Dr. Sybe Izaak Rispens

Activist
DISC Type : Cd

CEO and founder at Stealth Startup

Berlin Metropolitan Area, Germany

Overview

Dr. Sybe Izaak Rispens is the CEO and founder of a stealth startup, leveraging his deep expertise in AI and cybersecurity. An Oxford-educated leader with a PhD in the foundations of AI, he has held CISO roles in finance and healthcare. Colleagues describe him as an "exceptional expert" and "thought leader".

Driven by the motto "Curiosity is key! ", he combines his technical knowledge with a background in the philosophy of mind. He is a prolific writer, sharing his reflections on AI, security, and ethics on his personal blog. He has a reputation for being approachable and laughing easily.

He uniquely merges a PhD in AI foundations and philosophical training with top-tier cybersecurity certifications (CISSP, CISM) to advise on complex tech issues.

Personality Overview

Meticulous

Value Conscious

Observative

They focus on objectivity in a pitch and pay little attention to bells and whistles.  They respond well to confident salespeople. They don’t always try to control the conversation but neither do they like yielding it fully.

Topics They Care About

AI & Cybersecurity
Helps organizations navigate AI-related cyber risks by combining deep technical expertise in artificial intelligence with enterprise security leadership.
Cyber Risk Quantification
His current startup is developing Monte Carlo simulation models to quantify cyber risk and model potential business impact scenarios.
CISO Leadership
He writes about the importance of leadership skills over purely technical abilities for success as a CISO and focuses on industry challenges like executive burnout.

Media Appearances

Dr. has no verified media appearances

Work History

7-2025
CEO and founder at Stealth Startup
1-2025 - 7-2025
Global Chief Information Security Officer at Tentamus Group
5-2023
VIllager at Team8
10-2022 - 1-2025
Information Security Officer at Trade Republic Bank GmbH
9-2020 - 10-2022
Lead ICT and Security Risk Management at Klarna

Education

9-2024 - 12-2024
Oxford Executive Leadership Programme from Saïd Business School, University of Oxford
2002 - 2005
Doctor of Philosophy (PhD) from University of Groningen

More Information

Social Presence :

Prographics :

Exp : 17 Location : Berlin Metropolitan Area, Germany Job Level : Leadership Designation : CEO and founder at Stealth Startup
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Insights For Selling To Dr. Sybe Izaak

During A Call Or A Meeting

DO's

  • Ask them questions confidently while doing discovery, don’t be apologetic
  • Stress on the business value that your product offers
  • Be crisp while making the pitch

DONT's

  • Refrain from asking too many questions
  • Don’t expect them to change their mind quickly if they say no once
  • Don’t try to be an alpha salesperson, give them equal space

When Cold Calling

When Writing An Email

While Negotiating & Closing

    The secret to closing fast with Dr. Sybe Izaak is

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

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

Insights For Deal Planning

    How fast (or slow) will Dr. Sybe Izaak move?

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

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

You And Dr. Sybe Izaak

Personality Compatibility


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