Verified Job
Hardware / Network Engineer
Sr. Engineer II - Cisco Voice & Unified Communications
Hardware / Network Engineer
#58378
Remote / WFH
iVision Scale LLC
Job Description
Job Description – Senior Voice Engineer, Unified Communications
Title
Senior Voice Engineer, Unified Communications (Managed Services)
Description
The role of the Senior Voice Engineer, Unified Communications, is to plan, design, implement, and support enterprise voice and Unified Communications solutions to ensure the stable and reliable operation of iVision and client collaboration services. This role is responsible for developing, configuring, maintaining, supporting, and optimizing on-premises, hybrid, and cloud-based voice platforms.
The Senior Voice Engineer serves as a senior technical escalation point within the Managed Services organization, supporting complex client environments while operating within established SLAs, change management, and documentation standards. This role also provides technical leadership, mentorship, and guidance to mid-level and junior engineers.
Core Responsibilities
Design, implement, and support Cisco Unified Communications environments including CUCM, Unity Connection, IM & Presence, and Expressway (Core and Edge)
Design, implement, and support Microsoft Teams Voice solutions including Calling Plans, Operator Connect, Direct Routing, Auto Attendants, Call Queues, and Voice Policies
Lead and execute Cisco UC to Microsoft Teams Voice migrations, including coexistence planning, device strategy, number porting, and phased cutovers
Provide Tier 3 / Tier 4 escalation support for complex voice incidents and performance issues
Troubleshoot SIP signaling, media flow, call quality, and interoperability issues across Cisco and Microsoft platforms
Integrate and support PSTN carriers, SIP trunks, SBCs, and E911 solutions
Develop and maintain technical documentation including designs, diagrams, standards, and operational runbooks
Participate in change management, incident management, and problem management processes
Collaborate with network, security, and cloud engineering teams to ensure end-to-end solution integrity
Assist with mentoring and knowledge transfer to other engineers within the practice
Participate in on-call rotations and after-hours support as required
Position Requirements
Formal Education & Certification
Four-year university degree or college diploma in Computer Science or a related field and/or 8–10+ years of equivalent experience.
Cisco CCNP Collaboration (or CCIE Collaboration)
Microsoft Teams Administrator Associate
Microsoft 365 or Collaboration-focused certifications
ITIL (Managed Services process alignment)
Knowledge & Experience
8–10+ years of experience supporting enterprise voice and Unified Communications environments
Exceptional technical knowledge of Cisco Unified Communications platforms including CUCM, Unity Connection, IM & Presence, and Expressway
Strong experience with Microsoft Teams Phone architecture, policies, and call routing models
Hands-on experience with Cisco-to-Teams Voice migrations and hybrid coexistence scenarios
Strong understanding of voice protocols and technologies including SIP, RTP, SRTP, TLS, codecs, and QoS
Experience integrating SIP trunks, PSTN carriers, SBCs, and emergency calling solutions
Experience operating in a Managed Services environment with SLAs, ticketing systems, and structured operational processes
Ability to independently design and implement complex voice solutions across multiple client environments
Strong troubleshooting, documentation, and communication skills
Title
Senior Voice Engineer, Unified Communications (Managed Services)
Description
The role of the Senior Voice Engineer, Unified Communications, is to plan, design, implement, and support enterprise voice and Unified Communications solutions to ensure the stable and reliable operation of iVision and client collaboration services. This role is responsible for developing, configuring, maintaining, supporting, and optimizing on-premises, hybrid, and cloud-based voice platforms.
The Senior Voice Engineer serves as a senior technical escalation point within the Managed Services organization, supporting complex client environments while operating within established SLAs, change management, and documentation standards. This role also provides technical leadership, mentorship, and guidance to mid-level and junior engineers.
Core Responsibilities
Design, implement, and support Cisco Unified Communications environments including CUCM, Unity Connection, IM & Presence, and Expressway (Core and Edge)
Design, implement, and support Microsoft Teams Voice solutions including Calling Plans, Operator Connect, Direct Routing, Auto Attendants, Call Queues, and Voice Policies
Lead and execute Cisco UC to Microsoft Teams Voice migrations, including coexistence planning, device strategy, number porting, and phased cutovers
Provide Tier 3 / Tier 4 escalation support for complex voice incidents and performance issues
Troubleshoot SIP signaling, media flow, call quality, and interoperability issues across Cisco and Microsoft platforms
Integrate and support PSTN carriers, SIP trunks, SBCs, and E911 solutions
Develop and maintain technical documentation including designs, diagrams, standards, and operational runbooks
Participate in change management, incident management, and problem management processes
Collaborate with network, security, and cloud engineering teams to ensure end-to-end solution integrity
Assist with mentoring and knowledge transfer to other engineers within the practice
Participate in on-call rotations and after-hours support as required
Position Requirements
Formal Education & Certification
Four-year university degree or college diploma in Computer Science or a related field and/or 8–10+ years of equivalent experience.
Cisco CCNP Collaboration (or CCIE Collaboration)
Microsoft Teams Administrator Associate
Microsoft 365 or Collaboration-focused certifications
ITIL (Managed Services process alignment)
Knowledge & Experience
8–10+ years of experience supporting enterprise voice and Unified Communications environments
Exceptional technical knowledge of Cisco Unified Communications platforms including CUCM, Unity Connection, IM & Presence, and Expressway
Strong experience with Microsoft Teams Phone architecture, policies, and call routing models
Hands-on experience with Cisco-to-Teams Voice migrations and hybrid coexistence scenarios
Strong understanding of voice protocols and technologies including SIP, RTP, SRTP, TLS, codecs, and QoS
Experience integrating SIP trunks, PSTN carriers, SBCs, and emergency calling solutions
Experience operating in a Managed Services environment with SLAs, ticketing systems, and structured operational processes
Ability to independently design and implement complex voice solutions across multiple client environments
Strong troubleshooting, documentation, and communication skills
