Great place to start or finish your career - Petroleum Engineer Shell Employee Review

Depending on your skill set, you can be pigeon holed quickly (and it could take you years to figure it out). Management and HR literally estimate your maximum potential at the company. I lovingly referred to it as my glass ceiling. There are periods when they hire management from other companies, which disincentivized people in management to stay. (Look at the bios of top management in the US to see if they left Shell and came back.) Maybe this has changed since I have left, but it’s something to keep in mind for career planning.