Regeneron Manufacturing Engineer Interview Questions
& Process

So first there was an HR Screening, then I had a one-on-one video call with the hiring manager. After that, it was panel interviews with 8 people, each for a half hour. I've interviewed for two positions and made it to this stage. Whether the panel interviews are onsite or virtual depends on the hiring manager's preferences and timing. The panels include the hiring manager, senior leadership in the open position's hierarchy, and people who would work closely with the candidate.

I first met with a recruiter at a career fair, and then an outside recruiter for the company reached out for a phone interview, which was like an initial HR screening. After waiting about 3 weeks, HR called to set up an interview with the hiring manager. I had a 30-minute interview with the HM and was contacted the same day via email to schedule an on-site interview for that same Friday. It was a long 6-hour day, but everyone was friendly and asked technical questions about the role and my background. I got the job offer in less than 10 days. It was a good experience overall, a long day but you learn a lot about the company and people, and it's a good chance to see if it's a good fit for you.

Over 4 weeks, started with a phone interview with HR, followed by hiring manager, then onsite. The first two interviews were easy and quick: covered what I want from a position, how I describe myself, and resume. The last interview was a full day onsite, with half an hour interviews back to back with all heads of the department, and one 1hr of a casual lunch interview with two process engineers I/II. I was given one break towards the end of the interview. In general, there were too many HR style questions (each interviewer came with 2 of these questions so that was a total of 20), and very few technical questions. In my opinion, the interview process was not representative of how a candidate will thrive in a process development/research/science environment: Didn't test prior knowledge/ability to reason through scientific problems/how one can work in a fast paced environment (which is what was asked of me in many of the other interviews I have with other companies). They asked me to follow up a week later, which I did, and they told me they didn't have a decision yet. They said to follow up again a week later, which I did. Only then did they have the decency to tell me someone else had filled the spot. They were professional - until the last interview step.