Billie
Constantin Rueff is a Senior Product Designer at Billie since October 2019. Prior to this role, Constantin worked as a Product Designer at Selbständig from April 2017 to October 2019. Constantin also has experience as a UI-Designer at CELLULAR GmbH from September 2015 to March 2017. Constantin Rueff received their education at HTK Hamburg from 2013 to 2017.