Marouen Zelleg

Critic
DISC Type : C

Co-Founder at Crestal

Singapore, Singapore

Overview

Marouen Zelleg is the Co-Founder of Crestal, building decentralized blockchain infrastructure. With a background in sales and business development at Polygon Labs and ConsenSys, he combines technical expertise from his Masters in computer science with a passion for customer-facing problem-solving. He previously achieved over 120% of his sales quota at OutSystems for two consecutive years.

Originally from Tunisia and having studied in France, Marouen recently relocated to Australia after spending 15 years in Singapore, which served as the backdrop for most of his professional journey. His personal experience growing up with centralized bureaucracy in Tunisia fuels his passion for the freedom that decentralized technology offers.

His motivation to enter the Web3 space came after realizing he didnt want to become "the uncle who still sells fax machines" by not upskilling.

Personality Overview

Precise

Negotiator

Critic

They like to do things independently and don’t look for support from others.  It is very likely that they will negotiate pricing or other important terms. Unless the value is proven by data, they are unlikely to value fancy features.

Topics They Care About

Decentralization's Impact
Driven by his personal experiences with centralized bureaucracy in his native Tunisia, he is passionate about how blockchain can transform economies and empower individuals.
Web3 Adoption
His career at Polygon Labs and ConsenSys focused on bringing Web3 to the masses and building strong partnerships to grow the developer and user ecosystem.
Blockchain Infrastructure
As Co-Founder of Crestal and a frequent panelist, he is focused on building the future of decentralized infrastructure and addressing scalability with Layer 2 solutions.

Media Appearances

with Marouen Zelleg, Co-Founder @ Crestal Network. Featured in YouTube

See Now

Work History

2-2024
Co-Founder at Crestal
9-2025
Advisor at crito
8-2023 - 2-2024
Head of Business Development - APAC at Polygon Labs
12-2021 - 8-2023
Strategic Sales Director at ConsenSys
1-2019 - 12-2021
Regional Sales Director at OutSystems

Education

2007 - 2011
Master's from Ecole Nationale Supérieure des Mines de Nancy
2005 - 2007
Bachelor from IPEST - Institut préparatoire aux études scientifiques et techniques

More Information

Social Presence :

Prographics :

Exp : 10 Location : Singapore, Singapore Job Level : Leadership Designation : Co-Founder at Crestal
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Insights For Selling To Marouen

During A Call Or A Meeting

DO's

  • Be formal and objective, they will appreciate it more
  • Use phrases like ‘expect X% improvement’, ‘data clearly shows’ etc.
  • Be ready for penetrating questions and critical examination of your pitch

DONT's

  • Avoid phrases like ‘trust me’, ‘others just love’ etc.
  • Don’t rush them till they have clearly gotten all the necessary information
  • Don’t try to give too many examples of other users, they like to make their own decisions

When Cold Calling

When Writing An Email

While Negotiating & Closing

    The secret to closing fast with Marouen is

  • Proven ROI, pricing and objective proof points are the factors that sway their decision.
  • Will you ever get a clear answer from Marouen

  • They are comfortable saying no if they are convinced that it is the correct decision.

Insights For Deal Planning

    How fast (or slow) will Marouen move?

  • Their decision-making is neither very fast nor very slow, they are somewhere in between.
  • Can Marouen take some risk or not?

  • They can take risks if their analysis shows that it would be worth it.

You And Marouen

Personality Compatibility


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