2005-:   Reykjavik University, associate professor, subjects: Structural mechanics and structural design
2002-2005: Technical University of Iceland, associate professor,
1990-2002: Icelandic College of Engineering and Technology, rektor
1981-1990: Icelandic College of Engineering and Technology, Head of Department, Civil and structural engineering.
1981-:  Own consultancy in the field of structural analysis and design, especially in larger and complex structures..
1974-1980: Icelandic College og Engineering and Technology, Part-time lecturer in structural mechanics and reinforced concrete design.
1972-1980: Hönnun ltd., Consulting Engineers. Civil Engineer. Among projects participated in: Sigalda Hydroelectric Project, structural design og powerhouse, from 1973 to 1977.

1992-: Occasional serving on the Bench at the District Court in Reykjavik in cases concerning disputes on construction and property affairs.
1990-: Have occasionally served as assesor for the law courts in cases concerning constriction projects.
1990-1994: Icelandic representative on subcommitte CEN250/SC1 on Structural Eurocodes, Basis of Design and Actions on Structures.
1987-1995: Member (On behalf of the College) of the Icelandic Council on Building Codes. Two years as member of the board.