Complete radio silence after on-site interviews.

I went through the whole interview process, including one full day of technical interviews, back to back.

They simply stopped replying to any sort of communication: no reply to my emails, and they wouldn't accept my phone calls.

I was gobsmacked by the staggering level of unprofessionalism. Who would want to work at a place like that?

This was at the Amsterdam branch, formerly known as Scyfer.

Explain the guts of Shor's quantum factoring algorithm. (This sort of came up naturally, so we figured we'd discuss it together.)

Find the primitive (and derive) of log(x).

Given a bag of n blue and m red marbles, what's the expected number of draws until you get a blue marble?

Programming on whiteboard: Efficiently compute the inner product of two sparse vectors.

Programming on whiteboard: Implement a regex parser.

ML product architecture: How would you implement a computer vision ML product?