In 1928, Baumeister competed in the 400 m and 4 × 100 m events at the 1928 Summer Olympics. She was eliminated at 3rd place in the first heat of the 400 m freestyle. The Dutch team of Eva Smits, Maria Vierdag, Marie Braun and Baumeister came in a close third, but were disqualified because Baumeister had jumped to early in the water at her changeover. Baumeister made amends in 1931 when she and her team won gold in the 4 × 100 m relay at the 1931 European championships, beating the closest competitors by six seconds.