Pros
I have to say that DocuSign is a place where you can "coast" and if you aren't bothered by having to follow painful and inefficient SDLC processes, this is the place for you. Perhaps with the stock hitting a big dip, this may be a good time to join, so if you want to "do the work of your lifetime" (namely work 4-5 hours a day and be stifled by an outdated tech stack and ridiculous processes) and have decent comp, then this may be the right opportunity for you.
Cons
Other 1-star reviews have already noted the criticisms around DS' tech stack, processes, and general cultural downturn. I would like to add that one of the main fundamental problems I found in DS engineering is that you are rewarded for "following rules" - meaning how well you follow an inefficient and ineffective process rather is more valued than innovating to make it better for others. Because this type of mentality is rewarded, DS then hires a lot of "expert beginners" - engineers who are just really good at following rules and doing what they are told, as a result almost any mid-level to senior engineer is really just an "expert beginner" rather than the industry standard of having a principal/staff/tech lead that ideally should be solving problems across the entire org rather than being an expert in their own silo. In general, change is something that isn't really embraced, and you get labeled as an underperformer if you try to suggest otherwise. I think it goes to show the type of culture at DS. In my experience, I found that people who "follow rules" really well also get away with being jerks. I think in the past many of these issues were overshadowed by a booming stock price, but now that it has taken a dive, I wonder if these things would ever be addressed. My guess is most likely not anyways.