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Alexandra Bos

Alexandra Bos

Co-Founder & CEO at Catalyze Impact, focused on AI safety

catalyzeimpact
Netherlands
Amsterdam, Netherlands
Joined November 2025
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Summary

Alexandra Bos is a co-founder and CEO of Catalyze Impact, a non-profit organization dedicated to incubating new organizations in the AI safety and security field. Her work involves leading strategic direction, fundraising, program development, and mentoring emerging founders, stemming from her earlier prioritization research in AI Safety. catalyze-impact+2
She previously founded and led TEDxLeidenUniversity from 2021 to 2022, where she gained significant experience in event organization, team leadership, project management, and fundraising, skills she now applies to her entrepreneurial endeavors in AI safety. effectivealtruism+1
Alexandra holds a cum laude Bachelor's degree in Liberal Arts & Sciences / Global Challenges with a major in Governance, Economics and Development from Leiden University College The Hague. Her academic work included a thesis on the scope insensitivity bias, reflecting her interest in cognitive science and effective decision-making for global impact. catalyze-impact+1
Committed to impactful entrepreneurship, Alexandra aims to create the largest positive impact possible, a goal evident in both her founding of Catalyze Impact and her academic focus on biases that affect effective altruism. effectivethesis+1

Work

Education

Writing

How to get EA ideas onto the TEDx stage

January 1, 2023

A post discussing strategies for individuals to participate in TEDx events by presenting EA-aligned ideas or by organizing TEDx events themselves. It draws on her experience as a lead organizer for TEDxLeidenUniversity.

Favicon imageforum.effectivealtruism.org

The Scope Insensitivity Bias: The Effects of Debiasing Interventions and a Range of Factors on How Insensitive We Are to the Size of Problems

October 1, 2022

Her Bachelor's thesis investigating the scope insensitivity bias, a cognitive phenomenon where people don't proportionally increase their concern for problems as their scale grows. The research explored interventions to reduce this bias and factors influencing its strength.

Favicon imageeffectivethesis.org

Hobbies

Alexandra has engaged in musical studies, specifically playing the cello.

Notes

MZMick Zijdelsaid they've seen
ABAlexandra Bos
successfully build or lead an organization focused on advancing AI safety.

Nov 28, 2025