System Administrator - DoD Cloud & Linux Expert (Secret Clearance)

Cyber Security Jobs; Huntsville (AL); On-site; USD 70,000 - 126,000; Full time

Job summary

Leidos Defense Sensors is seeking a System Administrator to manage Linux, Windows, and cloud platforms, supporting missile defense projects within the BMD simulations portfolio.

The role emphasizes daily administration, security scanning, incident response, and collaboration with agile teams. Requires US citizenship and an active clearance. Onsite in North Alabama, with opportunities across related defense programs.

Qualifications

• Bachelor’s or Master’s degree in a relevant IT field.
• Experience with Linux systems (RHEL) and network services.
• Security+ or equivalent certification within 90 days of start.
• US Citizenship and active security clearance required.

Responsibilities

• Perform daily system administration and O&M in a complex physical/virtual environment.
• Monitor infrastructure and respond to hardware/software incidents; maintain docs.
• Execute IAVA responses and security scans per System Security Plans.
• Collaborate with ISSM and other admins; provide timely updates to users.

Skills

IaC (Ansible)

Azure/AWS

Linux administration

Security+

US Citizenship

Education

Bachelor’s degree

Master’s degree

Tools

Ansible

Azure

AWS

VMware

Nessus

Splunk

WSUS

Job description

Leidos Defense Sensors is seeking a System Administrator to manage Linux, Windows, and cloud platforms, supporting missile defense projects within the BMD simulations portfolio.

The role emphasizes daily administration, security scanning, incident response, and collaboration with agile teams. Requires US citizenship and an active clearance. Onsite in North Alabama, with opportunities across related defense programs.