Senior Linux System Administrator - DoD Cross-Domain

Booz Allen Hamilton; Columbia (MD); On-site; USD 78,000 - 176,000; Full time

Job summary

Booz Allen Hamilton is seeking a Senior System Administrator to design, deploy, and maintain Cross Domain Solutions for a DoD-focused enterprise environment. You will optimize security, stability, and performance while ensuring compliance with security controls and DoD requirements.

As a Linux-focused administrator, you will mentor teammates, translate metrics into actionable insights, and drive network modernization to meet critical mission needs.

Qualifications

• 3+ years of experience with Red Hat Enterprise Linux or CentOS.
• Experience with Git.
• Experience managing virtual machines and VMware ESXi.
• Knowledge of Linux firewalls, Linux RPMs, networking configuration, and DNS.
• TS/SCI clearance with a polygraph.
• Bachelor's degree.
• Ability to obtain DoD 8570.1 IAT Level II Compliant Certification within 60 days of start date.

Responsibilities

• Design, deploy, and maintain Cross Domain Solutions for an enterprise environment.
• Improve platform security, stability, and reliability while complying with security controls.
• Monitor performance; turn metrics into insights and communicate them to customers.
• Lead and mentor the team; develop new methodologies and architectures for the network.

Skills

Red Hat Enterprise Linux / CentOS

Git

Linux networking

DNS

TS/SCI clearance

IAT Level II prep

Education

Bachelor's degree

Tools

Salt

Ansible

Puppet

Terraform

PowerShell

Chef

Job description

Booz Allen Hamilton is seeking a Senior System Administrator to design, deploy, and maintain Cross Domain Solutions for a DoD-focused enterprise environment. You will optimize security, stability, and performance while ensuring compliance with security controls and DoD requirements.

As a Linux-focused administrator, you will mentor teammates, translate metrics into actionable insights, and drive network modernization to meet critical mission needs.