[4] He took his education in construction engineering at ETH Zürich before graduating from the Norwegian Institute of Technology in 1969.
[4] Shortly thereafter the company KV Forsvar was split from Kongsberg Våpenfabrikk, and Rimberg became chair there as well.
He had to overcome opposition from Leif Thue and the Norwegian Union of Railway Workers, then the wage question had to be sorted out.
[14] In February 1990, after thirteen months in the job, he resigned, citing lack of freedom from political regulations as the reason.
[15] Leif Thue and the Union of Railway Workers stated that they did "not lament" his resignation.
[24] He was chairman of Forskningsparken,[25] Anthon B Nilsen, STEP,[4] and Berstad Wallendahl,[26] a board member of Aschehoug,[27] Norge 2005,[28] and Aker.