vulikić was a member of the serbian u-18 national basketball team that won the gold medal at the 2017 fiba europe under-18 championship. over seven tournament games, he averaged 6.0 points, 3.0 rebounds and 4.9 assists per game. also, he was a member of the serbian u-16 national basketball team that participated at the 2015 fiba europe under-16 championship. vulikić was a member of the serbian under-20 team that finished 15th at the 2019 fiba u20 european championship in tel aviv, israel. over seven tournament games, he averaged 6.9 points, 2.0 rebounds, and 2.1 assists per game.