Architect SAR (1977) PhD, History of architecture (1987) Docent, Theory and history of architecture, Chalmers technical university, Göteborg (1992) professor, history of architecture, at KTH Royal Institute of Technology, Stockholm 1993-2019. Editor of Arkitektur (The Swedish Journal of Architecture) 1990-92, member of editorial board, 1988-. Director of the Swedish Research Institute in Istanbul 2015-17, board member and other responsibilities 1992-. Active board member of CHwB, Cultural Heritage without Borders 1995-2020. Board member and vice chairman, Samfundet S:t Erik, Stockholm, 2009-14. Committee member, Kommittén för Gustavianska Parken, Stockholm, 2018-.
Mårtelius, J. “Istanbul’s Urban Public Space: Continuity and connections.” In Transformations of Public Space. Architecture and the Visual Arts in Late Modern Istanbul 1950-80, edited by E. Güngören, J. Mårtelius and G. Olsson, 14-19. Stockholm: Swedish Research Institute in Istanbul, 2021.
Mårtelius, J. “The Understanding of the Classical.” In Swedish Grace. The forgotten modern, edited by P Elmlund and J. Mårtelius, 36-49. Stockholm: Axel and Margaret Ax: son Johnson Foundation, 2015.
Mårtelius, J. “Memories and Cityscape.” In New Urban Topologies. Alexandria City of Layers, edited by R. Gordan, 53-56. Stockholm and Alexandria: Färgfabriken, Swedish Institute in Alexandria, 2012.
Mårtelius, J. “Art Nouveau and the Historic Townscape.” In Art Nouveau Time and Space. The Baltic Sea Countries at the turn of the 20th century, edited by S. Grosa. Riga: Jumava, 1999.
Mårtelius, J. “The Heart of the Realm. Stockholm around Norrbro.” In Water Cities. Saint Petersburg – Stockholm, edited by K. Abukhanfusa, 289-324. Stockholm: Riksarkivet/Arkitkturmuseet, 1998.