James joined the Warriors from GHA in 2006 and played 126 times before retiring recently. He will take up the position of Specialist Skills Coach at Braidholm.
GHA's new Head Coach will be Euan Clark who will combine the post with his current role as GHA Academy Manager.
Clark, 31, who played most of his rugby at Stewart's Melville FP, previously worked under former Wallaby Mark Gerrard at Warringah Rugby Club in Sydney as well as at leading Australian rugby school Knox Grammar where he worked under ex-Scotland coach Matt Williams.
Peter Jericevich has taken up a new role as Head of Performance, the former Scotland Sevens international and current Scotland Women's Assistant Coach will focus on strength & conditioning and individual player development.
Ben Addison, another former Scotland Sevens international, will take charge of the backs whilst ex-Scotland age-grade cap and GHA stalwart Donald Malcolm will take charge of the forwards once again.