Óbudai Egyetem (Óbuda University)

Professor of Finance, Business and Project Management, University of Nairobi

Università degli Studi del Sannio; Università degli Studi di Napoli Federico II; ECGI

Kyiv National Economic University named after Vadym Hetman (KNEU)

Queen's University - John Deutsch Institute for the Study of Economic Policy

Dept of Building, SOES, Federal University of Technology, Owerri, Nigeria.

Associate Professor, BIBM

Department of Civil Engineering, Institut Teknologi Sepuluh Nopember

University of Nairobi- Centre for Open and Distance Learning

Assistant, Southern Federal University