Junior Systems Administrator

KBR•Mooresville, AL
•$60,000 - $100,000

About The Position

The Junior Systems Administrator serves as a frontline technical support resource for end users and an entry-level member of the systems administration team supporting classified and unclassified mission environments. The role focuses on service desk support, customer service, workstation and account administration, and routine system maintenance across Windows and Linux environments. The administrator resolves user issues promptly and professionally while developing hands-on experience in enterprise systems administration, cybersecurity compliance, and infrastructure operations under the guidance of senior administrators and engineers. The position works closely with system administrators, infrastructure engineers, cybersecurity personnel, and end users to help ensure reliable, secure, and responsive IT services that support mission execution. The role is within KBR’s Missile, Aviation, and Ground Systems division, which delivers mission engineering solutions for critical U.S. Army programs.

Requirements

  • U.S. citizenship.
  • Active Secret clearance or ability to obtain one.
  • Experience providing service desk or end-user technical support.
  • Working knowledge of Windows or Linux operating systems and basic troubleshooting of hardware, software, and network connectivity issues.
  • Basic understanding of Active Directory, user account management, and file and folder permissions.
  • Ability to follow documented procedures and accurately document technical work.
  • Positive attitude and strong customer service, communication, organizational, and problem-solving skills.
  • Willingness to learn new technologies and take on increasing technical responsibility.

Nice To Haves

  • CompTIA, Microsoft, Linux, or other relevant industry certifications.
  • DoD 8140 / 8570 IAT Level II certification, such as Security+ CE.
  • Experience supporting Department of Defense IT environments.
  • Experience with RHEL or other Linux distributions, including command-line administration.
  • Familiarity with Windows Server, Group Policy, and DNS/DHCP fundamentals.
  • Experience with ServiceNow, Remedy, or comparable IT service management ticketing platforms.
  • Experience with workstation imaging and deployment tools such as MECM/SCCM, WDS, or Kickstart.
  • Familiarity with DISA STIGs, RMF, and basic vulnerability management concepts.
  • Familiarity with PowerShell, Bash, or Python scripting.
  • Familiarity with basic networking concepts, including TCP/IP, VLANs, and switching.

Responsibilities

  • Provide Tier 1 and Tier 2 service desk support through tickets, phone, email, and walk-up requests, escalating complex issues to senior staff as needed.
  • Install, configure, image, and troubleshoot Windows and RHEL workstations, laptops, servers, and peripherals.
  • Create, modify, and disable user accounts, groups, and permissions in Active Directory and related identity services.
  • Support CAC/PKI authentication, password resets, account lockouts, and user access issues.
  • Support new user onboarding and departing user offboarding, including equipment issuance, account provisioning, and access removal.
  • Perform routine system maintenance, including patching, software installation, and updates under senior administrators’ direction.
  • Assist with DISA STIG configurations, vulnerability remediation, and security controls supporting classified environments.
  • Assist with rack installation, cabling, equipment moves, and physical infrastructure tasks.
  • Document ticket resolutions, procedures, and knowledge base articles to improve support consistency.
  • Participate in on-the-job training, mentorship, and professional development in systems administration, networking, and cybersecurity.
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