Senior Linux System Engineer — TS/SCI Poly Clearance

Cornerstone Defense; Annapolis (MD); On-site; USD 190,000 - 210,000; Full time

Benefits offered by this job

Medical, Dental and Vision Plans

401(k)

HSA and FSA options

Tuition Reimbursement and Training

Life and Disability Insurance

Job summary

Cornerstone Defense is seeking a Senior Linux System Administrator/System Engineer to support a high-visibility mission environment. The role focuses on expert administration, engineering, and sustainment of Linux-based systems across secured facilities, with emphasis on CentOS/RHEL, JBoss/WildFly, virtualization, automation, and security compliance.

You will collaborate across mission teams to maintain system reliability, availability, and compliance in a fast-paced setting.

Qualifications

• 10+ years' experience administering Linux in mission environments.
• CentOS/RHEL administration experience.
• Installation, configuration, and sustainment of JBoss/WildFly.
• VMware VM creation, configuration, and operations.
• CompTIA Security+ certification required.

Responsibilities

• Administer and engineer Linux-based systems across secure facilities.
• Support and sustain mission-critical environments to ensure reliability and compliance.

Skills

Linux System Administration

Oracle Database Design

JBoss/WildFly Administration

VMware

Security+ Certification

Automation with Ansible

Scripting (Shell/Python)

Tools

Red Hat Ansible

VMware vSphere

Job description

Cornerstone Defense is seeking a Senior Linux System Administrator/System Engineer to support a high-visibility mission environment. The role focuses on expert administration, engineering, and sustainment of Linux-based systems across secured facilities, with emphasis on CentOS/RHEL, JBoss/WildFly, virtualization, automation, and security compliance.

You will collaborate across mission teams to maintain system reliability, availability, and compliance in a fast-paced setting.