AS EXECUTIVE director of New York’s Dewey Ballantine LLP, Dennis D’Alessandro draws up the firm’s budget, negotiates its key operational contracts and oversees its entire administrative staff.

In recent years, Mr. D’Alessandro, a non-lawyer, has expanded his role beyond the strictly administrative, joining the firm’s senior partners in discussions of firm strategy. He has offered opinions on international expansion and targeted practice group growth as means of boosting profitability at the 600-lawyer firm.