Linux Systems Administrator - TS/SCI REQUIRED

TEKsystems

1d•Onsite

About The Position

Seeking a Linux Administrator to support the DTRA I3TS Infrastructure Services team in maintaining and optimizing the Linux production environment. This role is responsible for sustaining Linux servers as well as the conceptualization, design, development, and implementation of new Linux capabilities. The administrator will work as part of the DTRA Systems Administration team, following ITIL best practices, while also operating independently on assigned tasks. This position supports the full service lifecycle—from design and development through production—building and deploying Linux-based systems in a virtualized environment. The ideal candidate is familiar with system automation technologies, basic database administration and tuning, and demonstrates strong problem-solving skills in a complex environment. Effective communication with both technical team members and customers is essential.

Requirements

TS/SCI REQUIRED
Familiarity with system automation technologies
Basic database administration and tuning
Strong problem-solving skills in a complex environment
Effective communication with both technical team members and customers
DoD 8570 IAT Level II or III (e.g., Security+ CE, CASP+, CISSP)
Linux system administration

Nice To Haves

Red Hat Certified System Administrator (RHCSA)
Systems or network administration experience in Windows Server and/or Cisco environments
Familiarity with automated call distribution systems
Process-based certifications or frameworks such as ITIL, HDI, COBIT, Lean Six Sigma, or Six Sigma

Responsibilities

Provision servers and environments
Manage user access
Perform full lifecycle management of Linux servers, including installation, configuration, and patching in production and test environments
Develop and maintain automation scripts using Unix shell scripting and Ansible playbooks
Perform security patching, upgrades, and system hardening to meet compliance standards and remediate vulnerabilities
Monitor system performance and respond to alerts
Establish and maintain NTP services in production environments
Maintain satellite servers for software releases and patch distribution
Ensure compliance with DoD STIGs and security best practices
Support and administer web servers and certificates
Work independently in a fast-paced environment while managing multiple projects
Lead projects within assigned areas of responsibility
Communicate across internal technical teams and with client stakeholders
Provide support during standard M–F business hours, with on-call, extended-hour, and weekend support as required by mission or emergency needs
Create, maintain, and update technical documentation and standard operating procedures