Systems Administrator (Linux/Windows) — RMF/TS/SCI

L3Harris Technologies; Waco (TX); On-site; USD 100,000 - 140,000; Full time

Job summary

L3Harris Technologies is seeking a highly skilled System Administrator to support Linux and Windows servers in a Department of Defense‑related environment in Waco, TX. The role emphasizes AD account management, policy updates, and reporting.

Responsibilities include security policy enforcement, system updates, backups, RMF compliance with eMASS or Xacta, monitoring logs, and travel up to 25%. Requires Security+ or DoD 8140 IAT II, PowerShell or Bash, and TS/SCI clearance.

Qualifications

• Bachelor’s Degree and 4+ years of related experience; graduate degree preferred.
• Strong Active Directory management and security policy experience.
• Security+ or DoD 8140 IAT Level II certification.
• Experience with PowerShell and/or Bash scripting.
• Experience with system monitoring and antivirus software.
• Familiarity with RMF processes and Continuous Monitoring.
• Active TS/SCI Clearance.

Responsibilities

• Administer, maintain, and support Linux and Windows servers.
• Manage user accounts, groups, and permissions in Active Directory.
• Enforce security policies for account management and access control.
• Perform updates, patches, and backups to maintain security.
• Write detailed technical and operational reports.
• Review and update IT policies to align with best practices and regs.
• Monitor virus definitions and system security logs for threats.
• Support RMF process using eMASS or Xacta for accreditation and continuous monitoring.
• Travel up to 25% of the time.

Skills

Active Directory

Security policies

PowerShell

Bash scripting

System monitoring

Antivirus software

RMF processes

TS/SCI Clearance

Education

Bachelor’s Degree

Graduate Degree

Tools

eMASS

Xacta

Job description

L3Harris Technologies is seeking a highly skilled System Administrator to support Linux and Windows servers in a Department of Defense‑related environment in Waco, TX. The role emphasizes AD account management, policy updates, and reporting.

Responsibilities include security policy enforcement, system updates, backups, RMF compliance with eMASS or Xacta, monitoring logs, and travel up to 25%. Requires Security+ or DoD 8140 IAT II, PowerShell or Bash, and TS/SCI clearance.