[1][4] Originally a Manurewa Marlins junior in New Zealand, Kenny was signed to play for Melbourne Storm SG Ball team.

Bromwich has also made appearances for the Easts Tigers and Sunshine Coast Falcons in the Queensland Cup.

He played in every single game for the Melbourne Storm this year, as well as the loss in the 2016 NRL Grand Final against the Cronulla-Sutherland Sharks.

[citation needed] He was also part of the Melbourne Storm team that played in the 2018 World Club Challenge and 2018 NRL Grand Final loss against the Sydney Roosters.

[7] Bromwich played a total of 21 games for Melbourne in the 2021 NRL season as the club won 19 matches in a row and claimed the Minor Premiership.

[10] In round 1 of the 2023 NRL season, Bromwich made his club debut for the Dolphins in their inaugural game in the national competition, defeating the Sydney Roosters 28-18 at Suncorp Stadium.

[11] In round 7, South Sydney defeated the Dolphins 36-14 at Suncorp Stadium, and Bromwich was sin-binned in the 61st-minute and cited for a Grade 2 Dangerous Contact offence.