21c Museum Hotels has announced the appointment of Mike Wajda as executive chef of Proof on Main restaurant at 21c Louisville, 702 W. Main St.

Wajda  comes to Proof from the Michael Mina Group, where, as corporate sous chef, he helped manage the group’s portfolio of 23 restaurants and over 1,500 employees. He previously has cooked at Craigie on Main in Cambridge, MA, as well as Restaurant Gordon Ramsay at the London Hotel in New York City.

Proof on Main’s classic dishes such as charred octopus and the Proof Bison Burger will likely stay on the menu as Wajda works in his own ideas for the restaurant’s cuisine.

Wajda replaces chef Levon Wallace, who left Proof in March to become executive chef at Cochon Butcher, a New Orleans-inspired restaurant in Nashville.