I applied online. The process took 4 months. I interviewed at Atlatec in Sept 2020
Interview
Two rounds of programming challenges were presented, followed by an virtual face-to-face interview where they mostly went over your solutions to the two problems. The whole process was very slow, but their HR did a good job making you feel like you were being treated fairly by their review process.
Interview questions [1]
Question 1
Write a vector and matrix class in C++ that supports vector/matrix multiplication, addition, and scalar multiplication.