Anthony and Sarah Earley Professor of Energy and the Environment, University of Notre Dame, Notre Dame, IN (1/1/2015 – Present) ExxonMobil Research and Engineering Company (retired) (9/1/2014 – 12/31/2014) Manager, New Leads and Breakthrough Technology, ExxonMobil Research and Engineering Co. Clinton, NJ (8/1/ 2006 – 9/1/2014) Laboratory Director, Catalyst Technology and R&D Computing, ExxonMobil Process Research Laboratory, Baton Rouge, LA and Clinton, NJ (5/1/2002 – 7/31/2006) Laboratory Director, Petroleum Sciences Laboratory, Corporate Strategic Research, ExxonMobil Research and Engineering Co. Clinton, NJ, (6/1/2000 – 4/30/2002) Laboratory Director, Active Materials Laboratory, Corporate Strategic Research Corporate Strategic Research, ExxonMobil Research and Engineering Co. Clinton, NJ, (11/1/1999 – 5/30/2000) Group Manager, Catalyst Technology Process Research Laboratory, Mobil Technology Company, Princeton, NJ (1993 – 1999) Scientist, Catalyst Technology, Process Research Laboratory, Mobil Technology Company, Princeton, NJ (1989-1993) Sr. Research Associate, Corporate Research Laboratory, Mobil Technology Company, Princeton, NJ (1987-1989) Research Associate, Corporate Research Laboratory, Mobil Technology Company, Princeton, NJ (1985 – 1987) Associate, Process Research, Mobil Technology Company, Paulsboro, NJ (1983 - 1985) Sr. Research Engineer, Corporate Research Laboratory, Mobil Research and Development Corporation Princeton, NJ (1980 – 1983) Supervisor, 3M Corporate Research Laboratories, 3M Company, St. Paul, MN (1979 – 1980) Advanced Research Engineer, 3M Corporate Research Laboratories, 3M Company, St. Paul, MN (1977-1979) Research Engineer, 3M Corporate Research Laboratory, 3M Company, St. Paul, MN (1976-1977)