Stripe Machine Learning Engineer interview questions

2 technical screens (coding, ml coding), onsite was 4 rounds (coding, debugging, system design, hiring manager). Coding questions were OOP and class oriented. Problems were practical, the ml coding round had a dataset provided and you had to build and evaluate a model in 1h.

1 hour hackerrank involving payment processing. Questions were easy, but the output types are not given, so you spend most of the time guessing what hackerrank wants. The question is split into multiple parts and you're not able to test individually. Complete waste of time.