– Distinguished Professor, Institute of Graduate Studies and Research, Alexandria University
– Professor, em., KTH-Royal Institute of Technology, Stockholm, Sweden.
– CEO (Managing Director), Micro Delta T AB (Ltd). Stockholm, Sweden. Co-founder, Spin-off Company for high efficiency Heat exchangers.
– Chair Professor, Head of several Departments at KTH Chairman, Functional Materials Dept.
– Chairman Materials Chemistry Dept.
– V. Chairman, Material Science and Engineering Dept. Chairman, Inorganic Chemistry Dept.
– Director (founder), Nano Characterization Centre
– Director of Graduate Studies Materials Science and Engineering Director of Nanotechnology International Master Programme
– Research associate /Research Director, KTH
– Graduate Student/Teaching assistant, KTH
– Research Assistant, National Research Centre, Cairo, Egypt