Unified Communications Engineer

Radiant Digital; Arlington (VA); Hybrid; USD 90,000 - 150,000; Full time

Job summary

Radiant Digital is seeking a UCaaS Telecommunications Engineer to oversee the transition from Cisco to Microsoft Teams Phone. This role, based in Arlington, VA, requires extensive experience in telecommunications and IT infrastructure, providing crucial support for integrating voice services across departments.

Qualifications

• 10+ years in telecommunications with specific technologies.
• 3+ years hands-on experience with Microsoft Teams Phone.
• Strong experience in migrating from Cisco Call Manager.

Responsibilities

• Implement and support the migration to Microsoft Teams Phone.
• Configure and troubleshoot Microsoft Teams voice network.
• Decommission legacy Cisco telephony equipment.

Skills

PSTN

PBX

VoIP

cloud voice services

SIP

dial plans

LAN

routing

switching

network security

Microsoft Teams Phone

Cisco Call Manager

Audiocodes gateways

Job description

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Job Title: UCaaS Telecommunications Engineer (Microsoft Teams Phone)

Location: Arlington, VA (Hybrid – Onsite support as required)

Duration: Up to 12 months

Position Overview

Arlington County is seeking an experienced UCaaS Telecommunications Engineer to support its enterprise-wide transition from an on-premise Cisco voice system to a cloud-based Microsoft Teams Phone solution. This is a hybrid role, requiring in-person support as needed.

You will work closely with the UCaaS Program Manager and other project staff to deliver critical components of this migration, which includes integrating analog devices, decommissioning legacy infrastructure, and supporting voice services across various departments.

Key Responsibilities

• Implement and support the migration from Cisco Call Manager to Microsoft Teams Phone
• Configure, deploy, test, and troubleshoot Microsoft Teams voice network infrastructure
• Decommission legacy Cisco telephony equipment per County policy
• Support ancillary voice services such as call queues, paging, and courtroom voice applications
• Maintain and update Poly desk phones (firmware/software)
• Provide operational support for MS Teams Phone during and post-migration
• Develop and maintain documentation including network diagrams, SOPs, and implementation guides
• Collaborate with vendors, Program Manager, and internal departments to drive project success
• Recommend and implement voice service improvements as needed

Required Skills and Experience

• 10+ years in telecommunications: PSTN, PBX, VoIP, cloud voice services, SIP, circuits, dial plans
• 10+ years in IT infrastructure: LAN, routing, switching, network security
• 3+ years hands-on experience with Microsoft Teams Phone or similar UCaaS/CCaaS systems
• Strong experience migrating from Cisco Call Manager to cloud-based voice systems
• Experience with Audiocodes gateways and analog device integration
• Proven ability to work with both technical and non-technical stakeholders
• Excellent documentation and communication skills

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Contract

Job function

• Industries

  IT Services and IT Consulting

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