30m interview with a Microsoft employee. Was a basic overview of basic programming skills, such as testing and Big O. Followed up by a simple programming problem to solve on the white board. The interview was focusing less on your answers and more on how you respond under pressure, and your though process to get to a answer.

3 rounds of leetcode medium, 2 questions were very easy, the last one was really hard (it was a binary tree question). They asked about space and time complexity. In terms of structures it was straight forward but the question itself was hard