Pros
I recently started at Shell and have been amazed day after day by the multitude of opportunities and businesses Shell is involved in. Not only does the company offer a great work / life balance and competitive compensation, but they encourage movement to other groups / disciplines throughout your career. I came to Shell for options and opportunities throughout the energy business and world, boy do they deliver! The interview process was also easy and Shell communicated with me throughout the entire process. No other outfits I had previously applied or worked with offered the same level of communication they did. Whether you are in serious consideration for a position, or they are looking elsewhere, you will be notified of the decision. Very respectful to applicants.
Cons
While you get "credit" for previous experience as it pertains to vacation, you "restart" when it comes to pension and 401k contribution seniority. The good news is the programs are semi-competitive, and only get better / surpass the competition as time goes on.