Optiver

There are some really nice and smart people. Work can be interesting. Having a barista on-site is quite nice.

Shame those nice people are not in a position to make change. Optiver used to be a nice place to work. Then management and HR decided that people could be more productive if they were told that everything they do can be better or done faster. A toxic culture of blame. People become withdrawn due to the excessive load and expectations. Some teams are worse than others. If someone decides a person should go, they will be bullied out of the company using a performance improvement program. If you are going through hiring, make sure to ask for a proper base salary, since your bonus depends on your rating, and that is at the mercy of management.

It is not enough to say people are the biggest asset. While profit is the first, second, and third most important criteria, the place will not be a nice place to work.