Lives and works in St. Petersburg and Paris.
Graduated with honors from the textile art department of the St. Petersbrg Stieglitz State Academy of Art and Design.
She had over 250 exhibitions in her hometown of Saint Petersburg and Europe, including Paris, France, Fontenay-sous-Bois, France, and Art-Fair in Battersea (London). Her solo exhibitions occurred in London, Paris, Meung-sur-Loire, Orleans, Reims, Zurich, Moscow, and Saint Petersburg galleries.
Her works are included in the collections of the museum, the Russian Museum, and other museums, as well as private collections in Russia, France, Belgium, Germany, Netherlands, Czech, and the USA.
Ekaterina Posetselskaya is a member of the (since 2011), the (since 1991), the , , and the (France).
1992 became prominent in France after presenting painted easter eggs at the international Salon
1999 first solo exhibition in the trade mission of Russia in France.
2003 received the gold award at an international salon in Saint-Raphaël, Vladimir Vetrogonski award of the International Triennale of Graphic Art in Saint Petersburg.
2012 was invited as an honorable guest
2013, she participated in Paris, where her drawing of her hometown of Saint Petersburg was awarded
2023 her book illustrations won her an award.