Sr VMWare Systems Administrator

Unleash Your Potential

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customer's success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.

If this sounds like an environment where you can thrive, keep reading!

The Mission

Leidos is seeking a System Administrator to support a large enterprise IT contract for the DOD.

This role requires an individual that is technical in VMware administration, providing senior-level support to other systems administrators on configuration best practices. This individual should be detail oriented in order to capture customer inquiries appropriately. This role is responsible for interacting with other administrators to handle service inquiries and problems. Duties include examining highly complex customer problems and suggesting and implementing appropriate corrective action to initiate a repair or return to service. This role analyzes recurring problems and initiates solutions for preventing reoccurrence and analyzes existing infrastructure for tuning/performance enhancements. Individuals in this role may be required to perform technical software configuration, rebooting, and other remedial actions on customer servers.

Primary Tasks

• Administration of VMware virtual environment using vSphere spanning multiple data centers and networks.
• Installation and configuration of VMware vCenter Server and related management servers.
• Installation and configuration of VMware ESXi hosts.
• Perform troubleshooting of existing environment and new deployments in VMWare servers.
• Conduct active monitoring of environment and respond to alerts and errors.
• Document, review, and update system administration guides and procedures.
• Configure and troubleshoot VMware virtual switches and NSX switches.
• Configure and troubleshoot vSAN, ISCSI, and NFS datastores.
• Assist other system administrators with troubleshooting virtual machines (Microsoft, RedHat, Ubuntu, etc.) and virtual desktops.
• Mentor junior team members.
• Support operations across multiple geographic locations and networks.
• Develop solutions to complex technical issues, document updates procedures and knowledge articles, and implement solutions.
• Provide follow-up reports (technical findings, feedback, resolution steps taken) for Root Cause Analysis, engineering technical assessment and process improvement initiatives.
• Interacting with customers and senior managers to handle service requests, inquiries, and problems.
• Support customer requirements in a 24/7/365 mission environment via after-hours emergency support, planning and scheduling downtime, and routine maintenance scheduling.
• Provide mentoring and training to 24/7/365 IT Operations Center (ITOC) personnel.
• Develop and update Standard Operating Procedures (SOPs) and monitoring documentation for 24/7/365 ITOC personnel.

Successful candidates must possess the following skills:

• Extensive experience with VMware vCenter including installing, configuring, securing, managing, troubleshooting, backup/restore, and upgrading on versions 6.0 and newer.
• Extensive experience with ESXi host management including installing, configuring, securing, troubleshooting, and upgrading.
• Extensive experience with vSAN including server side configuring, management, and troubleshooting virtual storage.
• Extensive experience with NSX virtual networking including installing virtual switches, configuring, VLANs/subnets, and NSX command line.
• Extensive experience with datastore management utilizing ISCSI and NFS.
• Experience with configuring and scheduling automated backups.
• Experience with creating and managing snapshot policies.
• Familiarity with Hyper Converged Infrastructure (HCI) solutions such as Dell VXRail.
• Experience with performance monitoring, tuning, and optimization of VMware environment.
• Experience with troubleshooting VM/VDI errors.
• Experience with creating and troubleshooting automation scripts using PowerShell and PowerCLI.
• Ability to manage time appropriately, triage incidents, and respond accordingly to issues impacting mission critical customers and services
• Experience implementing system patches and upgrades with minimal downtime to customers.
• 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 IT Service Management solutions such as Service Now or Remedy

Clearance

• An active TS/SCI with polygraph is required for this position or TS/SCI and willingness to obtain and maintain a polygraph.
• ship is required due to the nature of the government contracts we support.

Education

• The candidate must have Bachelor's Degree with 8 years of prior relevant experience, Masters with 6 years of prior relevant experience, an Associates' Degree with 10 years of prior relevant experience or 12 years of prior relevant experience in lieu of education

Certifications

• Candidate must, at a minimum, meet DoDM 8140.03 (previously DoD 8570) - IT System Admin Intermediate certification requirements (Cloud+, GICSP, SSCP, Security+ CE, GSEC, or higher). Specific "or higher" certifications for systems administrators include FITSP-O, GFACT, CASP+, CCNP Security, or CCSP.

Preferred Qualifications

• VCP certification

Come break things (in a good way). Then build them smarter.

We're the tech company everyone calls when things get weird. We don't wear capes (they're a safety hazard), but we do solve high-stakes problems with code, caffeine, and a healthy disregard for "how it's always been done."

Original Posting:
July 28, 2025
For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above.

Pay Range:
Pay Range $89,700.00 - $162,150.00

The Leidos pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law.