The Magpies are now on the hunt for his replacement, and the likes of ex-Roma boss Paulo Fonseca, former Borussia Dortmund manager Lucien Favre, and English duo Frank Lampard and Eddie Howe are all thought to be leading candidates for the job.
Speaking after his departure from St James' Park, Bruce gave a brutally honest assessment on the struggles he faced at the club, and said: “I really have to thank all the people who have worked alongside me, because I can be demanding and I can be hard work - especially when I was younger.
“When we get beat, I get very low, but when you are managing in the Premier League with Birmingham, Wigan, Hull, Sunderland you do get better at dealing with it. You have to.
“By the time I got to Newcastle, I thought I could handle everything thrown at me but it has been very, very tough.
He continued: “To never really be wanted, to feel that people wanted me to fail, to read people constantly saying I would fail, that I was useless, a fat waste of space, a stupid, tactically inept cabbage head or whatever. And it was from day one.
“When we were doing OK results wise, it was ‘yeah but the style of football is rubbish’ or I was just ‘lucky.’ It was ridiculous and persistent, even when the results were good.
Take a look at all the latest news from the Premier League, as the reaction to last weekend's exhilarating action continues:
1. Toffees ready £10m raid
Everton are thought to be ready to reignite their interest in Rangers right-back Nathan Patterson, after having a £5m offer turned down for the player next summer. They've been tipped to return with a bid in the region of £10m. (Daily Record) Photo: Ian MacNicol
2. Brighton join scrap for Fulgini
Brighton are among three Premier League sides who have joined the likes Lyon and Marseille in the race to sign Angers midfielder Angelo Fulgini. The ex-France U21 international scored seven league goals and made four assists last season. (Football Insider) Photo: FRANCK FIFE
3. Foxes eye Brazilian midfielder
Leicester City are said to be keeping tabs on Porto midfielder Otavio, and are believed to have scouted him during his side's game against 1-0 win over AC Milan last night. His release clause will drop to €40m next summer. (Sport Witness) Photo: MIGUEL RIOPA
4. Spurs join West Ham in race for lethal striker
Spurs are the latest side to be linked with a move for Genk's £20m-rated striker Paul Onuachu. The towering centre-forward, who has 15 caps for Nigeria, has also attracted the attention of West Ham and Atletico Madrid. (Daily Mail) Photo: JOHAN EYCKENS