> Markdown version of [/jobs/ext/1466156-sr-systems-administrator-systems-administrator-4](https://www.wearedevelopers.com/jobs/ext/1466156-sr-systems-administrator-systems-administrator-4). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Sr. Systems Administrator (Systems Administrator 4) - **Company:** HII Mission Technologies - **Location:** Virginia Beach, VA, United States - **Experience:** Expert - **Salary:** $120,000.0 - $130,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Apple IOS, BIOS, Cyber Security, Information Systems, Computer Engineering, Linux, Network Administration, Red Hat Enterprise Linux, Security Content Automation Protocol, Information Technology, Patch Management, Cisco - **Published:** July 28, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9059867/sr-systems-administrator-systems-administrator-4 ## About the Role * 10 years relevant experience with Bachelors in related field; 8 years relevant experience with Masters in related field; or High School Diploma or equivalent and 14 years relevant experience., * Demonstrated ability to architnitiatives.ect, manage, and secure complex enterprise-level systems and servers. * Advanced proficiency with Red Hat Enterprise Linux (RHEL), including configuration, system hardening, and deep troubleshooting across multiple versions. * Proven expertise with the Assured Compliance Assessment Solution (ACAS), Security Content Automation Protocol (SCAP), and large-scale patch management. * Background mentoring technical staff and contributing to system modernization and improvement i, * Ability to otain a DoD Information Assurance Technician (IAT) Level II certification or higher (e.g., Security+ CE, CCNA Security, CySA+) within 3 months of hire if not currently held. * Must be a U.S. Citizen. * Must have a current or active DoD Secret clearance. * Experience with Foreign Military Sales (FMS). * Experience with Navy Training Systems. * Degree in Electrical/Electronic/Computer Engineering, Computer Science, or Information Systems * May require working in an office, industrial, shipboard, or laboratory environment. Must be capable of climbing ladders and tolerating confined spaces and a range of temperature conditions during shipboard or testing activities. * Occasional travel to customer sites may be required. ## Description HII Mission Technologies is seeking a Sr. Systems Administrator to provide mid-level system administration, lifecycle upgrades, and enterprise support for distributed Navy training environments. This role ensures reliable operation of Linux- and Windows-based systems, Performs OS upgrade efforts and provides technical support and leadership across sites. The position requires independent technical judgment, strong problem-solving ability, and the expertise to maintain secure, high-availability systems. This full-time, on-site role is part of a high-performing engineering team delivering mission-driven solutions that improve warfighter training and decision-making., Maintains smooth operation of multi-user computer systems, including coordination with network administrators. Duties may include and are not limited to: * Maintain multi-OS lab environment (i.e. RHEL, Rocky, Windows 11) systems across standalone network systems in a lab environment to support USN BFTT/ATD training systems * Configure, upgrade, and administer Linux (RHEL, Rocky) systems, including installation, BIOS settings, patching * Configure, upgrade, and administer Windows (e.g. Windows11) systems, including installation, BIOS settings, patching * Configure, upgrade, and administer switch IOS (e.g. HP Aruba and Cisco) systems, including installation, BIOS settings, patching * Provide troubleshooting for the environment to provide local and distance support for peers and coworkers * Provide recommendations to the customer based on issues during installation, and operational testing, to include issues with patching and cyber security * Attend various meetings as related to products * Work with customers through the lifecycle of the project from planning, procurement, Test & Evaluation, Implementation, & Operations and Maintenance * Assist with trouble-ticket creation, resolution, implementation * Document creation, review, updates, releasability reviews ## Related Videos - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [10M Data Records Lost, Underwater Computing, and Psychedelic Fish - Matthias Geniar](https://www.wearedevelopers.com/videos/1908-10m-data-records-lost-underwater-computing-and-psychedelic-fish-matthias-geniar) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Computer Vision from the Edge to the Cloud done easy](https://www.wearedevelopers.com/videos/263-computer-vision-from-the-edge-to-the-cloud-done-easy) ## Related Articles - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [9 Ways to Make Money Hacking](https://www.wearedevelopers.com/magazine/333-9-ways-to-make-money-hacking) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Dev Digest 134 - Where pixels sing?](https://www.wearedevelopers.com/magazine/477-dev-digest-134-where-pixels-sing) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [A Guide to Green Tech and Green IT Careers](https://www.wearedevelopers.com/magazine/374-a-guide-to-green-tech-and-green-it-careers)