Alternative investments firm Quadrangle Group has lured a Goldman Sachs partner to serve as its chief operating officer, it said today. Doug Kramer will head the New York-based firm’s non-investment operations and its strategic development.

Quadrangle was founded by journalist-turned-venture capitalist Steven Rattner, and focuses on media and communications investments. The firm, which manages $6 billion in assets, has groups focused on private equity, a hedge fund strategy and its new asset-allocation fund of funds unit, Quadrangle Asset Management. Kramer will in part focus on the development of QAM.

“This is a very exciting time at Quadrangle,” Rattner said. “In just the last year we have opened offices in London and Silicon Valley, and announced plans to open an office in Hong Kong, in addition to our major new initiative, QAM. We are confident that with the addition of Doug, we are well positioned to effectively manage our growth and to continue to add value to our investments.”

Kramer, who spent more than eight years at Goldman Sachs, most recently served as head of global manager strategies.