Avantages
Huge opportunities for growth and advancement (I've not personally experienced this but some of my colleagues have), mostly young employees eager to do well, fast-paced environment (if you're into that sort of thing), opportunities for travel, competitive entry salary and benefits
Inconvénients
Lack of ongoing, consistent, formalized training. Huge lack of company culture - there seem to be pretty wilted efforts to build a company culture. This results in something that, in my opinion, screams "boring corporate entity". Lots of inconsistency across productivity channels - some things that seem like they should be standardized are not, which leads to a lot of confusion and inability to pinpoint when things go wrong. Also, work/life balance is difficult. Expect to work 9-10 hours every day. A standard 8-hour workday here doesn't really exist. Weekend work also happens.