HARMAN Software Engineer interview questions

I applied through LinkedIn. Received call from hr within 2-3days and it was a telephonic round too. I was called for onsite interview. First round was technical. It was about how we are strong in basics. Had a nice conversation with the panel member. Second round was also a technical round. Third round was tech 3, they asked about performance tuning, APIs, abstract classes. Next round was with the core team manager. Only because of her I wish to join Harman. She was very kind and helpful. Final round was a hr discussion.