Manager Jamie Day has left Welling United to take over at their Kent rivals Ebbsfleet United.
He replaces former Charlton defender Steve Brown, who was recently sacked.
Day, 35, has been in charge of Conference club Welling for five-and-a-half years, but Ebbsfleet's greater resources meant he opted to drop down a division.
He told BBC Radio Kent: "Welling is a fantastic club but has limited funds. It's an opportunity I can't turn down."
Day also believes that moving on will help him achieve his ambition of managing in the Football League.
"They want to be a league club and I want to be a league manager," he said.
"Welling gave me an opportunity at 29 and I'm sad to leave, but I feel it's the right time to move on.
"I've had a fantastic time at Welling but there's an opportunity at Ebbsfleet to take the club higher and there's the backing to do that.
"The first job is to get out of Conference South. Hopefully we can do that and then move on from there.
"I'm dropping down a league but I feel this club [Ebbsfleet] has got everything put in place and the plans are exciting."