Senior Linux & Cyber Systems Administrator

Foxhole Technology, LLC; Fort Meade, Northern (MD, KY); Hybrid; USD 12,000 - 140,000; Full time

Benefits offered by this job

Medical Insurance

Dental Insurance

Vision Insurance

Paid Time Off

Retirement Plans (401k, Roth, ESOP)“

Life Insurance

Disability Insurance

FSAs

Education assistance

Job summary

Foxhole Technology, LLC seeks an experienced Systems Administrator III for advanced support in a secure DoD environment. You will administer Linux-based systems, manage cyber sensing platforms, and ensure DoDIN mission readiness while maintaining DISA STIGs and RMF/NIST controls.

You will collaborate with cybersecurity, network, and engineering teams, implement patches, scripts, and automation, and help sustain critical DoD capabilities with a strong emphasis on security and reliability.

Qualifications

• Active Secret clearance required.
• DoD 8140/8570 IAT Level II certification (e.g. CompTIA Security+ CE).
• Minimum 8+ years in IT support, help desk, or systems administration.
• Strong Linux experience and scripting ability.
• Experience with DoD cybersecurity standards and RMF/NIST 800-53.

Responsibilities

• Perform day-to-day systems administration for enterprise and mission-critical IT environments.
• Monitor system health and troubleshoot issues; escalate complex problems.
• Plan and implement system updates and security patches per DoD requirements (DISA STIGs, IAVM).
• Support DoD cybersecurity, security hardening, and compliance needs.
• Develop and maintain system documentation and SOPs.
• Execute backup, recovery, and restoration procedures.
• Operate cybersecurity tools (HBSS, ACAS, SIEM) and related monitoring solutions.
• Administer Linux-based sensors and hardware (iDRAC, BluVector).
• Develop basic automation using Bash or Python to improve efficiency.
• Collaborate across teams to ensure availability and security of systems.
• Provide guidance to junior staff and improve operational processes.

Skills

Linux admin

Bash scripting

Python scripting

DoD compliance

Network security

Troubleshooting

Documentation

DevSecOps

Incident response

Education

BS degree (related field)

IAT Level II certification (DoD)

Tools

HBSS

ACAS

SIEM

iDRAC

BluVector

DISA STIGs

Job description

Foxhole Technology, LLC seeks an experienced Systems Administrator III for advanced support in a secure DoD environment. You will administer Linux-based systems, manage cyber sensing platforms, and ensure DoDIN mission readiness while maintaining DISA STIGs and RMF/NIST controls.

You will collaborate with cybersecurity, network, and engineering teams, implement patches, scripts, and automation, and help sustain critical DoD capabilities with a strong emphasis on security and reliability.