Petros Perselis

Judge
DISC Type : Dc

SVP Global Customer Success at Hack The Box

New York, New York, United States

Overview

Petros Perselis serves as the SVP of Global Customer Success at Hack The Box, where he leads the teams supporting over 800 global enterprise, government, and university customers. A graduate of Stanford and Brown University, his expertise includes go-to-market strategy, financial analysis, and scaling teams in the SaaS industry.

Originally from Kassos island in Greece, Petros is deeply involved in the Hellenic community. He serves as a mentor for Endeavor Greece, is the Treasurer for the Desmos Policy Institute, and actively volunteers with Brown Universitys alumni leadership. In his free time, he enjoys playing soccer.

He was named to the Greek America Foundations "40 Under 40" list in 2022, recognizing his professional achievements and community leadership.

Personality Overview

Features Driven

Fast But Wary

Objective Thinker

They like to be in a position where they can control the conversation and terms.  They are not focused on building rapport and relationships. They are very proud of what they do.

Topics They Care About

Customer Success
As the SVP of Global Customer Success, he focuses on platform adoption, value realization, customer retention, and expansion for a large portfolio of clients.
Cybersecurity Upskilling
His work at Hack The Box, a leading cybersecurity upskilling platform, centers on empowering organizations to enhance their cyber capabilities through continuous training.
Greek Economic Growth
He actively contributes to policy recommendations for Greece's economic growth, including co-authoring a proposal for a "Talent Visa" to attract skilled professionals.

Media Appearances

Mastering momentum: A look back at HTB 2025 Revenue Kickoff event. Featured in Hack The Box Blog

See Now

Work History

1-2026
SVP Global Customer Success at Hack The Box
5-2024
Portfolio Advisor at Northzone
3-2024 - 12-2025
Vice President of Customer Success at Hack The Box
4-2023
Treasurer at Desmos Policy Institute
3-2023 - 12-2023
Advisor at OpenView

Education

2011 - 2012
MSc from Stanford University
2008 - 2010
BSc from Brown University

More Information

Social Presence :

Prographics :

Exp : 14 Location : New York, New York, United States Job Level : Leadership Designation : SVP Global Customer Success at Hack The Box
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Insights For Selling To Petros

During A Call Or A Meeting

DO's

  • Help them weigh the risks by sharing objective proof points without becoming too analytical
  • Get to the point quickly instead of spending time doing small talk
  • Make sure that you circle back fast on any action items, it wins their trust

DONT's

  • Don’t be in a rush to invite them for a social meet and greet
  • Do not back off when challenged, respond with a confident, objective answer instead
  • Do not hesitate from asking counter questions, just avoid challenging their authority

When Cold Calling

When Writing An Email

While Negotiating & Closing

    The secret to closing fast with Petros is

  • Confidence in impact is paramount to them, followed by a sense of achievement and ROI.
  • Will you ever get a clear answer from Petros

  • If they are not convinced, they will have no hesitation in telling you the same.

Insights For Deal Planning

    How fast (or slow) will Petros move?

  • They can take decisions very fast if you manage to convince them.
  • Can Petros take some risk or not?

  • The risks don’t matter much to them.

You And Petros

Personality Compatibility


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