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From the employer's careers site First seen 26 Oct 2026

Senior System Administrator

Leidos senior full-time

Salary

$92,300 - $166,850 per year

Apply on Leidos

Description

Leidos is seeking a Senior System Administrator to support a large enterprise IT contract for the DOD. The Administrator will provide operations support to customers across multiple geographic locations.

Responsibilities:

  • Perform remote administration of servers located in offsite data centers
  • Provide Tier 2 and Tier 3 operations support for Citrix technologies and Microsoft M365 Azure Virtual Desktop (AVD)
  • Monitor infrastructure and identify system anomalies before they impact customers
  • Work closely with Engineering staff to plan out future modernization efforts
  • Collaborate to perform network latency analysis to address slow connections and user experience issues
  • Implement version and architectural changes to existing systems to maintain operability and security of the environment
  • Implement major system upgrades as designed and approved
  • Coordinate with other Tier 2 and Tier 3 teams for testing and deployment of Group Policy modifications
  • Perform periodic backup and restoration of servers
  • Monitor desktop capacity to size the environment based on typical usage trends
  • Monitor License and Certificate status on the systems and coordinate the renewal and installation as needed
  • Coordinate with customers and stakeholders to collect data, conduct analysis, develop, and implement solutions associated with incident tickets and requirements
  • Establish comprehensive availability and capacity management solution using lessons learned
  • Develop solutions to technical issues
  • Provide follow-up reports for root cause analysis, engineering technical assessment, and process improvement initiatives
  • Periodically review, update, and generate Standard Operating Procedures (SOPs) for systems and services under control
  • Update operations and monitoring documentation for 24/7/365 IT Operations Center (ITOC) personnel
  • Respond to after-hours outages when deemed mission critical by ITOC government rep
  • Conduct routine maintenance following customers' prescribed maintenance windows
  • Provide mentorship and training for junior team members

Basic Qualifications:

  • Experience with interacting with customers to handle service inquiries and problems
  • Experience working as a Tier 2 and Tier 3 system administrator
  • Knowledge of IC IT standards and best practices
  • Extensive knowledge of Citrix technologies
  • Experience managing Microsoft M365 Azure Virtual Desktops (AVD)
  • Extensive experience with patch and upgrade methodology for front-end and back-end systems based on Citrix technology
  • Experience with rapid testing, validation, and deployment of new baseline images
  • Extensive experience with conducting incident and trend analysis
  • Experience with Scripting/Automation
  • Experience troubleshooting issues in a growing environment
  • Time management skills
  • Strong oral and written communications skills
  • Track record of working effectively within a team and support to peers toward improved processes and results
  • Experience with support ticket management systems
  • Experience mentoring others and/or supervising others

Certifications:

  • Candidate must meet DoDM 8140.03 (previously DoD 8570) – IT System Admin Intermediate certification requirements

Education:

  • Candidate must have a Bachelor's degree with 8 years of relevant experience, Master's degree with 6 years, Associate's with 10 years, or High School Diploma with 12 years

Clearance:

  • US Citizenship is required
  • TS/SCI with Poly required for Position or TS/SCI and willingness to obtain and maintain a polygraph

Skills

Required

  • Citrix technologies
  • Microsoft M365 Azure Virtual Desktop (AVD)
  • Scripting/Automation
  • IT Service Management software

Ready to apply?

You apply with the employer directly. Their original posting is here: https://leidos.wd5.myworkdayjobs.com/en-US/External/job/Alexandria-VA/Senior-VDI-Administrator_R-00194812

Apply on Leidos