Pros
They make an effort at defining the office culture. Nice benefits (Betterment 401(k), company outings and vacations, flex vacation policy, catered lunches, dogs in office). Stellar product. Smart, talented, hard-working individuals. Also, this could be a pro or con depending on what you want, but the workforce skews twds the mid-late 20s to early 30s. For many folks this is their first "big girl or big boy" job, so be prepared - some are clueless as to how a real corporate org. works.
Cons
Product: Seemed unfocused, and the service is morphing/resembling more of a robo-advisor with a human if/when you need it, so does this still make it a robo-advisor? Upward Mobility: Your success depends on your manager and area. Frankly, my dept. felt bloated with managers. As with any company that is growing, politics and egos are rampant, and you may even end up in a situation where you're asked to generate new ideas and be a leader, but only when it's convenient for an insecure/inexperienced manager, who gives mixed messages, does nothing with those ideas, but is happy to go around espousing self-labeled "high level feedback."