Visa Inc. Data Engineer interview questions

I applied online and eventually got invited to do a codesignal assessment within 3 days of receiving it. The codesignal was tough for me but doable with more practice. Overall, the experience was ok, Im not really sure about the later rounds.

The interviewer asked for my CV then asked me to tell more about myself. He then introduced himself. I had projects on android, web development as well as a chat bot, he was pretty impressed. He asked me the difference between an android OS and windows desktop OS followed by the difference between security implementation in both. Then he asked the series of steps to perform while user is switching to or from your application in android. Then an interesting question on what cases will you have to handle if you get a txt file for a C++ program and you have to put the code in a format that looks presentable ( look up what C Beautify is and what it does ). I mentioned that I had started watching ML tutorials online so he asked me some questions on the tutorial to make sure I wasn’t lying XD . He then asked me if had a question for him.