Groupon

In general, people are really friendly and well-intentioned. Everyone I've met within HR, benefits, support, and other engineering groups has been really helpful and a stand-up person. Even a few really interesting characters.

The selection of technologies in use, in my opinion, is questionable. I can't get into detail, but the choices being made do not make me think that Groupon is investing money and talent into the right places.

The unusual bits of culture within the company. "Inclusion" groups and the like, to me, are extremely weird and creepy. None of it has been mandatory, but it is nevertheless extremely odd to me.

Sensitivity to terminology could not be more understated. Be cautious if you have an advanced vocabulary. People here have the propensity to Google words and take the first definition without context and react with vigor. Personally, I find this behavior pretentious, but it is the way of the younger crowds. Speak carefully with small words.

Work volume is unexpectedly low. You may be blamed for this, even if it is not your job to supply the projects, only to execute on them.

First and foremost, be well advised that technological investments today will make or break Groupon entirely. The company would be wise to compare its choices against the strategies of companies with similar goals.