I applied for Intern position online in March 2018 at Regeneron Pharmaceuticals and heard back from them in few months and the first round interview was an On demand video interview. It is pretty challenging and interesting hiring procedure. Really liked the experience.
The interviewer was very nice and respectful. It was evident that she is passionate about her work and eager to share her expertise. It is a shame I wasn't offered a chance to join the company, but my positive experience encourages me to try again in the future.
Hirevue and then meeting with several teams they think you're a fit for, non technical but might ask technical questions depending on role. Pretty casual but your experience at the company is very team dependent
Overall there were two interviews. One HireVue technical that also asked you to complete some details (like start time, salary, etc.) and one interview with your manager, Pretty standard interview