My career has been two fold; including what is considered a traditional academic career and a career in industry.
[I consider my work as a physics PhD graduate student as part of my career. I understand that others feel differently about what constitutes a career in relation to degrees, but that is where I side with the issue. Simply put, I paid all of my graduate tuition myself with money I earned as a researcher, as an instructor, and as a professional in business. My results in research contributed to grants, publications, and invited talks and are results that are used by my research collaborators, the larger research community and have been built on (through citations etc). Finally, my research methods and results were regularly a source of conversation in industry in terms of relevant skills applicable to job duties.]
In terms of my graduate career, there are two components: Teaching and Research. Between 1997 and 2002 I taught approximately 500 students in upper level engineering courses, physics for science majors, and physics for poets. In 1999 as an independent consultant I wrote an integrated curriculum of mathematics and physics courses for a high school in Texas. The courses have continued to run between 1999 and today. In 2000 I was promoted to the level of faculty at the university where I was finishing my dissertation. Each of these teaching experiences were different, with different types of budgets, students, materials and objectives. If I were to pursue a career in education than these experiences would serve toward that end.
In terms of research, I worked in computational physics with astrophysical applications. As exotic as that might sound it simply amounts to a form of engineering work. I have worked closely with mechanical, electrical and biomedical engineers in industry and the bottom line is that the difference between our backgrounds occurs almost exclusively in the data sets. The day to day work horse techniques are universal; the only real difference is in experience with interpretation of the inputs and outputs [at this stage there is ample opportunity for debate since many forward that intuition concerning the data sets is what constitutes a 'professional'; be that as it may, the every day techniques are universal and the intuition for this kind of nuts and bolts work really occurs (at best) once a month or so].
In any event, the domain of application in my research was astrophysical. The work was done in a highly competitive enviroment characterized by multi-million dollar grants, super computers, world leaders in respective fields, PBS shows, and New York Times articles. In 1998 I was working in a research group that I greatly enjoyed. The work we were doing was very challenging and interesting and my colleagues and the atmosphere was anything anyone could ask for. In the spring of 1998 I was working in a group of two other researchers and we were regularly putting in all nighters 3 or 4 nights a week every week, month after month.
In the middle of that situation I was informed that my best friend of 30+ years was diagnosed with Multiple Sclerosis. As favorable as the prognosis is for MS the fact remains that MS is a disease of unkown etiology and course that adversely affects 1000's daily. Further, the treatments, literature and general understanding now for MS are not what they were in 1998. I read everything I could get my hands on; and everything I could get my hands on basically said the same thing: 'MS is not understood'.
Simply put, MS was a dramatic eye opener for me that put my life in perspective. My attitude about scientific research simply has not been the same since. What struck me was the profound disparity of the irrelevance of my work and the disparity of the energy I was investing in my efforts.
I finished my projects and continued in the general direction that I had started but it simply was not the same. I knew I had to find another line of work than a career in physics research. That actually wasn't good news for me, becuase I was 1 year in to my PhD with 4 more to go.
So, I started looking around for opportunities for alternate careers with focus on industries having more direct impact. I found a firm working in financical engineering that used a technology identical to the technology I was using in my research. I did look in to biomedical research but I could not find a fit between my research group in physics and a biomedical group. That left Financial Engineering alone.
So I settled for Financial Engineering. The thinking was: 1. A solid understanding of economics, business and finance is important and of direct impact, 2. The work will expand the 'marketability' of my skills / resume / CV, 3. There is a strong international component, 4. The work will pay the bills.
I established a relationship with the firm having dual purpose technology; where I could continue with my physics research 30 hours a week through the conclusion of my PhD while working for the firm 30 hours a week.
This arrangement worked well and I worked in Financial Engineering between 2000 and 2005 as an applied mathematician. My customers were leading Wall Street firms in America, Europe and Asia. The work led to recognition in the form of invited talks, invited work shops, numerous international consulting projects, contributions to patents, publications and revenue.
Something to note is that this period included the economic period 2001 - 2003. I don't know how or why we made it through that period, but we did. [Everyday that I left work I wondered if tomorrow was going to be the day we'd have to close the doors]. Somehow, someway, we made it. I believe part of the explanation for our ability to make it through that time was the nature of our products and their utility (economic justificaiton) for our customers (who were universally cutting back during this period).
I finished my PhD in August 2002 and received offers from NASA and elsewhere. I approached my firm and told them it was time for me to leave and they asked me to stay to help them out of the period they were in. It was simply impossible for me to leave them in a worse position then when I had joined them so I stayed until the begining of 2005.