Having worked for many years for a notable neighbour in Amsterdam I can only caution you on joining any Dutch airline.
You will soon realize that you're an outsider, they will alienate you in the workplace. And our job relies on some form of communication to get the job done.
Not going to share here the second hand stories I heard about their CRM, could be true or could be false. You can of course risk it and tell us later.
But if you dont have a job, then go for it. It almost better than staying without flying.
Do not confuse TUI netherlands/belgium with TUI UK or Scandinavia, nothing to do with each other in terms of company culture.