Sienna Bertamini

Sienna Bertamini is a Case Manager at Ellis, where she supports the legal team by overseeing client case preparation. She brings experience in immigration policy, asylum operations, and refugee advocacy, having collaborated with government, non-profit, and research organizations across Asia, Europe, and the United States. Before joining Ellis, Sienna worked with the New York City Mayor’s Office of Asylum Seeker Operations, where she supported policy research, demographic analysis, and site coordination for citywide shelter systems. She has also worked with NGOs including Justice Centre Hong Kong, focusing on non-refoulement claims, and the Quick Response Team, a Greek-Italian organization serving refugee communities in Thessaloniki. Sienna holds dual degrees in Politics and Government from Sciences Po Paris and in Sustainable Development from Columbia University, where she graduated Magna Cum Laude and was elected to Phi Beta Kappa and the Columbia Honors Society.