HackerRank Software Developer - Internship interview questions

The recruiter contacted me via Phone Call at about 9 PM, just to discuss the interview process, booked the telephonic interview with the CTO which was about 20-30 mins long, The interviewer was 5 minutes late and didn't even apologize for being late. It has been about 3 weeks that they haven't made a follow-up even after mailing the recruiter twice.

They asked me questions based on my previous projects, open source contributions and skills. They didn't asked questions based on competitive programming and data structures and algorithm. So, focus on your open source contributions.