At the 2011 World Championships she failed to qualify for the final, finishing at the 24th place in the qualifications.

Jelača made breakthrough in her senior career in qualifications of the 2013 World Championship when she threw national record 62.68 meters.

[2] She won her first senior medal, silver at the 2014 European Championship with a huge personal best which is also national record 64.21 meters.

[3] Her coaches are Goran Pavlović, Aleksandar Spajić and Dragiša Đorđić.

In March 2015, Tatjana Jelača and her fiancé Bojan Mirković were married; their son Nikola was born in September 2015 in Frankfurt, Germany.