Martin à Porta will join Pöyry on 16 November 2015, which will allow him to get acquainted with the company before taking up the CEO position.

"We are preparing for a smooth and quick transition between Alexis and Martin," says Henrik Ehrnrooth, Chairman of the Board of Directors of Pöyry PLC. "Martin will be well prepared to step into the driving seat as we start 2016."

"I am excited to be shortly joining the Pöyry team," says Martin à Porta, currently CEO of Siemens Building Technologies in Europe. "I am looking forward to getting to know Pöyry's clients and people, building strong relationships across the whole business and learning more about the areas of expertise that make Pöyry such a unique knowledge organisation."