Execute cybersecurity compliance and engineering activities across lab, integration, and operational support environments (RDT&E and/or program networks as assigned). Perform vulnerability management activities including ACAS scanning coordination, patching support, remediation tracking, and security posture reporting. Apply DISA STIGs/SRGs for Windows, Linux, hypervisors, and network devices; support scripted evaluation where applicable. Support secure network segmentation concepts (VLANs, trunking, routing boundaries), firewall policy implementation/validation, and VPN administration (as directed). Administer and maintain Linux-based systems and services (RHEL/CentOS/Ubuntu), including directory integration and authentication controls where required. Support virtualization platforms (VMware ESXi/vCenter) and backup/recovery practices; help ensure availability and configuration compliance. Contribute to SSE/RMF-relevant artifacts and periodic submissions (plans, evidence, control implementations, scan outputs, POA&M support). Read/interpret relevant architecture/interface products

WBBB/RIBS-P

to ensure security controls align with system boundaries and intended behavior. 10+ years experience in DoD/DoD-adjacent IT, system administration, and/or cybersecurity support

Clearance:

Active Secret required; Top Secret strongly preferred Strong Linux administration background (RHEL preferred) and demonstrated STIG implementation experience Experience with ACAS vulnerability scanning and remediation workflows Working knowledge of enterprise networking fundamentals (routing/switching, VLANs, firewall policy concepts) Experience supporting virtualization (VMware ESXi/vSphere) and backup/recovery Experience supporting classified spaces and handling procedures