I applied online. The process took 1 day. I interviewed at Ansys in Mar 2015
Interview
1 hour phone interview. Half hour each with my Manager to be and a Senior Testing Engineer.
Senior Testing Engineer enquired about all the projects and experiences listed on my resume. Those were enough to help him ascertain that I had the knowledge and skills required for the position.
Manager explained all the nuances of working at ANSYS Inc. as a co-op, the visa related requirements (being an international student), salary, etc. This was quite like an HR round.
Interview questions [1]
Question 1
1 Are you a graduate or post-graduate student?
2 Have you graduated from your degree?
3 Do you have a car or some provision for transportation to & from work