Vantaggi
Very high pace of work and technical demands - challenging - you work on the cutting edge and AMAT is actively looking for new business areas to pursue. Some mix of the good qualities of a big company (institutions and internal functions work OK, overall consistency of workforce is OK - few idiots hired, year to year performance is solid) with some of the good qualities of a small company (people are actively looking for new business and feel connected to the bottom line). The AMAT name goes a long way when talking to suppliers and vendors and that makes you more effective.
Svantaggi
Hire and fire culture still exists in 2011-2012, ten years after the bust. Forced shutdowns means vacation time is eaten up. You have job security if you move around in the company and look for opportunities inside. If you stick in the same spot you will eventually get RIF'ed no matter what your competency. Huge turnover rate means you get people coming and going and coming back all the time. Causes AMAT to have a bad rep sometimes when the person who is about to leave just drops the supplier/vendor relationship like a lead balloon.