Senior Voice Network Engineer

Fort Worth, TX

Job description

Reply at Manoj.T@valzosoft.com Job Title: Senior Voice Network Engineer Location: Fort Worth, TX Duration: 6 Months Experience: 6-8 Years EAD OPT acceptable as well Job Description We are seeking an experienced Senior Voice Network Engineer to design, implement, support, and optimize enterprise Unified Communications (UC) solutions. The ideal candidate will have strong expertise in Cisco collaboration technologies, Microsoft Teams Phone, enterprise voice networking, and cloud calling solutions. The engineer will collaborate with network, security, telecommunications, infrastructure, and service desk teams to ensure reliable, secure, and high-quality voice, video, messaging, and collaboration services. Key Responsibilities - Design, deploy, configure, and support Unified Communications platforms, including Cisco Unified Communications Manager (CUCM), Cisco Unity Connection, Cisco Webex, Webex Calling, and Microsoft Teams Phone. - Manage Cisco Session Border Controllers (SBCs), voice gateways, SIP trunks, and PSTN connectivity. - Support Microsoft Teams Direct Routing, Operator Connect, and cloud calling solutions. - Configure dial plans, route patterns, calling policies, hunt groups, auto attendants, call queues, voicemail, and number management. - Administer Microsoft Teams voice features through the Teams Admin Center and PowerShell. - Troubleshoot voice, video, messaging, and collaboration issues across LAN, WAN, internet, and cloud environments. - Analyze call quality using latency, jitter, packet loss, Mean Opinion Score (MOS), Quality of Service (QoS), and diagnostic tools. - Configure and maintain VLANs, routing, DNS, DHCP, NAT, QoS, and firewall rules supporting real-time communications. - Support desk phones, conference-room systems, headsets, soft clients, voice gateways, and network infrastructure. - Manage user provisioning, licensing, onboarding, offboarding, and telephony migrations. - Monitor platform availability, capacity, performance, and call quality. - Perform system upgrades, patching, certificate renewals, backup validation, and lifecycle management. - Coordinate incident response, root-cause analysis, change management, and problem resolution. - Maintain technical documentation, network diagrams, dial plans, configuration standards, and operational procedures. - Coordinate with telecommunications carriers and vendors to resolve service issues. - Participate in the on-call rotation for critical incidents. Required Qualifications - 6-8 years of relevant experience in enterprise networking, voice engineering, or Unified Communications. - Strong knowledge of SIP, RTP, SRTP, SDP, TLS, codecs, dial plans, and PSTN technologies. - Hands-on experience with Microsoft Teams Phone, Direct Routing, and/or Operator Connect. - Experience with Cisco collaboration technologies, including CUCM, Unity Connection, Webex, CUBE, and Cisco voice gateways. - Strong understanding of TCP/IP, routing, switching, VLANs, QoS, DNS, DHCP, NAT, VPNs, and firewalls. - Experience troubleshooting voice quality and connectivity issues using packet captures, call logs, and monitoring tools. - Familiarity with identity management, authentication, certificates, and cloud service integrations. - Strong analytical, communication, documentation, and incident-management skills. - Bachelor's degree in Information Technology, Networking, Telecommunications, or a related field, or equivalent professional experience. Preferred Qualifications - Experience migrating from on-premises telephony to Microsoft Teams Phone, Webex Calling, or other cloud calling platforms. - Knowledge of hybrid Cisco and Microsoft collaboration environments. - Experience with Cisco Viptela, Juniper routing and switching, and network operations. - Familiarity with PowerShell, APIs, Python, or other automation tools. - Knowledge of ITIL practices and enterprise change-management processes. - Relevant certifications such as: - Cisco CCNA or CCNP Enterprise - CCNP Collaboration - Microsoft Teams Administrator Associate - Microsoft Teams Voice Engineer Expert or current equivalent - ITIL Foundation Work Schedule - Monday and Friday: Remote, 8:00 AM-5:00 PM Central Time. - Tuesday through Thursday: Onsite in Fort Worth, TX, 8:00 AM-5:00 PM Central Time. - Weekend on-call: Phone support one weekend approximately every 10 weeks. Work Location: Fort Worth headquarters, One Transformation Way, Fort Worth, TX.