Pros: Working on some of the most exciting and challenging problems. Usually, good teamwork and opportunities to grow and take on more responsibility. It seems the culture has really changed over the past 2-3 years.

Cons: Some days can be long hours, but not as extreme as some people make out.

Pros: Great company, great work, challenging problems, visionary Founder!

Cons: Recently, there has been a bloating of the Project Managers and PMO office.

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.