There was no real hiring process with Bruce.
Barnes & Penfold had contacted 10 potential managers about the job, all of whom had rejected the opportunity to work under Ashley's controls. They then did what they understood how to do the best - nothing. Luckily for them, for the 2nd manager hunt in a row, a manager contacted them about the vacancy.
We got very lucky the first time around when Rafa offered his services. Not so lucky the second time when the guy asking for the job was Bruce. No one sought him out for the job, he was simply the only one who was interested in working under Ashley.
He's basically Chief Wiggum.