Don't believe the 5 stars reviews.
Pros
It's a company. You will have a desk and a chair. Yes, even a powerbook.
Cons
High turnaround of people. Very weak management. Weird culture. No training. No knowledge sharing. No competitive salary (heard sales people who started over 3 years ago never claimed their commission b/c their clients are still not running 100% volume). They hire a bunch of young people from out of town (San Francisco) who want to be part of a cool startup in Silicon Valley because they heard 'tech is cool' now. Problem, it is not a Silicon Valley or U.S. tech startup, it's a Dutch company with over 450 people. Bureaucracy, super slow processes, people at the HQ in Amsterdam go home on time and don't care that you just started your day at the U.S. west coast and have an issue with a customer or the system. People who talk here about a cool startup or cool culture never worked for real startup and are brainwashed by management. Period. If your passion is Fintech look elsewhere. There are many great companies with even better newer technology.