Provide SME engineering services to design, configure, test, implement, and sustain STIG-compliant network and security architectures, including NAC (802.1x), reverse proxy and load balancing, web filtering, DNS/DHCP/IPAM, VPN, wireless/IDS, VDI support, VoIP/VTC/streaming, Check Point firewalls and MDM, NMS tool suites, MPLS architecture, SATCOM support, and DR/COOP planning; perform Tier IV troubleshooting and produce required technical documentation (ECRs, ITRs, NSOs, AARs, test plans/reports, and as-built diagrams). The EA will provide high-level architectural expertise to managers and technical staff; develop architectural products and deliverables for the enterprise and operational business lines; Advise on selection of technological purchases with regards to processing, data storage, data access, networks, systems, and applications development; Advise of feasibility of potential future projects to management.