Jan 2020: Chief Research Scientist: CSIR-Forestry Research Institute of Ghana
Apr 2019: Associate Professor, Department of Natural Resources Management, CSIR College of Science and Technology
Jan 2013 – Jun 2015: Deputy Director: CSIR-Forestry Research Institute of Ghana
Jan 2012 – Dec 2012: Head: Forest and Wildlife Management Division & Forest & Wildlife Unit, CSIR-Forestry Research Institute of Ghana
2010: External Examiner/Moderator: BSc. Forest Resources Technology, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
2010: Principal Research Scientist: CSIR-Forestry Research Institute of Ghana
Jan 2008 – Dec 2009: Head: Forest and Wildlife Management and Governance Division, Forestry Research Institute of Ghana
2007: Acting Head: Plantation Production Division, CSIR-Forestry Research Institute of Ghana
2002: Senior Research Scientist: CSIR-Forestry Research Institute of Ghana
1992-1997: Post Graduate Student: Nagoya University, Nagoya, Japan
1996-1997: Teaching Assistant: Forestry Department, School of Agricultural Sciences, Nagoya University, Nagoya, Japan
1994-2002: Research Scientist: CSIR-Forestry Research Institute of Ghana
1990-1994: Assistant Research Officer: CSIR-Forestry Research Institute of Ghana
1989-1990: National Service Personnel: Forestry Research Institute of Ghana