Check Point Software Technologies Developer interview questions

Two technical interviews in one I had to describe and explain product I developed from my CV and try to answer a diffucult question I can't remember but the focus was on the disscussion and in the second I got algorithm question.

hr interview, then we scheduled an interview with team lead. it was 30 min, and he asked about my experience, he talked about the team and the technologies they are working with. after that, he moved to the technical part.