Participation in 2013 European Youth Olympic Winter Festival in Romanian Râșno brought Sebastian Bradatsch gold medal in Mixed-Team and silver in Team competition.

In the end of 2013 he participated as a part of German national team (in Qualification) in jumping during new year season with no access to world championships.

At Junior World Championships 2014 in Val di Fiemme he passed a bit to get a medal and was ranked as fourth.

At same championship he reached 5th place in Team competition with Paul Winter, Michael Herrmann und Dominik Mayländer.

Four Hills Tournament 2014/15 was featured by Sebastian Bradatsch as a part of German team in Oberstdorf and Garmisch-Partenkirchen.