REQ# GDI_19_027: Will install, configure, and perform security scans using ACAS for physical and virtual servers including IAVA, STIG, and applying patches. Will install, configure, and test HBSS software for production and test environments. Will ensure environment and applications are STIG compliant. Will conduct routine maintenance operations on existing hardware and software and apply required patches. Create/maintain SOPs documenting the patching processes, ACAS scanning, etc. Generate and review ACAS scans including STIG related findings, upload results to program dashboard. Provide input to IAO for mitigation POA&Ms and C&A Plans (as necessary). Candidate will have privileged access and must meet minimum Cybersecurity Workforce (CSWF) IAT Level II certifications (Security+ CE, Linux+, and/or Windows Server operating system certifications). Candidate must be a US citizen and have a TS clearance with SCI eligibility.