Pros
Rank and file are generally great. Some good benefits. Unlimited PTO so take as much as you can.
Cons
As others have noted, product whiplash. There's no commitment to any path forward for any period of time. Hard to sell a product that's constantly changing and extremely fragmented. Whatever CTO is currently interested in is the priority. Leadership (CEO/CTO) has fragile egos and key executives refuse to be accountable for their actions and can lead to retaliation. I wouldn't trust most of HR and definitely not most of the c-suite. CEO told company that company culture was NOT his responsibility after laying off 25%+ of the company and having no plan for moving forward. These people are like a caricature from the tv show Silicon Valley - too busy sniffing their own farts to realize they stink. Very little promotion from within, mentorship, or clear career development. All the good people already left.