Simon Mullis in

Simon Mullis

Go-getter · DISC type d
Advisory Board Member | Technology & Strategy at GUST-AI Armada by SlimCloud
📍 Amsterdam Area, Netherlands

Simon is a Principal Security Architect at SentinelOne and a seasoned CTO, recognized for his expertise at the intersection of cybersecurity and AI. Educated at the University of Sussex, he is a founding CTO and respected public speaker. Colleagues describe him as technically strong, knowledgeable, and results-oriented.

Originally from the UK and now based in Amsterdam, Simon is married with two children. Outside of his deep involvement in technology, he is a passionate cook and has been playing the bass guitar for over 30 years, demonstrating a long-standing commitment to his creative pursuits.

He has been actively involved with the internet since 1994, using bulletin boards across Europe long before the web became mainstream.

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Experience
28 Years
Current Role
Advisory Board Member | Technology & Strategy
Job Level
Senior
Location
Amsterdam Area, Netherlands
Personality Overview

How Simon shows up

Vision Oriented
Decisive
Self-Confident

They respond well to confident salespeople. They care equally about the product and its potential impact. They can be nudged to make faster decisions by offering what they value.

Priorities

Topics Simon cares about

Cybersecurity & AI
His current work at SentinelOne is at the intersection of Cyber Security and AI, and he advises an AI agent startup, GUST-AI.
Encrypted Security
As the founding CTO of Venari Security, he focused on securing the encrypted attack surface and developing cryptographic discovery tools.
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Career

Work history

1-2026
Advisory Board Member | Technology & Strategy
GUST-AI Armada by SlimCloud
9-2025
Principal Security Architect
SentinelOne
6-2024
Advisory Board Member | Technology & Strategy
EmberOT
5-2021 - 9-2025
Chief Technology Officer
Venari Security
3-2018 - 5-2021
Director, Technical Account Management
Tanium
In the press

Media appearances

EmberOT Welcomes Simon Mullis as Technology & Strategy Advisory Board Member. Featured in EmberOT
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EmberOT Welcomes Simon Mullis as Technology & Strategy Advisory Board Member. Featured in Einpresswire
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Education
1993 - 1996
Bachelor of Science (BSc)
University of Sussex
1992 - 1993
Français pour non Francophone
Université Laval
Social presence
in
Behavioral profile

DISC profile (public)

d

Dominance (D)

Dominance (D) reflects how goal and task oriented a person is, and their ability to accomplish results irrespective of how demanding the circumstances might be. Those scoring high tend to be motivated by winning, competition, and success.

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