Optiver

Great compensation package, really above average for the industry.

Breakfast, lunch, and dinner on site (actual food, not only soups and sandwiches).

Unlimited therapy sessions through a partner platform.

Cool perks like annual weekend getaways with the company, chair massage in the office, and coffee made by a fancy barista, etc.

Working from home? Not at all.

Inflated egos all around.

If you are in your first year, be prepared to be treated condescendingly (a lot).

Give an opinion on how to improve anything, and it is now your responsibility entirely (and no, your other responsibilities won't be shifted to someone else).

Be prepared to be working on both projects and production issues at all times (firefighting).

Recently changed bonus structure; multiple departments were left off.

Lack of clearly defined responsibilities per team (supposedly this would "cause the business to be slower facing the market").

Major decisions are being shifted without even the team leads knowing (lack of integration between business and tech).

Define responsibilities clearly.

Don't hire specialists to spend 90% of their time doing general maintenance work.

Allow for more flexibility. Do you really need to make everybody leave their house just so they can turn on a laptop in another building?

Hire more diverse people.