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Jr. System Administrator

LeidosO'Fallon, IL

$50,700–91,650/yr

Posted Sep 24, 2026

What you’d do

Maintain multi-user computer systems, monitor alarms, update tickets and documentation, and support users on a Monday–Friday business-hours schedule with on-call, extended-hour and weekend support as needed. Found on the employer's careers page on Oct 18, 2026. Apply through the link.

You’ll need

  • BA degree or equivalent experience
  • Less than 2 years of experience
  • 1 year in a customer service environment
  • Active SECRET security clearance
  • Security+ or DoD 8750 certification within 6 months

Our summary of the listing. The full listing has the details.

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