Two Sigma reviews

Technical debt (but not worse than most other companies)

A lot of people are condescending and not helpful. Outdated tech stack with a ton of stuff built internally. This means that the skills you learn (ie working with their build system) wont translate to your next job. Impossible to work with internal mobility process. Super slow, people make it impossible to move by making you endure entire days of interviews like it's still 2016 and they have their choice of FB/GOOG/AMZN employees to choose from. At that point you might as well just look externally. They claim it's an easy process, but it is anything but. Unless you end up on the right team, there's a good chance the work wont be super interesting. General thanklessness/rudeness towards people who manage tooling and things of that like.