Vladimir Morozov
On August 2–9, Pakhomov appeared in his first seniors at the 2015 World Championships in Kazan, competing with Russian Team in 4 × 100 m mixed medley (with Yulia Efimova, Vladimir Morozov, and Anastasia Fesikova) where they finished 5th and in men's 4 × 100 m medley (with Kirill Prigoda, Evgeny Rylov, and Vladimir Morozov) also finishing 5th in the finals.