Employment History
| 1975–1976 | Research Demonstratorship, Mechanical Engineering Department, University College Dublin |
| 1976–1978 | Mechanical Engineer, Adtec Teoranta, Navan |
| 1978–1979 | Research Fellowship, Physics Department, University College, Galway |
| 1979–1981 | Lecturer in Mechanical Engineering, Co. Carlow Vocational Education Committee |
| 1981–2000 | Lecturer/Senior Lecturer in Mechanical and Manufacturing Engineering, University of Dublin, Trinity College |
| 2001–2003 | Managing Director, Simtherg Limited, Dublin/Co. Kildare |
| 2002–2003 | Manager Applied Thermodynamics Simulation with SMCI Software Limited, London (on contract from Simtherg Limited) |
| 2003 (6 weeks) | Mechanical Inspector, Department of Transport, Dublin |
| 2003–2009 | Head of School of Mechanical and Transport Engineering, Dublin Institute of Technology |
| 2009–2019 | Professor (SL1-Teaching), School of Mechanical and Design Engineering, Dublin Institute of Technology |
Subsidiary Employment
| 1980 (8 weeks) |
Technical specification and estimating, Eckardt AG, Stuttgart, Germany |
| 1981 (9 weeks) | Modelling thermal response of buildings, Physics Department, University College Galway |
Sabbatical Leave
| 1994 (3 months) |
Laboratoire des Sciences du Genie Chimique, ENSIC, Nancy, France |
| 1999 (3 months) |
Developing simulation software. Simtherg Limited |