{"id":3550885,"url":"https://alion.io/job/elfonze-technologies-senior-voice-collaboration-engineer","title":"Senior Voice / Collaboration Engineer","company":{"id":4445146,"name":"Elfonze Technologies","domain":"elfonze.com","url":"https://alion.io/company/elfonze-technologies","size_band":"501-1000","is_staffing_agency":false,"employer_type":"staffing","is_intermediary":false,"listed_via":null,"ats_vendor":"Zoho Recruit","truth_index":{"grade":"B","score":75,"open_postings":15,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-11-03T05:54:40Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["India"],"countries":["IN"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":8,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"DHCP","optional":false},{"name":"DNS","optional":false}],"status":"closed","first_seen_at":"2026-10-13T00:00:00Z","employer_posted_date":"2026-10-13","last_verified_at":"2026-11-03T07:55:19Z","board_verified":false,"closed_at":"2026-11-03T07:55:19Z","days_open":21,"trust":{"level":"not_scored","repost_count":null,"flags":[],"days_open":21},"description":"Job Description: Senior Voice / Collaboration EngineerJob Description Experience 8+ years Primary Focus Local CUCM, SIP/PSTN, CUBE, Unity and site voice migration Work Model Remote with onsite support for larger/critical site cutovers where required\nRole Summary Senior hands-on engineer responsible for implementation, migration and cutover of the local Cisco voice environment. The role requires deep experience with CUCM, SIP/CUBE, PSTN services, endpoint migration, carrier coordination and site-level voice dependencies. Key Responsibilities / Implementation Scope\nBuild and configure the local/on-premises Cisco Unified Communications environment, including CUCM Publisher and Subscribers, Cisco Unity Connection, CUBE/voice gateways, device pools, regions, locations, partitions, Calling Search Spaces, route groups, route lists, route patterns, translation patterns and dial plans.\nConfigure and validate SIP connectivity and call routing between CUCM, CUBE, carriers, contact-center platforms and other voice systems.\nSupport setup and testing of new SIP/PSTN services and coordinate with carriers for circuit activation, DID allocation, number porting and production service validation.\nConfigure and troubleshoot CUBE and voice gateways, including dial peers, SIP profiles, codec negotiation, DTMF, RTP/SRTP, TLS, media flow and number manipulation.\nMigrate and re-register Cisco IP phones, softphones, conference devices and other VoIP endpoints into the NewCo voice environment.\nConfigure and validate voice VLANs, DHCP options, DNS/NTP dependencies, QoS policies, gateway connectivity and network reachability required for voice services.\nMigrate DIDs, extensions, toll-free numbers, voicemail boxes, auto attendants, hunt groups, callforwarding rules and call-routing configurations.\nSupport Five9/contact-center integration, including SIP connectivity, DID routing, inbound/outbound customer call flows, failover and end-to-end call validation.\nValidate and migrate analog lines, fax, paging/PA systems, emergency or site-specific voice dependencies where applicable.\nExecute site-by-site cutovers covering pre-cutover validation, endpoint migration, number-porting coordination, testing, rollback support, issue resolution and hypercare.\nProvide onsite implementation support for larger/critical sites and remote deployment support for smaller sites as required.\nTroubleshoot using CUCM RTMT, CUBE/IOS logs, SIP traces, packet captures, debugs and call-detail records. Required\nTechnical Skills Area Required Hands-on Experience Cisco Collaboration CUCM Publisher/Subscriber, Cisco Unity Connection, Cisco IP Phones, devicregions, locations, partitions, CSS, route patterns, route lists/groups, translatipatterns and SRST concepts. SIP / CUBE SIP trunks, dial peers, SIP profiles/normalization, DTMF, codec negotiation, RTP/SRTP, TLS, media flow and carrier integration. PSTN / Numbering PSTN services, DIDs, toll-free numbers, number porting, inbound/outbound cand carrier coordination. Network Dependencies Voice VLANs, DHCP, DNS, NTP, QoS, gateway connectivity, routing and pac troubleshooting. Contact Center / Legacy Voice Five9 integration, analog gateways/lines, fax, paging/PA and site-specific teledependencies. Migration & Cutover Site migration planning, cutover execution, rollback, testing, hypercare and as documentation. Certification\nRequirements Mandatory: Cisco voice/collaboration certification required. Acceptable senior credentials include Cisco Certified Specialist - Collaboration Core (350-801 CLCOR), CCNP Collaboration, or CCIE Collaboration. Preferred / Advantageous: Relevant Collaboration concentration credentials such as CLACC/CLHCT and prior enterprise voice migration experience. Required Deliverables\nLow-level design / configuration workbook\nImplementation runbook / Method of Procedure (MOP)\nSite cutover and rollback plans\nVoice test scripts and validation evidence\n• As-built configuration and operational handover documentation","description_format":"text","description_chars":3984,"description_truncated":false,"requirements":{"experience_years_min":8,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":[],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Information Technology","IT Consulting & Digital Transformation","Supply Chain"],"lifecycle":[{"event":"open","at":"2026-10-30T22:37:43Z"},{"event":"close","at":"2026-11-03T07:55:19Z"}],"visa":[],"liveness":null,"pay":null,"html_url":"https://alion.io/job/elfonze-technologies-senior-voice-collaboration-engineer","json_url":"https://alion.io/job/elfonze-technologies-senior-voice-collaboration-engineer.json","meta":{"generated_at":"2026-11-03T11:43:40Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":15981,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-04T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":4445146},"rest":"https://alion.io/mcp/rest/get_company?id=4445146"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Felfonze-technologies-senior-voice-collaboration-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Felfonze-technologies-senior-voice-collaboration-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Felfonze-technologies-senior-voice-collaboration-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/elfonze-technologies-senior-voice-collaboration-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Felfonze-technologies-senior-voice-collaboration-engineer"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":3550885}},{"tool":"search_jobs","arguments":{"company":"elfonze.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":3550885},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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