Sony Ericsson’s chief technology officer Mats Lindoff is set to leave the office after the company faced gloomy months in its business.

“After six inspiring years I have decided to pursue other opportunities outside Sony Ericsson. To be a member of the team who has built up Sony Ericsson has been a great privilege,” said Lindoff on his departure.

Citing desire to pursue new career opportunities, Lindoff said he will leave the company by the month end, as he will be seen succeeded by Ronald Louks, the current deputy CTO.

Louks is taking over as the company is reeling from a slumping economy that''s hurting demand for its high-end devices. While the smartphone market is expected to grow in 2009, it's becoming overtly crowded with handsets like Apple, HTC, Microsoft and Nokia for customers' attention.