Merck Sr Scientist interview questions

Merck visited graduate institution for on-campus interviews. Informal first-round interview with on-campus recruiter. Pleasant interview and more of a conversation. Contacted a week later for a phone-interview with R&D Director and a 2nd phone interview with another Director. Phone interviews standard: explanation of personal research, 4-5 HR questions, and explanation of job responsibilities (30 - 60 min). Phone-interviews formal, but once again very pleasant. On-site interview 4 weeks later. Day consisted of five-six 45 min in-person/teleconference interviews with different directors of R&D and VP R&D at site. Most of conversations revolved around graduate research and fairly informal discussions. Once again, great conversations and people. Interviewers made me feel comfortable and confident. 45 minute presentation of research in the middle of day. Contacted week later for follow-up questions and company explaining their interest level in me as candidate. Job offered one month later via phone call.