Denis has 27 years of experience working in senior management positions with Ericsson across various countries in the world, including Sweden, Vietnam, Hong Kong, Sri Lanka and Australia.

On 1st July 2017, Denis was appointed Ericsson President and CEO for Vietnam, Myanmar, Cambodia and Laos, having previously headed the Ericsson business in Sri Lanka and Maldives since 2014.

Prior to 2014, Denis was the Vice President of Ericsson in Vietnam for 6 years, and he received the Campaign Medal from the Ministry of Information and Communications in March 2014 for his contribution to the development of the ICT industry in Vietnam.