[1] His research focuses on flow of fluids and transport of solutes and colloids in porous media, through theory development, experimental studies, and modeling work.

Formerly, he has been with Abadan Institute of Technology (Iran, 1979–1982), Project Manager with Yekom Consulting Engineers (Iran, 1982–1984), senior researcher with the National Institute of Public Health and Environment, RIVM (Bilthoven, The Netherlands, 1984–1995), Associate Professor (1995–2001) and later Professor (2001–2003) with the Faculty of Civil Engineering and Geosciences, Delft University of Technology.

He has been leading and/or participating in a large number of projects funded by European Research Council, NWO, EU, TRIAS, SKB, TNO, BTS.

InterPore is a non-profit-making independent scientific organization with the aims of advancing and disseminating knowledge for the understanding, description, and modeling of natural and industrial porous media systems.

After about half a year, the new regime launched the so-called "cultural revolution", closed all universities, and encouraged all students and teachers to work in industry or agriculture.

While working at a consulting company on drainage and irrigation projects, Majid learned about a post-graduate course in hydraulic engineering at IHE Institute in Delft, the Netherlands.

After finishing the course, he was offered a research position at the Netherlands National Institute for Public Health and the Environment (RIVM).