All basic c++ concept you should know. They will ask you lots of puzzles. Very basic OOPs concepts and STL. They will not ask you any advance level concepts of computer science and the interview process will have 2 round of basic c++ questions and puzzles.

The interview process is a multi-stage evaluation where an employer assesses a candidate's skills, experience, and cultural fit through questions, assessments, and cultural fit checks, aiming to determine if the candidate is qualified and the right match for the role and company.