Our Team 

Tania A. Coke, CEO

Prior to founding Tellus, she worked at Google and Capital IQ in product and strategy roles. Tania has also held research positions at Harvard Medical School and MIT's McGovern Institute for Brain Research. She graduated from Stanford with her masters in Engineering where she was a DFJ Entrepreneurial Fellow. She is a Boston native who loves New York and is currently working on her daruma doll collection.

Kevin Hsu, CTO

Prior to founding Tellus, Kevin worked at the Stanford Integrated Biomedical Systems Lab where he made circuit boards for pacemakers, neurostimulators, and other sensing devices. He has also designed medical device prototypes and products for large companies like St. Jude Medical and startups. His early work experience includes hardware engineering roles at Texas Instruments and Apple. He graduated with a bachelor's and master's in Electrical Engineering from Stanford. He is a fan of the manga artist One.



Phil Libin, All Turtles

All Turtles is an AI Studio which supports companies with their expertise in bringing high quality products to market. All Turtles has offices in San Francisco, Tokyo and Paris.

Phil Libin is the Founder and CEO of All Turtles. Phil served as CEO of the Silicon Valley based software company Evernote from 2007 to 2015. In September 2015, Libin joined General Catalyst Partners as its fourth general partner in Silicon Valley and in 2017 he founded All Turtles.

Ken smith

Director, Stanford Center on Longevity

Ken brings over 20 years of management and engineering experience to his role directing the Mobility Division at the Stanford Center on Longevity, where he created the Stanford Center on Longevity Design Challenge, a worldwide university competition that has drawn over 250 aging-related design entries from 28 countries. Ken holds a B.S.M.E from the University of Illinois with an M.S. from the University of Washington.

Amy Yotopolous

Director, Stanford Center on Longevity

Amy Yotopoulos serves as the Director of the Mind Division at the Stanford Center on Longevity.  She has over a decade of experience in researching the aging mind and body, developing innovative new businesses focused on the senior market, and in leading direct service organizations and providing hands-on caregiving to mature elders. In addition to her previous roles at Stanford, AgeWave and as the Director of the Avenidas Senior Day Health Center in Palo Alto, she has served on the Advisory Council for the Silicon Valley Council on Aging in Santa Clara County. Amy holds a BA in Psychology from Stanford University, and received both a MS in Gerontology and a Masters in Health Administration from the University of Southern California.