There will be three rounds.
First round will have basic C concepts or Python, depending on the job profile you are applying for. A program might be given to write to implement some data structure or algorithm.
Second round will be some operating system-related questions.
The following metrics were computed from 18 interview experiences for the Red Hat Software Engineer role in India.
Red Hat's interview process for their Software Engineer roles in India is fairly selective, failing a large portion of engineers who go through it.
Candidates reported having very good feelings for Red Hat's Software Engineer interview process in India.