About Us - Constance Visser Witman

Project Manager, Philanthropy

Constance Visser Witman is a project manager for the philanthropy team. She works closely with senior philanthropy advisors to guide philanthropists in funding innovative solutions to the climate crisis.

Constance’s professional endeavors have been rooted in nonprofits and academic institutions with a focus on energy and sustainability. Prior to joining CLI, Constance served as program and development associate at Earth Innovation Institute. Previously, she administered grants for research laboratories in France and Switzerland.

Constance holds an MA in European Studies from Université Aix-Marseille. She is passionate about hiking and waste reduction. Based in the Bay Area with her husband and daughter, Constance is committed to doing whatever she can to preserve our planet’s wilderness for future generations.