Rainer is an entrepreneur turned investor with 20 years of experience in building technology businesses and products across diverse cultures in the U.S., Europe, and Japan. He was the founder & CEO of Planet OS (acquired by Intertrust), and after 8 years in Silicon Valley, he moved to Estonia in 2019 to build NordicNinja and help mission-driven Nordic & Baltic founders scale their businesses globally.

From founding startups to being acquired by a Silicon Valley corporation; from running a family company to a leading role at ABB; from a university robotics engineer to a board member at a worldwide NGO – he’s managed change in organizations big and small.

Over the years, Rainer has been involved in some notable initiatives: serving as a Board Director for the World Ocean Council and a member of the White House Open Data Roundtable during the Obama administration; at ABB, he was in charge of designing the world’s first nationwide fast-charging network for electric vehicles; served as Millennium Leadership Fellow at the Atlantic Council; and in 2019, he co-founded Kood – a free programming school for adults in Estonia.