The Sarasota-based communications agency Next-Mark recently hired two new staffers and promoted two more. Laura Castro, the company’s new manager of client experience, comes to Next-Mark from University of Florida Health in Gainesville, where she served as communications coordinator. She oversees and guides client campaigns for Next-Mark. Ryan Hoevenaar, meanwhile, joins the Next-Mark team as its manager of creative and digital content, following a successful career as a freelance graphic designer. The company also recently promoted Austen Legler, now senior manager of client experience, and Alissa Moore, manager of brand and design. Next-Mark has clients from Alaska to The Netherlands, with a roster that includes LexisNexis, Elsevier, Nuance Communications, Cinebistro, Cobb Luxury Theatres, Yarnall Moving and Storage, Coldwell Banker, California Pizza Kitchen and more.