Linux System Administrator
About The Position
The Linux System Administrator works as part of a cross-functional team supporting Linux-focused environments within secure labs. The role covers Tier 1 through Tier 3 support, from frontline service requests and initial troubleshooting to advanced engineering and complex issue resolution. The administrator implements and maintains Linux solutions, server hardware, virtualization platforms, networking and storage technologies, and supports updates and operational stability. The position also focuses on security hardening and compliance, including use of OpenSCAP, implementation of DISA STIG and NIST 800-53 security baselines, and automated hardening and compliance remediation across enterprise assets. The administrator contributes to automation and configuration management, participates in process improvement, and collaborates with customers, peers, domestic U.S. DT peers, and Engineering leadership. This is a contract position based fully onsite in Richardson, Texas. An active Top Secret clearance and an active DoD 8570/8140 IAT Level II certification or higher are required.
Requirements
- University degree and at least 2 years of relevant experience; an advanced degree in a related field; or 5 or more years of relevant experience in lieu of a degree.
- Professional experience supporting Linux systems administration, including RHEL and Ubuntu.
- Experience with server administration, virtualization technologies such as VMware, networking fundamentals, and compliance frameworks including NIST 800-53 and DISA STIG.
- Active DoD 8570/8140 IAT Level II certification or higher, such as CompTIA Security+.
- Active Top Secret Government Security Clearance.
Nice To Haves
- OpenSCAP and security hardening experience.
- Ansible experience; Ansible is heavily preferred.
- Experience in secure labs or professional environments.
- Linux administration certifications such as RHCSA, RHCE, or Ubuntu certifications.
- Automation or configuration management certifications such as Ansible or Puppet.
- Security certifications such as Security+ or CISSP.
Responsibilities
- Respond to Linux service requests, perform initial triage, gather required information, and provide first-line troubleshooting or escalation.
- Implement, configure, and maintain Linux solutions, server hardware, virtualization platforms, and networking and storage technologies.
- Deploy updates and support operational stability efforts.
- Resolve complex technical issues, handle advanced system escalations, and drive cross-functional resolutions across support levels.
- Use OpenSCAP and implement DISA STIG and NIST 800-53 security baselines.
- Execute automated system hardening and compliance remediation across enterprise assets.
- Contribute to automation, configuration management, and operational stability initiatives using industry-standard security tools.
- Participate in improving internal processes using frameworks such as LEAN, ACE, and CORE.
- Build working relationships with customers and peers, foster connections with domestic U.S. DT peers, and communicate with Engineering leadership to provide ROI based on project performance.
Benefits
- Medical insurance
- Dental insurance
- Vision insurance
- Critical illness, accident, and hospital coverage
- 401(k) retirement plan with pre-tax and Roth post-tax contributions
- Voluntary life and AD&D insurance for the employee and dependents
- Short- and long-term disability
- Health Spending Account (HSA)
- Transportation benefits
- Employee Assistance Program
- Time off/leave, including PTO, vacation, or sick leave, subject to eligibility and applicable terms
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What This Job Offers
Career Level
Mid Level
