I worked at InterDigital full-time (More than 10 years)
InterDigital was a great place to work. My boss was excellent. Everything was state of the art.
Unfortunately I came in when the person who was training me was having some issues so I had a lot of things to clean up in the process of learning. No gripe against the company just not and ideal situation.
I applied through a recruiter. The process took 4+ weeks. I interviewed at InterDigital in January 2017.
Phone interview with two engineers that lasted for about 60 minutes.
The format was exchange ideas of the prospect projects, the company, and your experiences.
The questions asked were technical and well defined.
Reasons for Declining
The offered salary is way below the market value for my experiences.