Dorian has been at the University of Zagreb since 1978. Before joining Design Department in 1984, he gathered engineering experience at Quality Management department and Design office (1970-1975) at SILA-RAPID Company and Computing Centre of Faculty of Mechanical Engineering and Naval Architecture (1978-1984). He led the Chair of Design and Product Development at Design Department from 1996 until 2016. He has been retired in 2018. In April 2019, he has been promoted to the honorary title professor emeritus.
Dorian worked in activities of EU Group on Innovation organised by KTH, TUM and EDC Cambridge. He was running research projects “Models of Intelligent Computer Aided Design System” (1996-2001), “Models and Methods of Advanced Computer Support to Product Development” (2002-2006) and “Models and Methods of Knowledge Management in Product Development” (2007-2013).
A complement to research work and engineering projects Dorian Marjanović was involved in teaching on undergraduate, master and PhD studies. Currently, he is teaching courses: Introduction to Engineering, Product Development, Design Theory and Innovation Management in Product Development.
He was responsible for the international teleconferencing course "European global product realisation course - EGPR" since y. 2003 in cooperation with TU Delft, Univerza v Ljubljani, EPFL Lausanne City University London and University of Budapest.
Since 1998 Dorian is responsible for DESIGN conference.
He was the member of Editorial Boards of Journal of Engineering Design, MMA and International Journal of Design Creativity and Innovation.
The Institute of Engineering Designers (UK) acknowledged his contribution to engineering design research awarding him with "The Hills Millennium Award" for the year 2012.
He is a member of the Design Society, and he was the President of The Design Society from 2013-2017. The Design Society awarded hium in 2019. with the title Fellow of the Design Society to recognise his outstanding contributions to the Design Society through service, practice, teaching, and research.