Dickson, 45, who left his position as CFO at telecommunications company WinStar Communications, will replace Agency's CFO Ken Trush, the company said in a statement.
Agency said Trush, who has been CFO since 1997, will become executive vice president of corporate development, overseeing strategic alliances including mergers and acquisitions and joint ventures. Trush will continue to serve on the firm's board.
New York-based Agency competes in the highly visible Internet services market against the newest breed of services and management consultancies, including Razorfish, Scient, Viant, Sapient, Proxicom, and iXL. Last month, the company set its initial public offering price at a range of $10 to $12 and said it plans to sell 5.9 million shares.
As CFO at WinStar, Dickson was responsible for the company's financial operations, including helping in major strategic partnerships and coordinating both public and private equity and debt financing, Agency said.
Dickson also formerly held the position of CFO at $2 billion telecommunications company General Instrument where he was a key participant in the company's reorganization, including spin-offs of its cable and semiconductor businesses and the recent Motorola acquisition.
Founded in the beginning of 1995, Agency has several U.S. offices, including Boston, Chicago, and San Francisco, and international offices in Amsterdam, London, Paris, and Singapore. Included on its roster of clients are 3M, Bank of America, British Airways, and Compaq.