Gryshchenko studied at the Kosiv College of Applied and Decorative Art named after V. Kasian and graduated from the National Academy of Fine Arts and Architecture (department of graphic art) in 2010, where he continued his study as a doctoral student.
He is a graphic artist, illustrator, author of video works and works in the public space, a follower of the book graphics' classical school, which he is constantly rethinks working on his own artist's books.
Since 2008, he is the author and the participant of personal and collective projects, national and international triennials of book graphics and posters. He took part in the Genofond scholarship program for young artists, implemented by Ya Gallery Art Center in 2010 and 2011. The artist presented five personal projects – Two (2012), NArodU and Route (2010), Florescence (2014) and Florescence.Greenhouse conditions (2015) in cooperation with Ya Gallery Art Center. He also joined a number of collective projects curatored by Pavlo Gudimov, including Paper Wars under ArtVilnius'11 and Neofolk project – visual art program within GOGOLFEST 2012. In the recent project Memoria (with Emmanuelle Castellan and Kirill Ukolov, as a part of МEMORANDUM program) Oleg Gryshchenko presented Grain Memory exposition, which «appeals to the works with cultural memory – lost, restored, just received».
All-Ukrainian festival ofcalligraphyand font"Ruthenium", Kyiv Art & Since festival,Patras, Greece All-UkrainianTriennialof graphics, Kyiv Ukraine. Gogol.World,Poltava InternationalTriennialof EnvironmentPoster"Unit 4", Kharkiv Exhibition ofthe 100th anniversaryof M. Pryjmachenko, Kyiv All-Ukrainian StudentBiennialof illustrations, Khmelnytskyi
2008 Group exhibitionof graphics"Nudes", Kyiv All-UkrainianDrawing Biennale n. a. G. Yakutovych, Kyiv Internationalexhibition of bookplateand smallgraphics"Treasures ofTripoli culture", Kyiv Exhibition of illustration, National Academy of Fine Arts and Architecture, Kyiv Re-Book,exhibition of author'sbooks, UK