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Judith Rensing

Judith Rensing

Philanthropy, Talent, Communications, and Effective Altruism Leader

London, England, United Kingdom
Joined June 2025

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Summary

Judith Rensing is a key leader and strategist in the effective altruism movement, particularly focused on empowering high-impact philanthropy. As Chief of Staff at Charity Entrepreneurship/Ambitious Impact (AIM), she co-runs the AIM Grantmaking Program, oversees staff hiring, and directs predictive vetting processes to identify and train top charity founders. Her work at CE/AIM aims to launch new, highly effective charities by finding the best ideas and equipping talented individuals to implement them, often surpassing the cost-effectiveness of established charitable interventions. ambitiousimpact+5
With a strong background in philosophy from the University of Münster, Judith applies a scientific and analytical mindset to charity entrepreneurship. She co-founded High Impact Athletes, demonstrating her hands-on experience in launching and scaling effective non-profits. Her expertise spans talent acquisition, communications, and operations, making her adept at building and nurturing organizations from the ground up within the effective altruism ecosystem. theorg+3
Judith is an active contributor to the Effective Altruism community, frequently sharing insights on career paths in high-impact non-profits and participating in discussions on talent acquisition within the sector. She is also a co-author of a forthcoming publication titled 'How to Launch a High-Impact Foundation,' further solidifying her thought leadership in impactful philanthropy. effectivealtruism+3

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Education

Notes

JBJacintha Baassaid
JRJudith Rensing
is one of the most impactful professionals they've worked with at a charity funding foundation.

Jan 20, 2026

LVLarissa Vaughan-Rowesaid
JRJudith Rensing
is one of the most promising early-career leaders they've worked with in mission-driven settings.

Nov 6, 2025

TSTazik Shahjahansaid
JRJudith Rensing
is one of the most thoughtful and effective generalists they know when it comes to finding, evaluating, and supporting mission-driven people.

Oct 16, 2025

CLChristopher Little-Savagesaid they've seen
JRJudith Rensing
identify and support high-potential entrepreneurs or leaders in the effective altruism or nonprofit space.

Oct 16, 2025