On 25 October 2017, Bruus signed his first professional contract with Brøndby IF, a two-and-a-half-year deal which tied him to the club until the summer of 2019. He was included in the first team squad from 1 January 2018.[3] He made his Brøndby debut at the age of 18 when he was brought on for the final ten minutes in the 2–2 home draw against AGF on 10 December 2017.[4]
Loan to Roskilde
Bruus signed a new three-year contract on 31 August 2018 with Brøndby before joining Danish second tier club FC Roskilde on loan until the end of the 2018–19 season.[5][6] He scored four goals in 24 appearances during his spell,[7] including a brace against Nykøbing FC in a 5–0 away win.[8]
Return to Brøndby
Bruus returned to Brøndby after his loan, but failed to make any appearances during the fall of the 2019–20 season under new manager Niels Frederiksen.[9] In January 2020, he appeared as a right wing-back in friendlies against BK Avarta and Hvidovre IF indicating a new, more defensive role for him in Brøndby after having mostly played as a striker before.[10] He continued in this role in friendlies against Lyngby and Hvidovre,[11] and was called up for the first team in their first match, after the COVID-19 pandemic had suspended the competition, on 2 June 2020 for the match against SønderjyskE.[12] Bruus came on as a substitute for an injured Kevin Mensah with 20 minutes remaining.[13][14]
On 19 July, Bruus signed a new contract to keep him at the club until 2023,[15] after having established himself as a starter at the right wing-back position in head coach Frederiksen's 3–5–2 formation.[10][16] A few months later, on 24 October 2020, Bruus scored his first goal for Brøndby in a 3–2 home loss to Midtjylland.[17][18]
Bruus joined Ligue 1 club Troyes on 18 July 2022, signing a five-year contract.[20][21] He made his competitive debut for the club on 7 August, starting at right-back and providing an assist in a 3–2 away loss to Montpellier.[22] In the following league match against Toulouse, he fell out with a knee injury, sidelining him for the following weeks.[23]
On 2 September 2024 the Danish Superliga side AaB confirmed that Bruus joined the club on a loan deal until the end of the 2024-25 season.[24]
^Erlitz, Peter (2 February 2018). "Fodbold og uddannelse i superligaklasse". sn.dk (in Danish). Sjællandske Nyheder. Retrieved 20 September 2020. Det er tilfældet for 18-årige Casper Hauervig fra Ishøj, samt for Andreas Bruus fra Greve og Christian Enemark fra Køge, der begge netop er fyldt 19 år. »Det er jo noget, man skal igennem. Det kan nogle gange være tungt, men det skal jo gøres,« lyder det fra de tre unge Brøndby-spillere om skole og lektier. Casper, Andreas og Christian går på Albertslund Gymnasium, hvor man har oprettet en særlig Team Danmark-linje på HF.
^"FC Midtjylland vinder på sent comeback mod Brøndby". TV 2 (in Danish). 24 October 2020. Retrieved 25 October 2020. Brøndby-dominansen udnyttede hjemmeholdets back Andreas Bruus til at bringe sit hold foran efter et kvarters spil, da han blev spillet fri i feltets højre side.