DSM Engines interview questions

After an introductory phone call to gauge interest and fit, there were two rounds of interviews. The first was 30 min behavioral followed by 30 min case study, each with different DSM manager. Second round was 45 min behavioral with 2 senior managers, followed by 40 min case study. The second round concluded with me being given a writing prompt (essentially a short, take-home case study) which I had to complete and submit within 24 hrs.