Pros: - Small, collaborative teams with passionate people. - Constant work on projects that add business value. - Ability to experience rapid career growth. - Opportunities to take ownership over large projects from early stages of your career.

Cons: - Hours can be long and demanding, so managing expectations is very important. - High turnover and tight deadlines can be quite stressful at times.

Pros: The comp sets the bar for the entire industry. Free, albeit largely bad, food.

Cons: The vast majority of the "engineering" work at Citadel is low-level maintenance and end-user support. The focus is keeping the lights on, with effectively zero thought given to longer-term projects. The engineers who succeed here are the types who can produce huge amounts of exceedingly mediocre code on short notice. Despite the nature of the work, this is a high-pressure environment. Management talks a big game about investing in technology to scale the business, but ultimately this means turning the screws on lower-level employees, rather than actually building scalable systems. Eventually, systems/groups end up in crisis after one too many patches/hacks. The response to such a crisis is inevitably a kind of Banzai Charge – throw guys at the problem until it has been hacked into submission in the immediate term, then pray it stays working through the next bonus cycle. I can only speak for the engineering side; I assume, given the success of the fund, that other areas are better.

Pros: Good in general for growing a career.

Cons: I don't have a specific opinion.