[1][2] Rosengren holds a master's degree in mechanical engineering from Chalmers University of Technology, Gothenburg, Sweden.

[5] Rosengren was the business area manager for Atlas Copco's construction and mining equipment division and Senior Executive Vice President for nine years from 2003 to 2011 before he left the company 2011 to serve as CEO for Wärtsilä.

[6] He had been mentioned as a strong candidate for the CEO position at Atlas Copco in 2009.

[6] In 2015, he left Wärtsilä to become the CEO and president of Sandvik, where his decentralisation strategy proved profitable.

[2] Rosengren is a member of the International Business Council (IBC) of the World Economic Forum[5] and of the European Round Table for Industry.