Unified Communications Engineer Job Description

Unified Communications Engineers are responsible for the platforms that modern organizations use to talk, meet, and collaborate. In most enterprises today, that means Microsoft Teams — but it often also means managing integration points with Cisco infrastructure, legacy PBX equipment in the process of being replaced, conference room video systems, and external contact center platforms.

The work spans design, implementation, and ongoing operations. On the design side, UC engineers architect how an organization's voice, video, and messaging platforms interconnect — how Teams Phone connects to the PSTN, how Zoom Rooms integrate with calendaring, how an acquired company's Webex environment gets federated with the parent company's Teams tenant. These are multi-month projects that require coordination across infrastructure, security, networking, and business stakeholders.

Implementation requires depth in multiple vendor platforms. Configuring a Teams Direct Routing deployment involves session border controller setup, carrier SIP trunk coordination, PowerShell-based voice routing policy creation, and dial plan testing across the full call flow from Teams client through SBC to carrier and back. Getting each hop correct requires systematic testing and the ability to read SIP traces when something goes wrong.

Operational work includes a steady flow of quality troubleshooting. Call quality issues are some of the most variable problems in enterprise IT — they depend on the user's network, the client device, the QoS configuration on every network segment the call traverses, the SBC configuration, and the carrier. Experienced UC engineers develop diagnostic approaches that isolate variables systematically rather than guessing.

As collaboration platforms have absorbed features previously handled by specialized tools — whiteboarding, file sharing, project management integrations — UC engineers increasingly manage the integration layer connecting these platforms to identity systems, compliance tools, and business applications.

Education:

• Bachelor's degree in computer science, information systems, or electrical engineering
• Many UC engineers enter from VoIP administration, network engineering, or general IT systems backgrounds

Certifications:

• MS-721 (Teams Voice Engineer Expert) — the primary Microsoft credential for Teams voice work
• MS-700 (Managing Microsoft Teams) — foundational Teams administration credential
• CCNP Collaboration — covers Cisco CUCM, Expressway, Webex, and Cisco Meeting Server
• CompTIA Network+ or Cisco CCNA — baseline networking credentials

Core technical skills:

• Microsoft Teams: phone system configuration, calling policies, call queues, auto-attendants, Teams Rooms
• Teams Direct Routing: SBC integration, voice routing policies, dial plan configuration, number management
• Session border controllers: AudioCodes, Ribbon, Oracle ACME Packet — configuration and trace analysis
• Cisco CUCM: dial plan, route patterns, gateways, Jabber configuration
• Cisco Expressway: MRA (mobile and remote access), B2B federation
• SIP protocol: message structure, response codes, SIP ladder diagrams, Wireshark analysis
• QoS: DSCP marking, bandwidth planning, voice/video traffic prioritization
• PowerShell: Teams PowerShell module for bulk provisioning, policy management, compliance reporting

Broader UC skills:

• Video conferencing infrastructure: Cisco Meeting Server, Webex infrastructure, Zoom Rooms management
• Contact center integration: Teams-based queuing, Genesys or Five9 integration with Teams
• Identity: Azure AD and Teams identity integration, guest access policies, external federation

Unified communications engineering is well-positioned for the medium term. The consolidation of voice, video, and collaboration onto cloud platforms is ongoing, and the migrations required — from legacy PBX systems, on-premises video infrastructure, and fragmented point solutions — require experienced engineers with platform depth and network understanding.

Microsoft Teams dominates workplace adoption statistics, and every Teams Phone deployment involves engineering work. Direct Routing implementations, in particular, require a combination of skills — SBC configuration, SIP troubleshooting, PowerShell automation, carrier coordination — that is not easily automated or commoditized. The supply of engineers who can do this work confidently is still smaller than enterprise demand.

The contact center integration space is creating adjacent demand. Cloud contact center platforms (Five9, Genesys Cloud, NICE CXone) are integrating deeply with Microsoft Teams and requiring UC engineers who understand both the collaboration platform and contact center architecture. Organizations running complex inbound calling operations need engineers who can manage that integration layer.

AI features in UC platforms are becoming a design and integration challenge in their own right. Teams Copilot, Webex AI Assistant, and similar features generate new questions about configuration, privacy policy, and integration with compliance recording systems. UC engineers who understand how these features work and how to configure them appropriately have a more interesting and valuable role ahead.

Salary growth has been above the general IT average, driven by Microsoft Teams adoption creating persistent demand for scarce skills. Senior UC engineers with end-to-end architecture experience and contact center depth are consistently among the higher-paid infrastructure specialists in enterprise IT.

Dear Hiring Manager,

I'm applying for the Unified Communications Engineer position at [Company]. I've spent five years as a UC engineer, the last three at [Current Employer] — a 4,000-person financial services company where I'm the primary engineer responsible for our Microsoft Teams Phone environment and our remaining Cisco CUCM infrastructure.

The project that best represents my current work is the Direct Routing deployment I designed and implemented over the past 18 months. We deployed dual AudioCodes SBCs in an active-active configuration with two SIP trunk carriers for geographic redundancy, migrated 2,400 users from CUCM to Teams Phone in waves, and ported approximately 800 DDI numbers from our legacy carrier. The final phase included configuring call queues and auto-attendants for our eight main business lines, which required working closely with operations leadership to map existing call routing logic into Teams policies.

I'm comfortable with both the Microsoft and Cisco stacks — I still manage the CUCM environment for our trading floor, which has specialized hardware requirements that Teams Phone doesn't support. Knowing both platforms helps in the troubleshooting and routing design work because I can compare behavior across systems when something isn't working as expected.

I hold MS-700 and I'm in the process of completing MS-721. I have CCNP Collaboration from earlier in my career and keep current with the Cisco side through the environments I manage.

I'd welcome the opportunity to discuss your UC roadmap and the challenges your team is working through.

[Your Name]