Officers and members of CVC's Global Board volunteer their time for a minimum of two years. They organize and execute monthly events; provide on-demand assistance to members and chapter leads around the world; and liaise and develop partnerships with regional alumni clubs. They're the "glue" that keeps our community up and running.



Ryan MacCarrigan, Global President


Ryan is a San Francisco-based Lean Startup coach, consultant, and university instructor with senior leadership experience at technology startups in New York City, San Francisco, and Silicon Valley.

Prior to founding his consultancy LeanStudio, Ryan was the head of marketing at Advisor and Lean Startup Machine. He has been a speaker and facilitator at Lean Startup Week, the Startup Marketing Conference, Singularity University, and numerous other events. He was the recipient of Xero’s "Marketing Innovation Award" in 2013. Ryan previously served as West Coast President of CVC (2016-2017) after incorporating and leading the San Francisco chapter (2013-2015).

He is a 2008 graduate of Columbia College, where he served as a Senior Editor for two undergraduate literary magazines: Quarto and The Columbia Review.

Courtland Thomas, Global VP & NYC Chapter Lead


Courtland Thomas is a marketing and growth advisory partner to enterprises and startups focused on building superior shopping experiences for their customers. He has built and led customer acquisition, retention, and customer intelligence strategies across a myriad of industries, including Luxury Apparel & Goods, Artificial Intelligence, Retail, Food, and Consumer-Packaged Goods. He resides in Manhattan, and travels to San Francisco and Chicago often.


Manish Sinha, San Francisco Chapter Lead


Manish is a Bay Area-based full stack engineer. He has consulted for numerous clients including Kleiner Perkins, UBS, Credit Suisse, and TIAA. Before that, he was a co-founder of an equipment sharing startup, a technology associate at Morgan Stanley and a staff assistant at the White House during the Obama administration. In his spare time, he likes to teach high school students how to code and play basketball. He has an M.S. in Computer Engineering from Columbia University.


Leigh-Ann Heidelberg, Head of Content


Leigh Ann is a New York City based hospitality professional and B.A. candidate in Economics at Columbia. Originally from Arkansas, she relocated to New York to attend The American Musical and Dramatic Academy then pursuing a career as an actress and singer, but found that she loved the production side of the industry far more. Eventually finding a passion for the food and beverage industry she changed routes and decided to attend Columbia. She is currently building a mezcal brand as a partner and brand ambassador alongside bar management and her Columbia degree.


Roope Marttila, Venture Engagement Lead


Roope is an investor and a devoted startup enthusiast. Before graduating from Columbia Law School, he was born and raised in Finland, the birthplace of Linux, Angry Birds, Nokia—and the sauna. In 2013, Roope left the country that is often ranked as the happiest in the world to pursue his passion for early-stage ventures. His first job in New York, however, was to work as a diplomatic trainee commenting on U.N. resolutions on the matters of gender equality and human rights and drafting speeches for the U.N. Ambassador of Finland. Since then, he has gone back to working with entrepreneurs and VC-backed startups. Currently, he runs his own legal AI company, advises other entrepreneurs and investors, and consults companies like Google on workflow quality and automation. He loves New York.


Esther Pang, Global Communications Liaison


Esther is the founder of Climate Curator, “curated for the naturally curious”, which publishes bi-monthly original content to explore curated themes and their relationships with climate change through science, innovation, and people lenses. Previously, she worked for more than a decade in project management and governance roles at Deutsche Bank and Morgan Stanley in New York City and London. She is on the board for Columbia First-Generation & Low-Income Alumni Network, Earth Institute’s Sustainability Management Alumni Board, and Hollaback!, a global people-powered movement to end harassment. She received her B.S. in Communications from New York University, and M.S. in Sustainability Management from Columbia University.




Kevin W. Tung — 2016-2017 Global President

Ryan MacCarrigan — 2016-2017 West Coast President

Dawn Quaker — 2016-2017 East Coast President

Amanda Gutterman — 2016-2017 Communications Chair

Keeth Smart — 2016-2017 University Liaison Chair

Michael Kraslow — 2016-2017 Student Liaison Chair