Contact
JH

John Hart

Manager, Technology Product Management
Marriott International
with Holkin Design

Enterprise voice product manager who also builds the tools my teams need — like Voice Studio, an in‑house app that ships IVR/IVA prompts the same day, no outside vendor.

See my work → Resume
Portfolio

Recent projects & current work

20+yrs hospitality & service
10+yrs project mgmt
5+yrs product
Core skills
Product ManagementAgile Project ManagementAgentic & Conversational AIAI Platform ArchitectureAI Governance & ComplianceRed‑Team & AI SecurityPrompt EngineeringUI/UXVoice ChannelBrand StrategyCCaaSIncident ManagementFrontendBackendData AnalyticsPrivacy by Design (PIPEDA)Vendor & BudgetOrganizational DevelopmentBusiness Experience ManagementCross‑Functional Team Collaboration Product ManagementAgile Project ManagementAgentic & Conversational AIAI Platform ArchitectureAI Governance & ComplianceRed‑Team & AI SecurityPrompt EngineeringUI/UXVoice ChannelBrand StrategyCCaaSIncident ManagementFrontendBackendData AnalyticsPrivacy by Design (PIPEDA)Vendor & BudgetOrganizational DevelopmentBusiness Experience ManagementCross‑Functional Team Collaboration
Enterprise Work
Marriott
Enterprise

Voice Channel Modernization

Routing, IVR/IVA & CCaaS across 20+ global contact centres.

→ Agentic AI Enablement
Toolkit

Agentic AI Enablement

Directing AI agents like Cursor to build real tools — and running production AI concierges with reporting, security & analytics built in.

→
Studio Work
byHolkinDesign

Client sites, internal tools and products I've built end‑to‑end — same motion as my enterprise work: ambiguity in, shipped product out.

Voice Studio
Product · Voice

Voice Studio

The IVR/IVA authoring app I built for my own contact‑centre teams — telephony‑grade prompts, same day, no outside vendor.

  • Multi‑Language via DeepL
  • Brand Voice Profiles & Pronunciations
  • Compare Voices · Multi‑Segment Editing
  • Self‑Serve · Shipped v1.1
→ Product Command
Product · Internal Tool · PM Command Center

Product Command

Grew from an AI JIRA‑intake tool into a self‑contained Product Manager command center — one portable app for the whole product workflow.

  • AI Intake → JIRA Epic & Stories
  • Live JIRA dashboard & metrics
  • Sprint Map · Health Checks
  • Activity‑Audit Console (CXone)
  • Release Notes · Shipped v1.1
→
Same motion, other domains
KD Collectibles
Concept · Web + AI

KD Collectibles

A concierge‑led grading experience — “The Card Curator,” on 24/7.

→ The Nook
Client · Web + Booking

The Nook

Business site redesign with a built‑in booking flow.

→ PowerHouse Dance Company
Client · Web + AI

PowerHouse Dance Company

Studio redesign with an “Ask PDC” AI assistant.

→ M.S. Davidson
Concept · Web Experience

An Author Web Experience

A living page for novelist M.S. Davidson — it re‑skins between his two worlds and measures its own readers.

→ 4TRESS
Game · Brand

4TRESS

Fortress‑defense in a living, generated world — now the waves push back.

→
Recent Highlights