In 1993, she graduated from the Faculty of Computer Engineering and Management of Kharkiv National University of Radioelectronics.

From November 2010 to December 2012, Kupreychyk was a Deputy of the Sumy Regional Council representing the "Front of Change" party, No.

She was the director of "Niva-Agrotech" LLC, a company engaged in the cultivation of grain and technical crops.

[1] She was Chairman of the Subcommittee on Criminal Procedure Legislation of the Verkhovna Rada Committee on the Rule of Law and Justice, member of the Counting Commission[2] On 11 March 2015, Kupreychyk was appointed the deputy head of the Sumy Regional State Administration.

[3][4] Since 4 December 2020, she is a member of the Sumy City Council from the "Strength and Honor" party.