Who: Ben Hakim

Age: 34

Executive Post: Managing Director of Blackstone Advisory Partners

Why he's young and fierce: Hakim joined Blackstone Group back in 1999, at just 23 years old. He was recently recognized by Fortune as one of the "fresh-faced stars" of Blackstone, who has not only thrived at the alternative asset management company but in the industry overall. "He graduated with highest honors, got to the firm, and then quickly worked his way up the ranks until he was considered a go-to person for important assignments," noted Fortune. "Hakim also played a senior role representing AIG's post-crisis restructuring."

Some of Hakim's esteemed clients include Microsoft, AIG, General Growth Properties, Blackstone Real Estate Partners, Citibank, Clear Channel, Central Parking, YankeeNets, Centerplate, Sony, Pershing Square Capital and DreamWorks, according to his company profile.