Research Assistant, University of Warwick (1988-1990)
Research Assistant, University of Sheffield (1990-2000)
Visiting Professor, University of Minnesota (1997)
Senior Process Engineer, Marconi PLC (2001-2002)
Senior Research Scientist, University of Sheffield (2002-)
Responsible for Molecular Beam Epitaxy Growth in the National Centre for III-V Technologies
Development of new methods and technology for the growth, processing and characterisation of III-V photonic devices and nanostructures.