Ingemar has more than 40 years of experience within the Swedish public sector and more than 25 years in leading positions in the transportation infrastructure sector including director-general of the Swedish Road Administration and Swedish Civil Aviation Administration, chairman positions in, among others, Swedish Civil Aviation Administration, MAX-lab research facility, Öresund Bridge Consortia and Arlandabanan Infrastructure.
Ingemar started his civil service career as an operations auditor within the Swedish National Audit Office. From 1978 to 1986 he served in the Ministry of Finance and Ministry of Industry (current Ministry of Enterprise and Innovation) as permanent secretary and head of the Energy Supply Unit. Ingemar was Municipal Chief Executive of Södertälje municipality 1986 to1990 and served as Undersecretary of the Ministry of Transport and Communications from 1990 to 1991. He was director-general of the Swedish Civil Aviation Administration (LFV) between 1992 and 2001 and director-general of the Swedish Road Administration (Vägverket) between 2001 and 2009. Subsequently Ingemar was Governor of Västmanland County until 2014.
Ingemar is currently chairman of the board of Swedavia, the state owned owner and operator of the major Swedish airports.