I applied online. The process took 1 week. I interviewed at Infosys
Interview
Easy. It's just a basic phone screen and then a webcam interview with two people. One part is about OOP, so if you can talk about the four pillars in the most basic way you're fine. The other part is behavioral/experience. If you have any programming experience in any language you can always fall back on that if you can't talk much about the questions given.
No drug test if you're concerned, but your client can test you (often doesn't)
Look at the other glassdoor interviews and you'll get a VERY clear idea of the questions asked. It's really not hard.
I applied through a recruiter. The process took 2 weeks. I interviewed at Infosys (Brooklyn, NY) in Oct 2018
Interview
Took the aptitude test that consisted of 15 questions and had a time limited of 1 hour. Afterwards the recruiter then scheduled an online webcam interview which lasted about 40-45 minutes.
I applied online. The process took 2 weeks. I interviewed at Infosys in Feb 2018
Interview
Straight forward. What most people say on glassdoor. As long as you know the basics of CS you should have nothing to worry about. Most of the questions concerned general knowledge of programming.