In 2015, Buckwitz and Cathleen Martini won the two-woman Bobsleigh World Cup event in Königssee. In 2016, Buckwitz and Stephanie Schneider won a bronze medal in the two-woman at the Bobsleigh European Championship, and came fourth in the two-woman event at the IBSF World Championships in Igls, Austria. In 2017, Buckwitz, Christopher Grotheer, Stephanie Schneider, Tina Hermann, Nico Walther and Philipp Wobeto won the silver medal in the mixed team event at the IBSF World Championships in Königssee. They finished behind another German team.