Sienna Girgenti has centered her career around intentional, high-impact relationship building, program management, and immersive experiences. She joined Scott Circle Events in 2021, bringing with her fourteen years of experience across the legislative, diplomatic, and non-profit sectors.

In her current role as managing director of Scott Circle Events, Sienna is responsible for design and execution of mission-driven events for the company’s largest client portfolio, the Jewish Federations of North America. In this capacity, she manages the end-to-end lifecycle of operations across multiple programs, navigating seamlessly between generating big ideas, driving process improvement, and executing event details. In her personal time, Sienna consults for the Memorial Foundation for Jewish Culture, where she has developed innovative virtual and blended learning modules and scaled leadership pipelines for a global network of over 1,000 alumni of the Foundation’s flagship Nahum Goldmann Fellowship.

Sienna has built a reputation for thinking strategically and expansively at the nexus of purpose and practice. She previously served as program director for strategic engagement at B’nai B’rith International where she was recognized as a leader in the creative development of compelling programs and cultural diplomacy initiatives. During her tenure, she oversaw dozens of special functions annually—including VIP delegations, immersive intergenerational exchanges abroad, fundraising and business development events, and policy conferences—driving meaningful impact through advocacy, education, and storytelling.

A native of Philadelphia, PA, Sienna graduated with honors from the American University where she received a Bachelor of Arts in International Studies.