2016 - present: Professor in Chemical Engineering, University of Chester 2013 - 2015: Senior Lecturer, Chemical Engineering and Applied Chemistry, Aston University 2002 - 2013: Lecturer, Chemical Engineering and Applied Chemistry, Aston University 1997 - 2002: Research Assistant, Bioenergy Research Group, Aston University. 1990 - 1995: Group Leader, Combustion Section, Power Technology, PowerGen plc., Nottingham 1983 - 1990: Technologist, Combustion Department, Engineering Division, Rolls-Royce plc, Derby