Pros: Amazing compensation (perhaps THE best in the country, comparable to USA pay at top-tier firms). Amazing benefits: * Restaurant-quality, freshly made food on site * Barista on site * Annual company trip Very smart people.

Cons: Bullying from management, and the company does nothing about it despite being aware of the numerous problems. Long hours and demands that things get done very fast (sometimes 12+ hours per day). Messy, undocumented legacy code, and nobody in the organization seems to even know the business requirements it solves, so it's nearly impossible to rewrite. Extremely poor code quality (e.g., things checked into code that should be in the database, or at the very least in a config; more layers of abstraction than needed; not adhering to best practices, etc.). Very poor culture. Colleagues are obsessed with money. Seriously, all they talk about is work and money. Yes, I like money too, but there's more to life than money. You effectively can't trade the stock market with personal funds as long as you're an employee due to huge restrictions they place on you being able to trade with personal funds.

Pros: Free and nice food. Good working environment.

Cons: Much less exposure. Optiver is not a tech-heavy firm.

Pros: Interesting problems and good people to work with.

Cons: Not enough people to get things done.