Chief administrative officer Patrick Robins is leaving Princeton for a similar job in Saanich.
He will be the Vancouver Island city's new CAO.
"I enjoyed my six years with Princeton and it has been a pleasure serving the community," Robins said.
Princeton is now in search of a new chief administrative officer, said Acting Mayor Jason Earle.
"We'll miss him. Saanich is a bigger community and this is a good opportunity for him," he said.
Town council will have to take on more work until a replacement is found, he added.