A former
discus and
hammer thrower of Berlin, Jamanka became a bobsledder in 2013. She entered the
Bobsleigh World Cup during the 2015–16 season. In January 2017, she won the
European Championship in
Winterberg with brakewoman
Annika Drazek. Later the same year, she was part of the gold-winning German team in the mixed team event at the
IBSF World Championships in
Königssee. Before the
2018 Winter Olympics in
Pyeongchang, Germany's head coach
René Spies changed the brakewomen of the country's two leading two-women bobsleighs: Drazek was assigned to pilot
Stephanie Schneider, while Jamanka had to work with Schneider's former brakewoman
Lisa Buckwitz, with Schneider and Drazek being the most aspiring German team for the Pyeongchang Games. However, Jamanka and Buckwitz won the event, winning Germany's first two-woman bobsleigh medal since 2006, while Schneider and Drazek, who both became injured during the Games, finished fourth. In January 2024, she started as a sports presenter on German national TV. ==Personal==