Senior Systems Administrator - Windows & Linux, Tactical IT

Precise Systems is seeking a highly experienced System Administrator III to provide senior-level administration, sustainment, troubleshooting, and security hardening across Windows, Linux, virtualization, and network environments. The role supports secure enterprise and tactical systems in government/defense settings and requires in-person presence. Responsibilities include leading administration, implementing CMMC alignment, DISA STIG, vulnerability remediation, backups, and network