Deep awareness of commercial crypto and secure transport solutions, including COTS IPsec VPN gateways/clients, MACsec devices, TLS-protected services, PKI/certificate authority dependencies, authentication services, software and hardware encryption approaches, MDM/EUD dependencies, secure voice/VoIP components, commercial firewall/VPN platforms, SD-WAN security, SASE/SSE concepts, cloud interconnect security, and managed carrier transport options. Position Overview: VT-ARC is seeking a Senior Secure WAN Encryption Engineer & Architect (SME) to lead secure transport architecture, WAN encryption integration, CSfC-aware solution planning, commercial crypto solution evaluation, Type 1 inline encryption integration, and crypto modernization for mission-critical programs in secure zero-trust environments.