[1] Yermak is also a member of the Headquarters of the Supreme Commander-in-Chief, the highest command and control body for the Armed Forces of Ukraine.

[citation needed] In the 2010 Ukrainian presidential election, he was a proxy of candidate Arseniy Yatsenyuk in Kyiv's 216th constituency.

[9] He founded the Garnet International Media Group in 2012[10] and is the producer of such films as Rule of Battle [Wikidata] and The Line.

[6] On 21 May 2019, newly elected President Zelenskyy appointed Yermak as Presidential Aide for Foreign Policy Issues.

[12] He was the point of contact for Kurt Volker and Rudy Giuliani on behalf of Zelenskyy during the buildup of the Trump–Ukraine scandal.

[13] Yermak promised that, in response to their request, Zelensky would publicly pledge to investigate Burisma, a company that employed Hunter Biden.

[citation needed] Yermak was appointed chairman of the Coordination Headquarters for Humanitarian and Social Affairs on 2 March 2022.