Pros
I've worked for a lot of companies, but DocuSign is the first place that I've felt like they actually WANT people to stay here for a long time. They aren't trying to burn you out and then toss you aside like many tech startups. There is a proven track-record of promoting from within, investing in employees (For example - just started a masters level leadership program through the University of Washington as a free benefit to leaders within the company). Leadership is thoughtful, caring, and respectful of their employees and truly committed to seeing them succeed, and not only succeed, but be happy and fulfilled. The pay is fair and they do what they can to add perks throughout the quarter, but they're not throwing money into stupid things like bean bags and razor scooters just to make it seem like this is a cool place to work. It's just a good place to work and people want to come and give their best. Plus, it's a pre-IPO company that is poised to have a great public launch.
Cons
There is getting to be a bit more corporate feel (more levels of approval to get a deal done). Comes with the territory as a company gets bigger and more successful, but it does slow things down a bit.