Julian Teicke was born in Berlin on 10 October 1986 and studied at the University of St. Gallen. In 2009 he helped start the UK branch of Chocri, then headed European sales at Groupon.
In 2010 he joined DeinDeal in Switzerland and became COO. He won the Swiss e-Commerce award in 2013 and 2014, and Ringier bought DeinDeal in 2015.
That year he founded FinanceFox with Dario Fazlic and Fabian Wesemann. It renamed itself wefox in 2017 and launched its own insurer under the One brand in 2018. In June 2021 it raised $650 million at a $3 billion valuation, and a $400 million round in 2022 valued it at $4.5 billion.
Wefox lost €141 million in 2023. Teicke stepped down as CEO in March 2024, and a 2024 round valued the group at about €500 million. In July 2025 it raised €151 million after restructuring.