Met at the door by one of of the hiring manager. Talked with him in his office. Then brought to see the other hiring manager. After that, talked with several engineers about some technical issues. Had lunch with one of the employee. After that, talked with HR and other technical guys.

2021 interview for senior optical engineering, good experience, there was first a research presentation for an hour with Q&A. After that there were several in person follow ups, technical and behavioral.