Ukrainian TOP-lawyer and Ukrainian Senior Government official.

Nov 2021 - Sept 2023 — the 17th Minister of Defence of Ukraine.

Mar 2020 - Nov 2021 — Deputy Prime Minister, Minister for Reintegration of the Temporarily Occupied Territories of Ukraine.

2014-2018 — Deputy Mayor of Kyiv.

2015-2016 — Head of the Ukrainian delegation at the Congress of local and regional authorities of the Council of Europe.

2004 — One of the lawyers of the candidate for the President of Ukraine Viktor Yushchenko, who were able to prove in Supreme Court the fact of falsification of the election results by another candidate - Viktor Yanukovych. As a result, a re-voting took place and Yushchenko became the President of Ukraine.

Reznikov is a well-known & one of the best Ukrainian negotiators. He was the Deputy Head of the Ukrainian delegation at the "Minsk negotiations" regarding the peaceful settlement.

As a lawyer, he practiced alternative dispute resolution. Due to the fact that he managed to bring most of the conflict cases to a peaceful settlement, he received the nickname "Peacemaker".

He also has extensive teaching experience: he taught at a number of National Universities of Ukraine.

In the summer of 2024, joined the GLOBSEC team as a Distinguished Fellow.

Joined the Planet Labs team as a member of European Advisory Board

Recently, he delivered lectures at prominent institutions, including American University (Washington DC), Berkeley University, Stanford University (California), Harvard Kennedy School’s Belfer Center, Ukrainian Research Institute (Harvard University), MIT Center for International Studies, as well as in University of Copenhagen (Denmark),Istanbul University ( Turkey ) universities in Tokyo, Security Conferences in Munich, Vilnius, Prague and Tel Aviv.

a speaker at The Future of Ukraine Conference at the Stimson Center (Washington DC); at the Wilson Center (Washington DC). Together with American filmmaker Norma Percy Oleksii Reznikov was a speaker at the Hey Festival Anytime (United Kingdom).

Awards:

The Order of the Cross of Vytis for special determination, sacrifice and leadership in the defense of Western democratic values and the fight for a safe Europe. Awarded by the President (Lithuania);

"Silver Cross of Merit". Awarded by the President (Poland);

Award "Medal of Merit". Awarded by the Defense Minister (Lithuania);

The Medal "For outstanding leadership during the war". Awarded by the Defense Minister (Denmark);

Honored Lawyer of Ukraine (Ukraine).