Description The DISA IT Operation within Leidos' Digital Modernization Group is seeking a  Senior Virtualization Engineer  to support the Compartmented Enterprise Services Office (CESO) Task Order for the GIG Service Management - Operations II (GSM-O II) contract.  This person should be a seasoned, self-motivated, professional with at least 10 years of hands-on engineering and testing experience in virtualized on-premise and cloud environments. A skilled knowledgeable engineer with experienced in developing and implementing a VMWARE ESXi infrastructure. With the CESO program, the Defense Information System Agency (DISA) is looking to transform the existing Secure Web Services (SWS) environment, used to provide secure information sharing to the community, into a more mature service offering to meet the DoD and IC community.  As part of this task order, Leidos will manage the commercial cloud migration and fully automate the continuous development & continuous integration environment, fourth estate consolidation, professionalize services - ITIL/DevSecOps based processes, improve the customer experience 1st call resolution, and achieve development of a service catalog for Defense Working Capital Fund (DWCF) Model.

This position is 100% onsite in Arlington, VA  with occasional/situational travel in and outside of the Washington Metro Area. Primary Responsibilities: Provide Tier 3 support to members of the operations virtualization administrators. Maintain all HW and SW components at vendor supported levels. Maintain expert knowledge of ESXi hosts, clusters, and vSAN. Support mission-critical Continuity of Operations (COOP). Develop and/or participate in After Action Reports (AARs) Provide expert advice and direction regarding the management and operation of all VMWARE clusters in the DISA CESO enterprise architecture. Evaluate current technologies and processes associated with DISA CESO to identify gaps. Provide requirements and strategies for future cybersecurity operations. Active participant in meetings with DISA CESO and mission partner working groups. Adhere to applicable DOD STIGs, DISA applicable orders, and JSIG policy, guidelines, and regulations. Qualifications: Bachelor's degree and 8+ years of directly relevant experience. Additional experience may be considered in lieu of degree. 6+ years of hands-on VMWARE experience in both engineering, operations and maintenance roles. Candidate must possess an active DOD TS/SCI security clearance. Candidate must be willing to take and maintain a CI/Poly Strong knowledge of VMWARE concepts and best practices: Experience working in a high op-temp, Top Secret environment. 8570 IAT Level II Baseline Certification (e.g. CCNA Security, CySA+, GICSP, GSEC, Security+ CE, CND, SSCP) Preferred Qualifications: VCP- VMWare Certification desired Prior experienced with DISA and DISA's support to mission partners 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: August 7, 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 $104,650.00 - $189,175.00 The Leidos pay range for this job level is a general guideline onlyand 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.