{"id":684574,"url":"https://alion.io/job/c3el-enterprise-voice-engineer","title":"Enterprise Voice Engineer","company":{"id":668809,"name":"C3EL","domain":"c3el.com","url":"https://alion.io/company/c3el","size_band":"51-200","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":82,"open_postings":28,"ghost_share":0.214,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":98,"computed_at":"2026-11-04T06:34:25Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"middle","employment_type":null,"work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":71000,"max_usd":130000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":4330},"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"BGP","optional":false},{"name":"MPLS","optional":false},{"name":"VPN","optional":false}],"status":"live","first_seen_at":"2026-07-30T17:32:22Z","employer_posted_date":"2026-07-30","last_verified_at":"2026-11-04T06:46:02Z","board_verified":true,"closed_at":null,"days_open":96,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":96},"description":"Overview:\nJob Title: Enterprise Voice Engineer\nSecurity Clearance: Secret\nLocation: Scott AFB, IL\n(Due to the nature of the work and contract requirements, U.S. Citizenship is required.)\nDescription:\nC3EL is seeking a cleared and experienced Enterprise Voice Engineer to join our team on-site at Scott Air Force Base in Illinois. In this role, you’ll provide technical expertise to sustain, maintain, and enhance critical Defense Information Systems Agency (DISA) voice services-supporting secure, reliable, and mission-ready communications for the Department of Defense and national security organizations.\nResponsibilities will include, but not be limited to:\nPerform engineering tasks to maintain a large, complex and highly resilient IP voice and video communications infrastructure.\nManage, configure, troubleshoot and assure service supporting all aspects of a voice, video and data network. Must be organized, document oriented, possess skills in diagramming, and understand WAN principals.\nPerform system maintenance, support capacity planning activities and complete configuration change actions and documentation efforts.\nConfigure and implement calling search spaces, route plans, route partitions, route lists and device profiles.\nAnalyze and configure Cisco or Juniper routing and switching devices.\nSupport distributed firewall infrastructure.\nProvide input in the development of technical policy, work instructions, and reporting in support of an enterprise IP telephony network.\nAnalyze and resolve complex technical problems utilizing foundational knowledge of SIP signaling and call-flows.\nAnalyze and resolve remote site registration, signaling, and media problems.\nValidate change requests and ensure accuracy.\nPerform fault analysis and configuration of voice subscribers, call handlers and call routing rules.\nPerform fault analysis and configuration of Cisco and or Juniper routing and switching rules.\n Minimum Qualifications:\nU.S. Citizenship.\nAn active, in-scope US Government issued Secret clearance.\nCurrent DoD-8570 IAT Level 2 baseline certification (Security+ CE, or equivalent).\nExperience with one or multiple Cisco, Avaya, or Oracle voice platforms including Cisco Unified Communications Manager (CUCM), Cisco Unity, Cisco Unified Border Element (CUBE), Oracle Session Border Controller (SBC), and Avaya Aura Application Server.\nExpertise in SIP internetworking signaling and call flow. \nDemonstrable experience of advanced fault analysis to isolate and diagnose network problems for routing, switching, security, and large scale voice implementations. \nDesired Qualifications:\nWorking knowledge of Secure Real-Time Transport Protocol (SRTP) including associated G.711 and G.729 codecs and Digital Tone Multi Frequency (DTMF).\nExperience with Cisco Unified Communications Manager and or Avaya Aura soft switches.\nExperience with Oracle SBCs and other voice media gateway appliances.\nExperience supporting distributed firewall infrastructure.\nExperience creating/supporting IPSec MPLS VPN infrastructure. \nExperience implementing and supporting BGP routing protocols. \nExperience designing, configuring and troubleshooting QoS classification, marking and prioritization of network traffic (voice, critical applications, etc.).\nFamiliarity with IPSec implementation and troubleshooting.\nEducation:\n Requires a Bachelor's degree and 4-8 years of prior relevant experience or a Master's degree with 2-6 years of prior relevant experience. 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