Nikolai Bartossik has been a member of the National Union of Artists of Ukraine since 1993, and a member of the United Scenic Artists of America since 1998
He worked at the Kyiv Monumental and Decorative Art Association from 1976–1995, where he worked in collaboration with artist Ernest Kotkov, creating three-dimensional compositions, including:
• "Awakening" and "Let The Sun Always Shine" – sculptures made of iron and concrete covered with mosaics (1981, Kuznetsovsk, Rivne region, Ukraine) Project architect – F. Y. Khudyakov
• "Meteorite" – sculpture up to 15 m of iron and concrete covered with a mosaic of glazes, marble and specially made "module" of stainless steel (1983, Dnepropetrovsk, Ukraine), architects of the project: Yuriy Khudyakov, Victor Sudorgin
• "Lybidska" Metro Station – composition of light line with brass elements extending the full length of the station and ends with the central panel in the end station made of brass, marble, brass stars and lights. Also, lighting design by official platform and the door track on the wall made of brass. The station was opened on December 30, 1984, Kyiv, Ukraine. Architects: Valentyn Ezhov, Anatoliy Krushynkyi, Tamara Tselikovska with Oleksiy Panchenko, artists Ernest Kotkov, Nikolai Bartossik
• "By The Sources" – sculpture mede of copper and concrete (1986, Kyiv, block – Vyhurivschyna–Troyeshchyna, Ukraine) architects of the project: Mykola Kyslyi, Grygoriy Gurenkov

In 1970 graduated M. Boychuk Kyiv State Institute of Decorative Arts and Design | Kyiv Art-Industrial College
Teachers:Nadia Tanysheva, Paladiy Dudchak, Piter Polyansky, Vasyl Panchenko, Volodymyr Shlyahovoy

In 1975 he graduated from the Kharkiv State Academy of Design and Art | Kharkov Art and Industrial Institute
Teachers: Dmytro Sova, Lyubov Zhukovskaya, Yuriy Dyachenko, Sergiy Besedin