Former Bath coach Brad Davis will join Wasps as defence coach from next season.
Davis, whose playing career was spent in rugby league, joined Bath in 2006.
Backs coach Shane Howarth is leaving the club for Worcester so, in a new-look structure for next season, Stephen Jones will be attack coach with Davis concentrating on defence.
Wasps coach Dai Young said: "We are sorry to lose Shane who has done a good job for us this season and we've reluctantly released him from his contract after his requests, due to his family wanting to move out of London.
"Stephen has already had a big influence in our attack this season and I am very confident in his ability to step up and carry on where Shane has left off.
"Brad Davis will also be a very good addition for us. He's an excellent coach and is highly rated by the players who have worked with him and I think he brings a nice balance to the coaching team giving us a much stronger focus on our defence."
Davis said: "I'm excited to have the opportunity to join Wasps and to work with Dai and the team in helping them to achieve their goals.
"It is a squad full of huge potential and they have played some great attacking rugby this season so I'm really looking forward to working with the players to strengthen their defence so that we can compete and win games consistently at the highest level."