Simona Baumrtová was born and raised in Chomutov, where she was coached by her father Tomáš Baumrt.

At 2010 European Short Course Championships in Eindhoven, Baumrtová won a bronze medal in 50-metre backstroke.

[3] A year later in Szczecin, she won again a bronze medal in the same event[3] clocking 26.94, a national record.

In both events, she set new national records in heats — 59.99 and 2:10.03 — advanced to semi-finals but did not manage to reach the finals and finished 10th and 14th respectively.

In August 2018, she married physiotherapist Kryštof Kuba and changed her surname to Kubová.