Ariel Platt


Extroverted listener. Energized facilitator. Coast-to-coast code switcher. Wannabe park ranger. Bread whisperer.

Ariel Platt (he/him) is a Director at Third Plateau, where he supports clients to realize their visions for greater impact and more just realities. With nearly ten years of experience working in the government, nonprofit and private sectors, Ariel leverages a passion for facilitation, relationship-building, project management and meaning making to support change makers in a variety of capacities.

Before joining Third Plateau, Ariel worked at Rosov Consulting where he conducted formative and summative evaluations to measure impact for a broad array of Jewish organizations focused on social justice, youth programming, campus networks, leadership development, and teacher training. Ariel also worked for the US Department of Justice, supporting trials focused on public corruption, terrorism, and fraud. Outside of work, Ariel serves as a strategic advisor for a start-up synagogue in Philadelphia.

Ariel holds a B.A. in Philosophy from Columbia University and a B.A. in Rabbinic Literature from the Jewish Theological Seminary of America. He speaks Hebrew, Spanish, and a little bit of French. Born and raised in Berkeley, Ariel now lives with his partner in Philadelphia, where they love to play tennis and explore the city’s vibrant culinary scene. Ariel is a food-lover at heart with a particular passion for baking bread. He has baked professionally and remains thoroughly enamored by the feeling of pulling fresh loaves out of the oven to share with friends, family, and colleagues.