I applied online. The process took 2 months. I interviewed at Optum (Gurgaon, Haryana) in Aug 2018
Interview
It was cool but HR team take much time to release the offer . Interviews rounds went back to back within 10 days. You can easily apply on their job portal, if profile meets then you will get mail.
Interview questions [1]
Question 1
Related to profile and interviewer try to understand the capabilities of the person
I applied through other source. The process took 2 weeks. I interviewed at Optum (New York, NY) in Aug 2018
Interview
Process was nice simple and result oriented.
2 hour of complete interview duration in which 2 rounds of interview happened
Overall it was a nice experience . They had arrange lunch facility as well.