[3] From 2000 to 2004, Losse-Müller was an Assistant Vice President at Deutsche Bank in London.

[3] In 2010, Losse-Müller went back to work at the World Bank as a Senior Financial Sector Expert.

[3] Before joining the Social Democratic Party of Germany in 2020, Losse-Müller was a member of Alliance 90/The Greens.

[1] Between 2017 and 2021 Losse-Müller worked at EY Parthenon, a Consulting firm based in Hamburg.

[2] On 6 December 2023, Losse-Müller announced his resignation as Leader of the Social Democratic Party in the Landtag of Schleswig-Holstein.