Hearts U18s head coach John Rankin has left the Jambos to take up Hamilton Accies' assistant manager post.
New Douglas Park head coach Stuart Taylor has been on the lookout for a new number two following Guillaume Beuzelin's departure last month.
Rankin, 38, has been working as boss of Hearts' youth side but leaves the Tynecastle club to take up a senior role with Accies.
Former Scotland international Steven Naismith has taken on Rankin's role at Hearts until the end of the season.
A former midfielder, Rankin played with Ross County, Inverness, Dundee United, Hibs Falkirk, Queen of the South and Clyde during a successful playing career.
Jambos sporting director Joe Savage said: "As much as we would’ve liked to have kept John, he felt the opportunity to take the next step in his coaching journey was something he couldn’t turn down.
“He goes with our best wishes and thanks for all of his efforts over the past three-and-a-half years.
“We have, in Steven, someone who is vastly experienced and more than capable of leading our Under 18s for the remainder of the campaign.
“He is someone that our young players look up to, such is his playing pedigree, and I’m very confident that he will be able to continue the great work that has been done in developing them for the future.”
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