Senior Unified Communications Engineer - Cloud

Reyes Holdings • Rosemont, IL

2h

About The Position

This role provides end-to-end technical ownership and accountability for enterprise UCaaS and CCaaS platforms, including Webex Calling and Webex Contact Center. The engineer will lead the architecture, design, and execution of large-scale cloud migrations, transitioning from on-premise Cisco UC (CUCM, Unity, UCCX/UCCE) to cloud-based solutions. Responsibilities include designing, implementing, and maintaining SIP gateways, Cisco CUBE SBCs, PSTN integrations, and E911 services. The position involves defining and enforcing enterprise standards, developing architecture diagrams and migration plans, and providing technical leadership and mentorship. The engineer will also lead contact center architecture and integrations, support AV and video collaboration, and own global call routing, resiliency, failover, DR, and capacity planning.

Requirements

• Bachelor’s Degree in Computer Science, Information Technology, Engineering, or related field and 4 to 6 years of progressive experience in enterprise Unified Communications or High School Diploma/General Education Degree (GED) with 7 to 9 plus years of specific experience
• Experience working in multi-vendor and hybrid environments (e.g., Cisco, Microsoft Teams)
• Demonstrated experience leading enterprise or global cloud migration initiatives
• Drive automation and standardization using scripting and configuration tools (e.g., Ansible, Terraform, Python, PowerShell)
• Lead lifecycle management activities including patching, EOL/EOS refreshes, vulnerability remediation, and platform upgrades
• Proven ability to lead technically, mentor engineers, and influence architectural decisions
• Deep expertise with Webex Calling, Webex Contact Center, and cloud/hybrid UC architectures
• Strong knowledge of SIP, RTP/SRTP, SBC configuration, PSTN design, and global voice routing
• Advanced experience with Cisco UC technologies including CUCM, Unity Connection, UCCX/UCCE, Expressway, CUBE, and SIP-based carrier integrations
• Familiarity with security best practices for cloud migration

Nice To Haves

• Bachelor’s Degree
• Cisco certifications such as CCNP Collaboration, CCIE Collaboration, or equivalent
• Familiarity with ITIL-based service management and operational maturity models

Responsibilities

• Provide end-to-end technical ownership and accountability for enterprise UCaaS and CCaaS platforms, including Webex Calling and Webex Contact Center
• Lead the architecture, design, and execution of large-scale cloud migrations, transitioning from on premise Cisco UC (CUCM, Unity, UCCX/UCCE) to cloud-based solutions
• Design, implement, and maintain SIP gateways, Cisco CUBE SBCs, PSTN integrations, and E911 services (Cisco Emergency Responder, RedSky, Intrado)
• Define and enforce enterprise standards, reference architectures, and best practices for cloud, hybrid calling, SBCs, and carrier connectivity
• Develop and maintain architecture diagrams, migration plans, risk assessments, runbooks, and operational documentation
• Provide technical leadership and mentorship to engineers, acting as an escalation point and subject-matter expert
• Lead contact center architecture and integrations, including IVR, ACD, WFM, CRM integrations, analytics, and reporting
• Support AV and video collaboration integrations aligned with enterprise UC platforms
• Own global call routing, resiliency, failover, DR, and capacity planning for voice and contact center environments
• Other projects or duties as assigned

Benefits

• Medical
• Dental
• Vision coverage
• Paid Time Off
• Retirement Benefits
• complimentary Health Screenings

What This Job Offers

• Job Type: Full-time
• Career Level: Senior