Scenario based problems on how you would approach simulating and testing different pieces of their rockets. First five min were an overview of everybody's background. Asked basic C++ / C programming questions

The HackerRank assessment consisted of two 30-minute questions that appeared to be based on simple problems but were modified in an unnecessarily complicated and ambiguous way with poor technical writing skills. Requirements were vague and open to multiple interpretations, making it unclear what was actually being asked, thereby creating a frustrating and ineffective assessment experience. I have a great deal of respect for Blue Origin, but I was not impressed by their use of HackerRank for this evaluation.