Rebecca Nolan has been named senior vice president and managing principal of St. Louis architect HOK. She succeeds Vice Chairman Clark Davis, who is taking on new duties in its worldwide practice. Nolan was senior vice president at engineer-architect SmithGroup Cos. Inc. and managing director of its Minneapolis office. Also joining HOK as vice president and director of interior design in St. Louis is Michael Nolan. He was a vice president and workplace studio leader at SmithGroup.

Michel Jichlinski has joined Greenway Enterprises Inc., a Helena, Mont., contractor and construction-management firm, as director of operations. He is the former Washington, D.C.-based president of Louis Berger Group and is now based in Greenway’s Silver Spring, Md., office.