Interview process for a QA Automation Engineer is as below :
1. Resume Screening
2. Phone call -Brief phone interview with Senior Recruiter(non technical). This round is around half an hour to check whether your skills and background matches the job requirement.If you are a fit immediately a coding exercise will be mailed to you.
3. A technical exercise-Coding exercise which is to be submitted within a week.
4. Phone Interview with Hiring manager(About the coding exercise submitted)
5. Onsite interview-4 hours usually.