware VDI and virtualization infrastructure.
• Perform routine system health checks and patching in line with cybersecurity directives.
• Maintain documentation, SOPs, and troubleshooting guides.
• Coordinate with Cybersecurity and Systems/Network Engineers to resolve issues.

Skills

Windows Server

Active Directory

PowerShell

VMware

Microsoft 365

Azure

Networking

Troubleshooting

Documentation

Analytical thinking

Education

Bachelor's degree in Computer Science/Information Technology

Tools

SCCM/MECM

VMware vSphere

Microsoft Configuration Manager

ServiceNow

Job description

STEELGATE LLC seeks an experienced Systems Administrator to provide enterprise IT support for the Government IT environment across multiple locations, including Hawaii.

The role covers installation, configuration, monitoring, maintenance of servers, AD, 365, Azure, and virtualization platforms to keep IT services secure and mission-ready. Collaboration with Cybersecurity, Systems Engineers, and Support staff is essential, with patching, hardening, and documentation responsibilities.