Checkout.com is simply the worst run company I have ever experienced. The leadership team is made up of incompetent people who simply say yes to anything Guillaume (CEO) says and are unable to think for themselves. The culture at the company is extremely toxic and everyone is only interested in protecting themselves. Coworkers are resistant to provide any help outside of their direct responsibilities. Leadership also chooses favorites and if you are not on that list you will not grow your career here.
If you care at all about your career you should run, not walk, far away from Checkout.com