Principal System Administrator – Government

AT&T

. Maintain and develop system documentation, including product guides/manuals, SOPs, work logs, and the Helpdesk ticket system .

Posted 10/6/2026full-timeColumbia • Maryland • United StatesLead💰 $108,000 - $203,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in system administration, documentation, and helpdesk support for enterprise IT systems. Proficient in maintaining and resolving issues related to software and hardware, with a strong understanding of relevant operating systems and security certifications.

Highest-signal resume keywords

System Administration SupportRed Hat LinuxWindows 10Active TS/SCI With PolySecurity+ Certification

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

System DocumentationTrouble Ticket ResolutionHelpdesk SupportProblem Report ManagementEnterprise IT Systems Administration

Tools & Technologies

Trusted LinuxVMware

Certifications & Qualifications

Bachelor's DegreeSecurity+

Tech Stack

Tools & technologies

LinuxTypeScriptVMware

About the role

Key responsibilities & impact

Maintain and develop system documentation, including product guides/manuals, SOPs, work logs, and the Helpdesk ticket system
Provide system administration support
Maintain and support existing software, including problem report/trouble ticket resolution
Maintain and support existing hardware
Provide helpdesk support by collecting, controlling, disseminating, documenting, and resolving IT-related questions and problems
Support operations by maintaining, documenting, and administering enterprise IT systems

Requirements

What you’ll need

Bachelor’s degree in a related field
13 years of relevant experience
Active TS/SCI with poly
Understanding of Red Hat Linux, Trusted Linux, Windows 10, and VMware
Security+ or relevant certification (desired)

Benefits

Comp & perks

Medical/Dental/Vision coverage
401(k) plan
Tuition reimbursement program
Paid Time Off and Holidays (based on date of hire, at least 23 days of vacation each year and 9 company-designated holidays)
Paid Parental Leave
Paid Caregiver Leave
Additional sick leave beyond what state and local law require may be available but is unprotected
Adoption Reimbursement
Disability Benefits (short term and long term)
Life and Accidental Death Insurance
Supplemental benefit programs: critical illness/accident hospital indemnity/group legal
Employee Assistance Programs (EAP)
Extensive employee wellness programs
Employee discounts up to 50% off on eligible AT&T mobility plans and accessories, AT&T internet (and fiber where available) and AT&T wireline phone