Mars Chemist interview questions

The interview included two skype interviews (one with an external recruiter) with behavioral questions and basics of my CV. After, I had a six hour interview at the factory/lab facility. That visit included a 15 min presentation that I had to prepare with 15 minutes for questions, a technical case study (5 min brief, 30 min prep, 45 min presentation/QA), lunch, two separate interviews, and a tour.