Senior Unified Communications Engineer Cisco CUCM & Microsoft Teams

Client is seeking a skilled network engineer specializing in Unified Communications (UC) to design, implement, support, and optimize enterprise voice, video, messaging, and collaboration services.

This role will support multiple platforms, including Cisco Unified Communications Manager (CUCM), Cisco Webex, Microsoft Teams, and enterprise calling solutions.

The engineer will work closely with network, security, telecom, infrastructure, and service desk teams to maintain reliable, secure, and high-quality communication services., Administer Microsoft Teams voice features through 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, MOS, QoS, and platform-specific diagnostic tools.

Configure and maintain network services that support real-time communications, including QoS, VLANs, routing, DNS, DHCP, NAT, and firewall rules.

Support voice gateways, SIP trunks, SBCs, desk phones, conference-room systems, headsets, and soft clients.

Manage user provisioning, licensing, migrations, onboarding, and offboarding for calling and collaboration services.

Monitor platform availability, capacity, performance, and call quality.

Perform system upgrades, patches, 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.

Work with telecommunications carriers and technology vendors to resolve service issues.

Participate in an on-call rotation and provide support for critical incidents when required.

General Qualifications

Bachelor s degree (or equivalent professional experience) in:

o Information technology,

o Networking,

o Telecommunications, or

o Related field(s)

Strong analytical, documentation, communication, and incident-management skills

General Technical Skills

At least three ( 3) years of experience supporting enterprise networking and/or UC environments

Strong knowledge of SIP, RTP, SRTP, SDP, TLS, codecs, dial plans, and PSTN technologies

Solid understanding of TCP/IP, routing, switching, VLANs, QoS, DNS, DHCP, NAT, VPNs, and firewalls

Experience diagnosing voice-quality and connectivity issues using packet captures, call logs, and monitoring tools

Familiarity with identity, authentication, certificates, and cloud service integrations

Specific Technical Skills

Experience administering Microsoft Teams, Teams Phone, Direct Routing, and/or Operator Connect

Hands-on experience with Cisco collaboration technologies, including but not limited to:

o CUCM,

o Unity Connection,

o Webex,

o CUBE, and/or

o Cisco voice gateways

Desired Skills

Experience migrating from on-premises telephony to cloud calling platform(s), including but not limited to Microsoft Teams Phone and Webex Calling

Knowledge of hybrid Cisco and Microsoft collaboration environments

Experience with PowerShell, APIs, Python, and/or other automation tools

Familiarity with ITIL practices and enterprise change-management processes

Relevant certifications, such as:

o Cisco CCNA, CCNP Enterprise, and/or CCNP Collaboration

o Microsoft 365 Certified: Teams Administrator Associate

o Microsoft Certified: Teams Voice Engineer Expert (or current equivalent)

o ITIL Foundation