The child of ethnic German parents, Johanna came to Germany from Hungary and began her sporting career at the training center in Ulm, where she was discovered by former world champion Alexandra Timoshenko, she then moved to TSG Söflingen to train with Tatjana Postrigan, who came out the same school as Anna Bessonova who became Johanna's idol.

[7] She became a senior in 2006, winning the national championships with ball, ribbon and rope as well as in the All-Around, she also was the bronze medalist with clubs.

[8] In June of the same year she took part in the World Cup in Irkutsk, taking 13th place in the All-Around, 8th with rope and ribbon and 6th with clubs.

[13] In 2008 she was the national runner up, behind Raskina, in the All-Around and with clubs and ribbon, winning gold with rope.

[18][19] At the World Championships in Mie, Johanna was 13th with Maike Deuschle, Camilla Pfeffer, Sara Radman and Karolina Raskina in the group All-Around and 13th with 3 ribbons + 2 ropes, 14th with 5 hoops.