The 24-year-old signs for The Heed after being looked at by a number of National League clubs following the end of his contract with Stenhousemuir, who were relegated to the Scottish League Two at the end of last season.
A 6`2” centre-back, he spent the past two seasons in the Scottish First Division with Cowdenbeath and Stenhousemuir respectively and joins the Tynesiders just after the sale of James Bolton to Sky Bet League One side Shrewsbury Town.
A graduate of Birmingham City`s youth system, Kerr didn`t make a senior appearance for the Blues before he returned north of the border to join Motherwell, where he had previously spent the early part of his youth career.
There he went on to make sixty-six appearances between 2012 and 2015 as he helped them to back-to-back runners-up finishes in the Scottish Premiership before taking part in the relegation play-off in his third and final season for the Well.