Korg Berlin did have a man with the title of “applied physics engineer” on staff for a while, but he has moved on, or changed titles, as i can’t find him on staff now. That was unusual enough that i made note of it in this post.
The other thing that was unusual was the research they were doing on plastics, and the stress they are making on sustainable development, also noted in that post.
ADDED : The staff has definitely changed, i think the physics guy might have been older, i noticed an older engineer, and he is gone. BTW in development, it is quite common for experts to be brought in for short term contract assignments, this is not a sign of instability. They also have a mechanical engineer, and typically they would be there for mechanical parts, as opposed to assembly issues.