Alexei Kostyuk was born in Leningrad. In 2012 he graduated from the Rimsky-Korsakov St Petersburg State Conservatory (class of Elena Oparina).
Alexei Kostyuk’s opera debut took place in 2009 on the main stage of the Rimsky-Korsakov St Petersburg State Conservatory Theater of Opera and Ballet, where he performed the part of Triquet (Eugene Onegin, P. Tchaikovsky). On the same stage, year later Alexei Kostyuk debuted as Lensky in Alexei Stepanyuk production.
In the 2012/13 season Alexei Kostyuk was a soloist of the St Petersburg Chamber Opera and the Mariinsky Academy of Young Opera Singers (class of Alexei Steblianko).
He became a soloist of Primorsky Opera and Ballet Theatre in 2013. Since 2016 Alexei Kostyuk has been a member of the Opera Company of the Primorsky Stage of the Mariinsky Theatre.
In May 2019, he participated in the tour performances of the Tsar's Bride opera by Nikolai Rimsky-Korsakov directed by Vyacheslav Starodubtsev in the Zaryadye concert hall (Moscow) and in the Mariinsky-2 (St Petersburg).
Repertoire at the Primorsky Stage of the Mariinsky Theatre:
Alfredo Germont (La traviata, G. Verdi);
Tamino (The Magic Flute, W.-A. Mozart);
Duke of Mantua (Rigoletto, G. Verdi);
Canio (Pagliacci, R. Leoncavallo);
Lensky, Triquet (Eugene Onegin, P. Tchaikovsky);
Andrei (Mazepa, P. Tchaikovsky, concert performance);
Tsarevich Guidon, Old man (The Tale of Tsar Saltan, N. Rimsky-Korsakov);
Vakula (Christmas Eve, N. Rimsky-Korsakov);
Anatole Kuragin (War and Peace, S. Prokofiev);
Truffaldino (The Love for Three Oranges, S. Prokofiev);
Heinrich von Eisenstein (Die Fledermaus, J. Strauss II);
Malcolm (Macbeth, G. Verdi);
Ivan Lykov, Bomely (The Tsar’s Bride, N. Rimsky-Korsakov);
Remendado (Carmen, G. Bizet);
Emperor Altoum (Turandot, G. Puccini);
Spoletta (Tosca, G. Puccini);
Messenger (Aida, G. Verdi);
Chekalinsky (The Queen of Spades, P. Tchaikovsky).
Repertoire also includes:
Sir Edgar Ravenswood (Lucia di Lammermoor, G. Donizetti), Vaudémont (Iolanta, P. Tchaikovsky), A Heated Gambler (The Gambler, S. Prokofiev), Count Almaviva (Il barbiere di Siviglia, G. Rossini), Yurodivy (Boris Godunov, M. Musorgsky), Mozart (Mozart and Salieri, N. Rimsky-Korsakov), Young Gypsy (Aleko, S. Rachmaninoff), Alfred (Die Fledermaus, J. Strauss II), Beppe (Pagliacci, R. Leoncavallo), Maintop (Billy Budd, B. Britten), Father Mikhailo, Head Doctor (The Story of a Real Man, S. Prokofiev), Iskra (Mazepa, P. Tchaikovsky), Wounded, Traitor, Guest, Writer (Doctor Zhivago, A. Lubchenko), Policeman (The Nose, D. Shostakovich), 1st knight (Parsifal, R. Wagner), Klevest (Khovanshchina, M. Musorgsky), Physician (The Fiery Angel, S. Prokofiev, concert performance).
Concert's repertoire includes tenors roles St Cecilia Mass, C. Gounod.