Senior Linux SysAdmin & Team Lead – TS Clearance

SciTec; Aurora (CO); On-site; USD 149,000 - 184,000; Full time

Benefits offered by this job

401(k) match

Company paid HSA Medical insurance

Dental insurance

Vision insurance

Life insurance

Long-term Disability

Profit-sharing plan

Parental Leave

Generous PTO

Flexible work hours

Job summary

SciTec is seeking a senior Linux System Administrator to support secure, mission-focused programs. You will lead the system administrator group, install and harden RHEL environments, manage patches and backups, and coordinate with security teams to ensure compliance.

The role requires strong collaboration and hands-on problem solving in a closed, government-focused setting. Experience with virtualization, container platforms, and mixed Linux/Windows networking is essential.

Qualifications

• 8+ years of professional Linux administration experience.
• Active Top Secret clearance; ability to obtain/maintain Secret clearance.
• Experience with RHEL 8/9/10 servers/workstations and security baselines (STIG).
• Virtualization and container tech: VMware, Podman/Docker, OpenShift/Kubernetes.
• Networking in mixed Linux/Windows environments; strong communication skills.

Responsibilities

• Lead the System Administrator group; mentor and oversee operations.
• Install, configure, and maintain RHEL workstations/servers per baselines.
• Implement system security, hardening, backups, auditing; manage patches.
• Operate virtualization (VMware) and container ecosystems; maintain registries.
• Document configurations; collaborate with security and operations teams.

Skills

Linux system administration

Security awareness

Team collaboration

Detail-oriented

Strong communication

Education

Bachelor's degree in IT or related field

Tools

VMware

Podman

Docker

OpenShift/Kubernetes

Ansible

Bash/Python

GitLab CI/CD

Job description

SciTec is seeking a senior Linux System Administrator to support secure, mission-focused programs. You will lead the system administrator group, install and harden RHEL environments, manage patches and backups, and coordinate with security teams to ensure compliance.

The role requires strong collaboration and hands-on problem solving in a closed, government-focused setting. Experience with virtualization, container platforms, and mixed Linux/Windows networking is essential.