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Tammy Berg

@tammyberg

I lead enterprise telephony migrations, cutovers, and unified communications implementations at scale.

I've led Kroger's enterprise telephony modernization, completing 500+ retail conversions and 12 manufacturing and distribution facility conversions from legacy BCM/Cisco systems to OST and Microsoft Teams.

I own conversion lifecycles from equipment ordering through cutover, testing, legacy cleanup, and operational handoff. I also coordinate DID ports, configure OST and Teams environments, and build auto attendants, call queues, routing, voicemail, and endpoint provisioning.

Previously at Castle & Cooke Mortgage, I delivered 1,200+ telecom and data projects across 89 locations, helped save approximately $275,000 annually, and deployed Zoom six months ahead of schedule. I bring hands-on voice engineering, carrier coordination, and technical project leadership to complex enterprise migrations.

Experience

Work history, roles, and key accomplishments

Current

Senior Consultant, Project Delivery

Current

Deloitte

Mar 2026 - Present (6 months)

Leads complex enterprise telephony modernization projects, including 500+ retail conversions and 12 mission-critical facilities, coordinating DID ports, cutovers, and stakeholder communication.

FreePBX Microsoft Teams Zoom Fuze VoIP SIP T1 PRI DID Porting Auto Attendants Phone Queue Call Flow ServiceNow Jira

Technical Project Coordinator II, Telecommunications

TEKsystems

Mar 2024 - Mar 2026 (2 years)

Coordinated technical projects and implementation for enterprise telephony modernization, managing schedules, milestones, and vendor coordination.

FreePBX Microsoft Teams Zoom Fuze VoIP SIP T1 PRI DID Porting Auto Attendants Phone Queue Call Flow ServiceNow Jira

Technical Project Manager

Castle & Cooke Mortgage

Apr 2019 - Apr 2023 (4 years)

Directed 1,200+ telecom and data projects across 89 branches, coordinated migrations, and implemented standards that reduced errors and support tickets.

Fuze Zoom Microsoft Teams VoIP Polycom Cisco Meraki Project Management Vendor Management Process Improvement

Project Coordinator

Castle & Cooke Mortgage

Oct 2016 - Apr 2019 (2 years 6 months)

Coordinated telecom and data installation, migration, and configuration projects, supporting platform configuration and issue resolution.

Fuze Zoom Microsoft Teams VoIP Polycom Cisco Meraki Project Coordination

Telecom Project Coordinator

CallTower

Nov 2015 - Oct 2016 (11 months)

Coordinated cloud unified communications implementation, migration, and offboarding for enterprise customers, managing circuits, DIDs, and carrier coordination.

Unified Communications VoIP SIP T1 PRI DID Porting Carrier Coordination Project Coordination