2012 - Current, supporting users of the IHS (formerly SMT) Kingdom Geology and Geophysics package. This role encompasses primarily support, but also Microsoft C++, MFC and Windows Forms programming and debugging. I have gained significant domain knowledge of geology and geophysics, including seismic loading and presentation, surface picking and management, data management and terrestrial coordinate systems.
2008 - 2012, iPhone application development.
2004 - 2008, I have four years working on gas-pipeline management software for a highly successful Dallas and Houston private software consultancy, being promoted from consultant to manager over that period.
1996 - 2003, I have eight years experience at successively higher levels in Schlumberger Oilfield Services, rising from help-desk/IT Support through software design to application architect.