He won national titles with former partners Elizaveta Usmantseva and Natalja Zabijako.

Zabijako injured her back as a result of a fall at the NRW Trophy in December 2011, preventing them from competing at the 2012 European Championships.

[1] On 15 February 2012, it was reported that Zabijako and Kulbach had parted ways and he had returned to Ukraine.

[1] In 2012, Kulbach teamed up with Elizaveta Usmantseva to compete for Ukraine but their partnership was short-lived.

[2] Kulbach died on 23 May 2023 by fire accident in an apartment on Ivan Gundulića Street in Sisak, Croatia.