Lee Diamandakis joined hedge fund-of-funds manager Mesirow Advanced Strategies as a senior associate. The position is new, said a spokeswoman. He supports the marketing, client service and business development teams at Mesirow. Mr. Diamandakis was a consultant and head of hedge fund manager research at Stratford Advisory Group. Susan McDermott, Stratfords senior vice president and director of research, said the firm is searching for Mr. Diamandakis replacement.