Senior Systems 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 StatesSenior💰 $89,200 - $192,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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

Demonstrates expertise in system administration and support, with a strong focus on maintaining and documenting enterprise IT systems. Proficient in troubleshooting and resolving IT-related issues while ensuring compliance with security standards.

Highest-signal resume keywords

Active TS/SCI With PolyBachelor's Degree In Related FieldEight Years Of Relevant ExperienceRed Hat LinuxWindows 10

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

System AdministrationTroubleshootingDocumentationHelpdesk SupportProblem Resolution

Tools & Technologies

Trusted LinuxVMware

Industry Keywords

Enterprise IT SystemsSOPsHelpdesk Ticket System

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, and hardware
Provide helpdesk support for 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

Active TS/SCI with poly
Bachelor’s degree in related field
Eight years of relevant experience
Demonstrate understanding of Red Hat Linux, Trusted Linux, Windows 10, VMware

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