Jan Willem De Birk in

Jan Willem De Birk

Observer · DISC type ci
Founder at CodeReviewr
📍 Laren, North Holland, Netherlands

Jan Willem de Birk is the CTO at Brthrs and the Founder of CodeReviewr, with a background in Applied Science from Amsterdam University of Applied Sciences. Described by colleagues as a consummate professional, he is recognized for being up-to-date on the latest software trends and incredibly easy to work with.

He is a strong advocate for data privacy, ensuring his product CodeReviewr is fully hosted on EU servers to comply with GDPR.

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Experience
18 Years
Current Role
Founder
Job Level
Leadership
Location
Laren, North Holland, Netherlands
Personality Overview

How Jan shows up

Value Driven
Assertive
Example Seeker

They are generally strong communicators and are not easy to convince. They are likely to ask many questions and look heavily for supporting information. They can sound friendly and charming but can quickly change gears to become inquisitive and probing.

Priorities

Topics Jan cares about

AI-driven Development
He actively discusses the significant shift AI coding tools are causing in software engineering and personally uses tools like Claude for coding and writing.
EU Data Sovereignty
Emphasizes the importance of data locality for regulatory compliance, highlighting that his product, CodeReviewr, is hosted in Germany to align with GDPR.
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Career

Work history

11-2025
Founder
CodeReviewr
3-2025 - 11-2025
Strategic Advisor
GreenPT
1-2024
CTO
Brthrs Agency
1-2023 - 12-2023
Lead Software Engineer
KidsKonnect
1-2016 - 12-2022
CTO / Co-founder
Digital Chefs | Learning Technologies
In the press

Media appearances

No media yetWe could not find public media appearances for this person.
Education
2005 - 2009
Bachelor of Applied Science - BASc
Amsterdam University of Applied Sciences
Social presence
in
Behavioral profile

DISC profile (public)

c

Calculativeness (C)

Calculativeness (C) reflects the degree to which a person is likely to be cautious, systematic and analytical. Those scoring high tend to emphasise quality and accuracy.

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