He is reputed for his solid background in financial planning and reporting, treasury and financing, mergers and acquisitions, restructuring, and information systems. During his career, Comeau has been CFO of both public and private companies. Among them was Emergis Inc., a public company, where he was involved in its sale to TELUS Communications Company. He also worked at Nortel Networks, where he was VP of Finance for various divisions, and was notably CFO for an international joint venture with Matra. In addition, Comeau served as CEO of Media5 Corporation, a company that develops Voice Over IP software and hardware. Yvan Hamel