Windows & Linux Systems Admin (SD)

Windows & Linux Systems AdministratorApex Systems is seeking a Windows & Linux Systems Administrator to support a Research, Development, Test, and Evaluation (RDT&E) network and secure enclaves supporting NIWC Pacific. This individual will be responsible for maintaining, securing, and enhancing existing infrastructure while supporting the design and implementation of new system capabilities in a highly secure environment.This position requires a hands-on systems administrator with experience supporting both Windows and Red Hat Enterprise Linux (RHEL) environments, automation, system hardening, and cybersecurity compliance initiatives.ResponsibilitiesAdminister and maintain Windows 11 and Red Hat Enterprise Linux (RHEL) systems.Develop, maintain, and execute PowerShell and Bash scripts for automation and system administration tasks.Support the engineering, design, and implementation of infrastructure upgrades and new capabilities.Harden systems in accordance with DISA security requirements, including STIGs, CTOs, and related guidance.Automate system administration and configuration management activities using Ansible playbooks.Apply security updates, patches, and support the IAVM process.Maintain asset tracking databases and inventory records.Develop and update Standard Operating Procedures (SOPs) and technical documentation.Assist with procurement activities, including obtaining vendor quotes and coordinating equipment purchases.Support logistics efforts, including shipping equipment to remote teams.Required QualificationsActive Secret Security Clearance.IAT Level II certification (Security+ CE, GSEC, SCNP, or SSCP).3+ years of Windows system administration experience.3+ years of Red Hat Enterprise Linux (RHEL) administration experience.Experience developing and maintaining PowerShell and Bash scripts.Experience managing vulnerabilities, patches, and security compliance through the IAVM process.Strong understanding of system hardening and DISA STIG implementation.Preferred QualificationsExperience automating administrative tasks using Ansible.Experience supporting endpoint security solutions.Knowledge of cybersecurity best practices within DoD environments.Experience supporting classified or secure enclave environments.