Yaroshchuk ran a personal best of 54.77 seconds to win the hurdles gold at the 2011 European Athletics U23 Championships ahead of compatriot Hanna Titimets and the two later combined their efforts to claim the silver in the relay behind Russia. She won her second 400 m hurdles gold of season at the 2011 Summer Universiade. She came in fourth in the 400m hurdles at the 2012 Summer Olympics.