Career Opportunities, at least in some teams, seem a little limited, especially with how small some of the teams are. Unless you take your Manager's position, the best you might be able to do is have a "Sr." put in front of your title, with hopefully a nice raise.
HDHP - premium for a family is nice and low, and if you don't typically need to use your insurance much this is a decent plan. But, for others with more frequent healthcare needs you'll be paying quite a bit out of pocket until you hit that deductible. However, they do chip in $500-$1,000 every year to your HSA, which is nice.
They are outgrowing their database/development platform, but efforts are being made on technology upgrades/re-writes, etc. So, there are some current growing pains here, that depending on your role may or may not affect you.
There are a few underperforming employees that can sometimes be a challenge to work with, and positive changes on this front seem somewhat slow to progress.