Jack told Newcastle’s website: “This is an exciting opportunity to help the club build on the outstanding progress and successes it has achieved on and off the pitch in recent seasons.”
Newcastle say he will “help to develop a consistent sporting philosophy across the club” and support “communication, collaboration and the implementation of best practice across men’s, women’s and academy football”, all aimed at “enabling talent depth and retention”.
Jack, a full-back with Clyde, Hartlepool United, Falkirk, St Mirren, Hamilton Academical and Dunfermline Athletic, first went into management with Alloa Athletic in 2015.
His last such role ended in August 2022, when he was sacked as Dundee United head coach after only seven games in charge.
Meanwhile, former Manchester United and Scotland midfielder Darren Fletcher has been appointed as the lead coach for the Premier League club’s under-18s side.
Academy graduate Fletcher made more than 300 appearances for United and the 41-year-old has worked in various roles since returning to the club in 2021.
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