Tangem IOS Engineer interview questions

first round was a brief HR screening, 15 min at most. The second round was an interview with an iOS lead and another developer. We discussed my previous experience as an iOS Developer and projects I worked on. After that they presented a code that I need to refactor using SOLID principles. The atmosphere in general was very positive, but I noticed the lack of nudging me in the right direction when I was confused. Generally I think I failed the coding assignment, because I was confused and not sure what they wanted from me. That’s why the interview took longer than I expected I think. We also discussed some aspects of functional programming in the end.