1. Researcher, Bangladesh Road Research Laboratory, Dhaka, Bangladesh.
2. Research Assistant, Bureau of Research Testing and Consultancy, Dhaka, Bangladesh.
3. Additional Chief Engineer, Technical Services, Roads and Highway Dept., Dhaka, Bangladesh.
4. Executive Engineer, Environment Division, Roads and Highway Dept., Dhaka, Bangladesh.
5. Ph.D. Candidate, Transportation Engineering, CAEE, UT Austin, Austin, TX.