M | 818-257-0906

Adi Liberman - Los Angeles, CA


Adi Liberman is the Principal and Founder of EOS. Prior to starting his own firm in 2006, Mr. Liberman was Executive Vice President and led the Public Affairs & Issues Management practice at the Edelman Public Relations Worldwide Los Angeles office. Mr. Liberman has more than two decades of experience providing high-level strategic counsel on environmental issues to corporations, non-profit organizations and government agencies. He has worked for the U.S. Department of Energy, the California State Legislature, the Los Angeles City Council, private sector corporations and non-governmental advocacy organizations. He has directed successful programs for corporate recycling in Los Angeles County and water conservation and recycling in the City of Los Angeles.


Prior to joining the City of Los Angeles in 1995, Mr. Liberman served as Executive Director for Heal the Bay, one the nation’s most effective and well-respected environmental advocacy organizations, compelling the region’s sewage plants to comply with environmental laws and creating public support for $4 billion in infrastructure improvements.


Mr. Liberman serves on the California Coastal Commission and is Vice-Chair of the City of Los Angeles’ Prop. O Oversight Advisory Council, which determines how $500 million will be spent to address water pollution issues. He has served as a Board member of the Ballona Wetlands Foundation, co-founder of the Coalition on the Environment and Jewish Life, and as a Board member of the Los Angeles League of Conservation Voters.


Mark Snowiss

M | 202-378-3382

Mark Snowiss - Los Angeles, CA

Senior Associate

Mark Snowiss is a Senior Associate at EOS. Prior to joining the firm in 2021, he reported on environmental issues for Voice of America (VOA) focusing on drought, water reuse and wildfire in the American West. His 10 years in journalism includes work for VOA in Washington, DC as well as NPR-affiliate KCRW 89.9 FM and Pacifica-affiliate KPFK 90.7 FM, both in Los Angeles.


Mr. Snowiss is a versatile communications manager adept at conveying complex information in a clear, engaging style. His experience fuses investigative reporting and public relations with UN liaison work in challenging environments. At PivotHound Communications, he designed and implemented a comprehensive media relations campaign that made national headlines, compelling United Airlines and the University of Southern California (USC) to reverse a $70 million naming rights deal for the Los Angeles Memorial Coliseum. Later, his outreach efforts for Powell Strategies elevated a new, innovative LA County program serving 300,000 at-risk veterans in need of housing, substance abuse intervention, job placement, and other services.


From 2000-2004, Mr. Snowiss served the post-war relief effort in Bosnia through his work for the UN Refugee Agency (UNHCR), International Rescue Committee (IRC) and other humanitarian organizations. He lived in Hungary through the fall of communism in the 1990s, where he promoted an internationally acclaimed American graduate school, Central European University (CEU).


Jennifer Amarant - Santa Clarita, CA

Manager of Operations and Projects

Jennifer Amarant is the Manager of Operations and Projects at EOS. She graduated from California State University, Northridge, where she obtained a bachelor’s degree in English and Creative Writing.