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.
We deliver secure, mission-focused solutions at scale to accelerate our customer's digital transformation objectives. We do so by providing resilient enterprise IT solutions and managed services that leverage trusted AI and full-spectrum cyber to increase efficiencies, decrease burdens, and minimize vulnerabilities in complex IT operations.
Leidos is seeking a highly qualified candidate for the
IT Systems Administration Specialist 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 Team Lead 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.
- Install, configure, and troubleshoot computer networking systems, ensuring optimal performance.
- Assist in cabling and network setup for various IT infrastructure projects.
- Maintain, service, and repair switch, computer hardware, peripherals, and software.
- 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:- Bachelor's degree in information systems, computer science, information security or related field and 8+ years of prior relevant work experience or a Masters with 6+ years of prior relevant experience, additional years of experience will be accepted in lieu of a degree.
- Active DoD clearance at the Top-Secret/SCI level
- CompTIA Security+ Certification or other DOD 8570 IAT Level II Certification.
- Experience managing virtual machines and VMware ESXi.
- At least 3 years Linux and/or Windows familiarity.
- Ability to maintain servers, create monitoring reports and logs, and ensure functionality of systems.
- Knowledge of defense-in-depth principles, Network and Security architecture, network topology, IT device integrity, and common security elements.
- Experience configuring network devices.
- An understanding and in-depth knowledge of IP network/subnet addressing.
- Experience developing and presenting technical information to team lead.
- Hands-on experience deploying, configuring and troubleshooting Cisco enterprise network routing, switching and firewall/security devices.
- Strong knowledge of server hardware, storage, and networking concepts in virtualized environments.
- Effective written and oral communication and problem-solving skills
- Ability to travel up to 10%+ CONUS travel.
Preferred Qualifications: - Extensive knowledge of network engineering and operations, integration, test and evaluation activities, as well as implementation and transition to Network Operations processes and concepts.
- Experience with VDI technologies.
- Experience and with and practical understanding of enterprise WAN principles.
- Experience with change, configuration and performance management NetOps concepts.
- Networking experience with CCNA and/or COMPTIA Network+ certifications are a plus.
If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares.
Original Posting:February 2, 2026
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 $92,300.00 - $166,850.00
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.
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