LONDON Bob Iannucci has resigned from his post as chief technology officer at Nokia with immediate effect.
Nokia (Espoo, Finland) said he was leaving for "personal reasons" and that Iannucci would continue to work as an advisor to the firm until a replacement is found.
Henry Tirri, a research fellow at the Nokia Research Centre has been appointed head of the division in the interim.
Iannucci joined Nokia in 2004 to head up the company's Computing Architectures Laboratory at the Nokia Research Centre, where the Finnish firm focuses on basic research. He took the post of CTO in January this year.
He had held a variety of research and development management positions before joining Nokia, including at Compaq, Digital Equipment Corporation (DEC), Exa Corporation, and IBM.