First Interview, with senior engineer. Quick Q&A in Computer Science and Two whiteboard questions, with difficulty ranging approximately from easy to medium. Second Interview, with CTO. Two whiteboard questions, with difficulty ranging approximately from easy to medium. System Design Finally, discussed salary with HR and CTO.

4 phases, phone interview, 2 onsite interviews, and offer discussion. The first phase will ask a few questions about os and compiler, then you need to solve 2 algorithm questions.