RSR Partners, a Greenwich, Conn.-based executive search and leadership consulting firm, announced Alan Renne will lead the firm’s industrial technology practice. Prior to joining RSR Partners, Renne was a managing director for Russell Reynolds Associates and was with The Coca-Cola Company in senior general management positions.

ON Partners, a retained executive search firm, appointed Heidi Hoffman as partner. Hoffman will lead the firm’s supply chain practice from its Atlanta office. Hoffman most recently was a senior client partner at Korn Ferry, where she led the firm’s Global Supply Chain Center of Expertise in North America.

Soltech Inc., an Atlanta, Ga.-based firm that provides IT staffing among other services, added two members to its leadership team: Edgard Negron as head of marketing and Chris Tyner as leader of technical operations. Most recently, Negron led NewPoint Media Group’s digital marketing department, while Tyner was a member of the leadership team in a joint venture between Sharecare and the Hospital Corporation of America.