VA-Quantico, Senior VoIP Engineer Quantico, VA MUST: Be an experienced VoIP Engineer Possess an active Secret, or higher, clearance. 5+ years of experience designing, building, and/or maintaining communications systems with minimum of three (3) years of experience with CISCO Unified Communications Manager (CUCM) Version 10.5 or newer. Prior experience with Cisco Unity, Cisco Presences, Cisco Emergency Responde