At the 2011 World Junior Curling Championships he led teammates Marek Cernovsky, Samuel Mokris and Karel Klima to a 9th-place finish (2-8 record).

At the 2012 World Junior Curling Championships, he led Cernovsky, Jan Zelingr and Mokris to an 8th-place finish (2-7 record).

There, he led his team of Jiri Candra, Tomáš Paul and David Jirounek to a bronze medal.

Klíma skipped the Czech Republic again at the 2013 Winter Universiade, but his team had less success, finishing 7th with a 3-6 record.

[2] Also during his junior career, Klíma played in the 2012 World Mixed Doubles Curling Championship.