Susquehanna International Group

There are great benefits such as a tasty cooked lunch every day, as many snacks as you want, a well equipped gym as part of the office and regular personal touches to make you feel valued.

Working with very smart and driven people makes it easier to improve your skills.

There is great pay but also reasonable hours that allow you to have a life outside work.

The work day is quite intense which makes it hard to catch up on continuous learning. It's shown by the tech stack being a little dated. Everyone there is open to modernizing things where there is benefit but you most probably can't start with untested toy libraries which would help make you marketable outside the company. It's not exactly a bad thing though because you are writing production code that is heavily optimized and used by users instead of switching frameworks every 6 months.