Warriors assistant coach and ex-head coach Andrew McFadden will bring his six-year stay in Auckland to a close at the end of 2018.
McFadden, a Canberra Raiders stalwart in his playing days, joined the Warriors as an assistant in 2013 and became head coach in the 2014 season.
He served in that role through 2015 and 2016, failing to guide the side to the NRL finals, before being demoted to assistant under Stephen Kearney.
He intends to move back to Canberra with his family.
McFadden said his sole focus was now on the season ahead.
"It was important to give Cameron (George), Stephen and the club plenty of notice about our plans to go home," the 40-year-old McFadden said.
"All that matters now is what's ahead of us."
George, the Warriors' chief executive, thanked McFadden for his service and said the club fully supported his decision to return home to Canberra.
It's unclear if he'll take up a 2019 role with the Raiders.