Kay's formal background is electrical engineering and automation. After starting his career in London in 2002, he has worked internationally in the home appliances, aviation and renewable energy industry.
(e.g. Siemens, Airbus, Tennet)

As an entrepreneur and activist he has been developing systems and services that dramatically transform the economy and stop climate change since 2013. (e.g. EnergieNetz Hamburg, Extinction Rebellion, Sustainably-Growing.com)