Simon Mullis

Go-getter
DISC Type : d

Advisory Board Member | Technology & Strategy at GUST-AI Armada by SlimCloud

Amsterdam Area, Netherlands

Overview

Simon Mullis is a Principal Security Architect at SentinelOne, specializing in the intersection of AI and cybersecurity. A former founding CTO with deep expertise in endpoint security and post-quantum cryptography, he is a respected public speaker. Colleagues describe him as technically strong, knowledgeable, and results-oriented.

He once demonstrated how to build a botnet in under 15 minutes to showcase cybercriminal techniques for security vendor FireEye.

Personality Overview

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.

Topics They Care About

Generative AI Security
His current work at SentinelOne focuses on enabling secure GenAI adoption at scale, and he speaks internationally on the intersection of AI innovation and security risk.
OT & ICS Security
Serves as a technology and strategy advisor for EmberOT, a company specializing in security for critical infrastructure and industrial control systems (ICS).
Advanced Cryptography
As the founding CTO of Venari Security, he focused on securing encrypted traffic and has specific expertise in developing post-quantum cryptography platforms.

Media Appearances

Simon has no verified media appearances

Work History

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

Education

1993 - 1996
Bachelor of Science (BSc) from University of Sussex
1992 - 1993
Français pour non Francophone from Université Laval

More Information

Social Presence :

Prographics :

Exp : 28 Location : Amsterdam Area, Netherlands Job Level : Senior Designation : Advisory Board Member | Technology & Strategy at GUST-AI Armada by SlimCloud
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Insights For Selling To Simon

During A Call Or A Meeting

DO's

  • Make sure that they have the necessary authority, they could present false stature sometimes
  • Stress on the business value that your product offers
  • Ask them questions confidently while doing discovery, don’t be apologetic

DONT's

  • Don’t expect them to change their mind quickly if they say no once
  • Do not give up if they are not convinced, try again with a different approach
  • Avoid repeating yourself or making generalizations

When Cold Calling

When Writing An Email

While Negotiating & Closing

    The secret to closing fast with Simon is

  • Belief in the product plays an important role, followed by objective proof and testimonials.
  • Will you ever get a clear answer from Simon

  • They may hesitate slightly, but if they are not convinced, they will say no.

Insights For Deal Planning

    How fast (or slow) will Simon move?

  • Their decision making speed is somewhere in the middle.
  • Can Simon take some risk or not?

  • They can take risks only after they have analyzed the advantages and disadvantages.

You And Simon

Personality Compatibility


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