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Job Details

Systems Administrator


Systems Administrator


San Antonio, Texas, United States


At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customers’ 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.

The Digital Modernization Sector is focused on delivering performance-based IT services and repeatable solutions to include applying cloud-factory and aaS (as a Service) capabilities and integrating commercial products to provide a comprehensive digital engineering approach to IT transformation. Our team is solving the world’s toughest security challenges for customers with “can’t fail” missions. To explore and learn more, click here!

Leidos is seeking a highly qualified candidate for the ​Server Administration​ position for the Integrated Defensive Cyber Systems Contract. This position is located near Lackland Air Force Base; all work is onsite.

Primary Responsibilities:

  • Manage installation, configuration, and troubleshooting of diverse server systems encompassing Windows, Linux, and Appliances, ensuring seamless functionality and optimal performance.

  • Collaborate closely with the Lead Engineer to meticulously identify, assess, and present viable options for meeting functional and technical requirements, encompassing both hardware and software solutions, fostering informed decision-making.

  • Efficiently manage and configure Virtual Desktop Infrastructure (VDI) environments, optimizing user experience and resource utilization to meet organizational objectives effectively.

  • Document and rigorously enforce hardware standards to uphold consistency, reliability, and compatibility across server infrastructure, enhancing efficiency and minimizing potential vulnerabilities.

  • Oversee the management and maintenance of IP addressing schema, ensuring logical and efficient allocation of network resources, promoting scalability and streamlined communication.

  • Execute comprehensive security hardening measures, timely patching, and server certificate updates, while also leveraging expertise in Cloud technologies to bolster resilience and adaptability in the infrastructure.

  • Develop meticulous documentation for System Installation Plans and System Administration Guides, empowering stakeholders with clear, accessible resources for system setup, maintenance, and troubleshooting.

  • Fulfill additional tasks as directed by Lead Engineers or Project Managers, demonstrating adaptability and a willingness to contribute to the team's success across various initiatives.

  • Provide transparent and regular status updates in the requested format, fostering clear communication and alignment with project milestones and objectives, ensuring stakeholders remain informed and engaged throughout the process.

Basic Qualifications:

  • Requires BS and 8+ years of prior relevant experience or Masters with 6+ years of prior relevant experience, additional years of experience will be accepted in lieu of a degree.

  • Must have a current Top Secret / SCI clearance.

  • Ability to work independently, and work effectively in a collaborative team environment while keeping the team informed.

  • Excellent customer facing skills.

  • Excellent researching, decision-making and organizational skills are required.

  • Excellent written and verbal communication skills.

  • Proven analytical, evaluative, and problem-solving abilities.

  • Working knowledge of Microsoft Office Suite including Microsoft Visio.

  • Maintain confidentiality and adhere to data protection and other guidelines where appropriate.

  • ITIL training and/or certification.

  • Sec+ CE or higher.

  • Ample experience with Virtualization and application migrations in general.

  • Understand snapshot, cloning and vMotion.

  • Proven experience as a Systems Engineer or in a similar role, with a deep understanding of Ideally experience with VMware virtualization technologies (vSphere, ESXi, vCenter Server).

  • Strong knowledge of server hardware, storage, and networking concepts in virtualized environments.

  • Experience with designing and implementing VMware virtual infrastructure solutions, including scalability and high availability considerations.

  • Experience with standing up ESXi hosts, various versions, AD integrations, time, and DNS services.

  • Experience with VMware licensing.

  • Experience with NSX tool, install, configure and various migration strategies.

Preferred Qualifications:

  • VMware certifications (such as VCP, VCAP, VCIX) are highly desirable.

  • MCSE certification.

  • Experience with vRealize tools such as vROPs, VRNI, HCX, and vCloud.

  • Expertise with metro or stretched cluster, VMware vSAN, in a standalone cluster as well as the stretched cluster and data replications.

  • Expertise with VMware affinity rules, High availability, and DRS as well as host patching and upgrades.

  • Good understanding of stretched cluster networking requirements, VMware and network ports and protocol, vSAN policies, VMware vCenter 7 and ESXi 7, and security requirements, ESXi 7 STIG and certificates requirements.

  • Understanding of data deduplication, compression and encryption, witness site and its rule, and nested nodes. 

  • Proficiency in troubleshooting VMware-related issues, analyzing logs, and diagnosing performance problems.

  • Exposure to Oracle and SQL databases. 

  • ITSM knowledge and experience, particularly with Remedy.

  • Active TS/SCI with full polygraph highly desired

Original Posting Date:


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 $87,100.00 - $157,450.00

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.