· Professor, Fukushima University (福島大学) (Current)2024–
· Professor, National Institute of Technology2015–2024
· Senior Researcher, Orange2008–2015
· Visiting Researcher, Kyushu University2007–2008
· Visiting Professor, Kyung Hee University, Korea2006–2007
· Foreign Specilist, Panasonic, Network R&D Center2004–2006
· Assistant Professor, Tohoku University, Japan2000–2004
· Assistant Professor Lecturer, CSE Department, Bangladesh University of Engineering & Technology1995–2005
· BS/MS, Computer Science and Engineering, Bangladesh University of Engineering and Technology
· PhD, MS, Computer Networks, Graph Algorithms, Tohoku University, Japan (東北大学)