Rosenberg has more than 40 years of experience from international oil & gas industry. He started his career in Det Norske Veritas as surveyor for floating offshore units and marine vessels in Norway and Japan.
He continued as consultant and department manager for Risk Management services at Scandpower AS.
Later he was employed in Norgas Carriers AS as Technical Manager for 18 gas carriers. During this period, he contributed to develop the company with a number of newbuildings and establishment of fleet management offices in Asia.
Rosenberg was partner and in charge of developing engineering company Bassoe Technology AB in Gothenburg. He has over the last years been Project Manager for developing a prototype LNG carrier including construction and operation of the vessel.
He has experience as chairman and member of several Boards and he has spent the last 20-30 years working with companies in Asia.