The process took 17 weeks.

I had two technical phone interviews, four technical on-site interviews in Warsaw, Poland, and a phone call for salary discussion. Everything was settled, including phone calls with my referees.

In my last update, I was informed that the offer was pending VP approval. They suddenly changed their mind and decided to move forward with another candidate (after tough discussions, they said).

I have listed my overall experience and thoughts below:

• The process took too long.
• They were not informative unless I asked for something.
• All the people I met were very kind and nice.
• I was disappointed after settling on even small details.

• An assembly question about a SIMD architecture that I cannot remember exactly.

• Given an array of points (x and y coordinates), implement a data structure (a heap) for insertion and deletion of the n nearest ones.

• Implement a CUDA kernel that computes the frequencies of numbers given in an array.

• Given a very large file containing integers, implement an algorithm that outputs a sorted version (also do space and time complexity analysis).

• Implement an optimized CUDA kernel for matrix transpose (also had discussions about GPU architecture).

• Present a system you designed and implemented, and explain the changes for desired features asked during the conversation.

• Various questions about deep learning, such as explanation of optimization algorithms, the difference between gradient descent and stochastic gradient descent, underfitting, overfitting, gradient clipping, and many more.