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Keywords: Tier 3 Service Desk/ System Administrator, Location: Washington DC

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Senior Systems Administrator

resolutions to out of the ordinary issues for users. If unable to diagnose problem, will work with service desk management or Tier... in a ticketing system. Outstanding customer service skills and practices. Experience contributing to a service desk technical...

Company: ManTech
Location: Washington DC
Posted Date: 01 Jan 2026

Tier 3 Service Desk/ System Administrator

Service Desk/System Administrator to join our team supporting the OSINT Integration Center under the DOMEX Technology Platform... technical work, let Leidos show you how to accelerate your career path. Leidos is seeking a highly skilled TS/SCI Tier 3...

Company: Leidos
Location: Washington DC
Posted Date: 08 Feb 2026
Salary: $73450 - 132775 per year

Tier 3 Service Desk/ System Administrator

Service Desk/System Administrator to join our team supporting the OSINT Integration Center under the DOMEX Technology Platform... technical work, let Leidos show you how to accelerate your career path. Leidos is seeking a highly skilled TS/SCI Tier 3...

Company: Leidos
Location: Washington DC
Posted Date: 08 Feb 2026
Salary: $73450 - 132775 per year

Senior Systems Administrator

ordinary issues for users. If unable to diagnose problem, will work with service desk management or Tier 3 to diagnose... experience managing and updating customer tickets in a ticketing system. Outstanding customer service skills and practices...

Company: ManTech
Location: Washington DC
Posted Date: 23 Jan 2026
Salary: $107900 - 179400 per year

IT Service Administrator

, Tier 2, and Tier 3 IT help desk staff, ensuring consistent, high-quality service delivery. Oversee the IT ticketing system... Administrator oversees the daily operations of the IT service desk in support of federal agency employees and contractors. This role...

Company: IMAGINEEER LLC
Location: Washington DC
Posted Date: 02 Jan 2026
Salary: $85000 - 90000 per year

Senior Computer Systems Engineer

, and hybrid conferencing system improvements. Collaborate with Service Desk and Tier III Engineering teams for troubleshooting... and sustainment efforts of Microsoft 365 cloud services and unified collaboration systems, supporting both Service Desk...

Company: Peraton
Location: Washington DC
Posted Date: 21 Jan 2026
Salary: $80000 - 128000 per year