[antoinealb]

I did not study CompSci but microengineering (mix of things, including robotics and manufacturing) and I am now working there as a SRE. Some colleagues are mathematicians. So definitely not only CS background :)

[unishark]

So in interviews do they also test mathematicians and engineers on undergraduate courses?

[gowld]

Yes. It doesn't matter what field you were in, it matters how well you know the skills they are looking for.

[antoinealb]

Had exactly the same interviews as my colleagues from a CS background.