(Updated 2005, first version somewhen in 2003)
I am physicist and IT consultant, with experience in R&D (as a researcher and as IT services manager) and as an IT consultant, delivering security projects to customers in various industry sectors. Here is my detailed CV and I have given this interview (in German) when I was about to change from employed to self-employed consultant.
I think we are not completely characterized by any official name of a profession, but better by the roles we acquire in different positions throughout our career and private life. I have considered myself always acting in one or both of these roles:
between human beings, groups or organisation with conflicting goals
co-ordinator, not manager
searching for win-win situations
searching deep foundations
obliged to 'objective truth'