Lisek's international debut was at the 2013 European Indoor Championships where he did not go through the qualifying round. Also at the 2013 European U23 Championships, he did not manage to reach the final. His big breakthrough came in 2014, when he jumped 5.77 metres in the indoor season. However, despite regularly jumping over 5.75 metres, he did not make the team for the 2014 IAAF World Indoor Championships, which took place in Poland, after no marking at the national championships. He had more success in the outdoor season, jumping 5.82 metres and finishing sixth at the 2014 European Championships. 2015 proved to be even more successful for the Polish vaulter with a new national indoor record of 5.90 metres and the bronze at the 2015 European Indoor Championships, his first international medal.