Senior Linux Sys Admin – DoD Cross-Domain Services

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 enterprise environment. You will help modernize the network, ensure security controls, and improve system availability.

You will lead with Linux expertise, IaC tooling, and a strong background in security clearance requirements, while mentoring team members and guiding best practices for mission-critical networks.

Qualifications

• 3+ years of experience with Red Hat Enterprise Linux or Rocky.
• 3+ years of experience with Proxmox.
• Experience with Git.
• Experience managing systems using Infrastructure-as-Code technologies, including Salt, Ansible, Puppet, PowerShell, Chef, or Terraform.
• Knowledge of Linux firewalls, Linux RPMs, networking configuration, and DNS.
• TS/SCI clearance with a polygraph.
• Bachelor’s degree in CS or IT and 5+ years of experience with systems or network administration, or 10+ years of experience with systems or network administration in lieu of degree.
• Ability to obtain a 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 that supports critical cybersecurity mission customers.
• Improve infrastructure using the latest technology and implementation strategies.
• Recommend technologies and approaches to improve platform performance and security, comply with security controls, and achieve system availability and reliability requirements.
• Provide customers insight into their network through monitoring and performance management.
• Identify problem areas and opportunities for improvement in a mission critical network; mentor teammates and share expertise.

Skills

Linux system administration

Infrastructure-as-Code

Security & compliance

DoD/CS contractor knowledge

Education

Bachelor’s degree in CS or IT

10+ years of relevant experience in lieu of degree

Tools

Salt

Ansible

Puppet

PowerShell

Chef

Terraform

Job description

Booz Allen Hamilton is seeking a Senior System Administrator to design, deploy, and maintain cross-domain solutions for a DoD enterprise environment. You will help modernize the network, ensure security controls, and improve system availability.

You will lead with Linux expertise, IaC tooling, and a strong background in security clearance requirements, while mentoring team members and guiding best practices for mission-critical networks.