Jack is a strong central defender, who has been involved with the Cardiff City Academy since U14. He progressed through the Cardiff City FC Advanced Development Centre in Newport.

The Newport-born defender has represented Wales at international youth level.

Jack has made 13 PDL2 appearances during the 2018/19 season for Cardiff City's U23 side, scoring twice, as of January 10th, 2019. On January 11th, he agreed a loan deal with Welsh Premier League side The New Saints for the remainder of the 2018/19 season.