Dr. Simon Harrer

Questioner
DISC Type : c

Co-Founder and CEO at Entropy Data

Gerolzhofen, Bavaria, Germany

Overview

Dr. Simon Harrer is the Co-Founder and CEO of Entropy Data, a bootstrapped company spun off from INNOQ. With a Ph. D. in Computer Science, he is a passionate software developer, author of "Java by Comparison, " and a key figure in the Data Mesh community, having translated the foundational book into German.

Referred to by peers as a "brilliant software engineer" and a "clean code evangelist, " Simon is a father who is deeply interested in teaching and mentoring. He has served as an external lecturer, received a Good Teaching Award, and focuses on creating valuable learning experiences for junior developers through his writing and professional work.

He created and maintains several popular open-source tools, including Data Contract CLI and mob. sh for remote pair programming.

Personality Overview

Systematic

Price-Sensitive

Cautious & Analytical

They prefer to analyze every situation thoroughly.
  They generally do not appreciate an overfriendly approach and prefer to stay to-the-point. While they don't hesitate to ask questions, they are generally risk-averse and tend to be late adopters.

Topics They Care About

Data Mesh
He co-founded Entropy Data to build a Data Mesh Manager, translated the "Data Mesh" book to German, and frequently speaks on the topic at conferences.
Data Contracts
He is a creator and advocate for open standards, developing the popular open-source tool Data Contract CLI and championing the Open Data Contract Standard (ODCS).
Software Craftsmanship
His book, "Java by Comparison, " focuses on helping developers become "Java Craftsmen" by writing clean, concise, and maintainable code, a theme he often discusses.

Media Appearances

Data Contracts - INNOQ Podcast (featuring Dr. Simon Harrer, Co‑Founder & CEO of Entropy Data). Featured in Spotify

See Now

From Consultant to Founder: We are founding Entropy Data. Featured in INNOQ

See Now

Work History

8-2025
Co-Founder and CEO at Entropy Data
4-2018 - 7-2025
Senior Consultant at INNOQ
1-2016 - 8-2023
Software Engineer at Self-Employed
5-2017 - 7-2020
CEO and Founder at Simon Harrer GmbH
4-2019 - 9-2019
External Lecturer at Otto-Friedrich-Universität Bamberg

Education

2011 - 2017
Dr. in Computer Science from Otto-Friedrich-Universität Bamberg
2005 - 2010
Diplom Information Systems from Otto-Friedrich-Universität Bamberg

More Information

Social Presence :

Prographics :

Exp : 4 Location : Gerolzhofen, Bavaria, Germany Job Level : Leadership Designation : Co-Founder and CEO at Entropy Data
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Insights For Selling To Dr. Simon

During A Call Or A Meeting

DO's

  • Keep some extra margin in hand as they will likely negotiate the pricing
  • Emphasise more on facts and measurable benefits
  • Emphasize on objective proof of ROI, help them do a thorough evaluation

DONT's

  • Avoid rushing them, be polite and patient
  • Don’t try to be too friendly or informal with them
  • Don’t overhype the product/pitch, keep it measured

When Cold Calling

When Writing An Email

While Negotiating & Closing

    The secret to closing fast with Dr. Simon is

  • Ensuring that the product delivers ROI, cost-effective pricing and process compliance are very important for them.
  • Will you ever get a clear answer from Dr. Simon

  • It doesn’t come naturally to them but they can say no if they are not convinced.

Insights For Deal Planning

    How fast (or slow) will Dr. Simon move?

  • If they have the information that they need, they can move fast at making their decisions.
  • Can Dr. Simon take some risk or not?

  • They can take risk if they are convinced that they have analyzed the circumstances well.


You And Dr. Simon

Personality Compatibility


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