Kate Stewart in

Kate Stewart

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Staff People Operations AI & Automations Lead at Horizon3.ai
📍 Oceanside, California, United States

Kate Stewart is an AI-native People Operations leader at Horizon3.ai, specializing in designing scalable systems and automation. A SHRM-Certified Professional from Utah Valley University, colleagues describe her as a strategic, thoughtful, and influential systems-thinker who excels at execution.

Kate is passionate about building the future of People Ops, serving as an advisor to early-stage HR tech companies with PeopleTech Partners. She is also an active member of Women Defining AI, where she contributes to industry thought leadership and practitioner connection.

She has a knack for building her own tools, including an interactive org chart visualizer and improved spreadsheet systems to solve operational challenges.

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Experience
15 Years
Current Role
Staff People Operations AI & Automations Lead
Job Level
Mid-senior
Location
Oceanside, California, United States
Personality Overview

How Kate shows up

Communication Style
Decision Approach
Work Preference

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Priorities

Topics Kate cares about

AI in People Ops
She designs and deploys AI agents and GPT-powered automation to reduce manual work, cut HR ticket volume, and improve overall team efficiency.
Workflow Automation
Passionate about turning chaotic processes into clean, reliable workflows, she uses a product mindset to test, measure, and scale what works.
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Career

Work history

2-2026
Staff People Operations AI & Automations Lead
Horizon3.ai
2-2026
Advisor
PeopleTech Partners
3-2025 - 2-2026
Manager, People Operations
Lattice
6-2024
Member
Women Defining AI
6-2024 - 3-2025
People Operations Program Manager
Lattice
In the press

Media appearances

Kate Stewart Joins Horizon3.ai as Staff People Operations – AI Automations. Featured in HR TODAY
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Education
2007 - 2014
Bachelor’s Degree
Utah Valley University
Social presence
in
Behavioral profile

DISC profile (public)

DISC behavioral profile

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