He also played in both legs of 2009 Croatian Cup finals which Dinamo won third time consecutively, defeating Hajduk Split 4–3 after penalty shootout.

He also made his debut in the European competitions on 21 July 2009 in a 2009–10 UEFA Champions League match against Pyunik Yerevan which Dinamo Zagreb won 3–0.

[7] On 31 August 2015, Tomečak signed a two-year contract with Ukrainian club Dnipro Dnipropetrovsk, for a fee of €1 million.

[11] In January 2018, Tomečak moved to Mechelen's league rivals Club Brugge KV signing a 3+1⁄2-year contract.

The transfer fee was reported as €1 to 1.5 million[12] On 5 February 2019 Tomečak signed for HNK Rijeka as a free agent.

[14] He made his senior debut on 12 November 2014 in a friendly match against Argentina in London, coming as a 71st-minute substitute for Hrvoje Milić.