Awful. Do not recommend.
I was given a technical assessment in my first round, without even having the opportunity to talk to the company (interviews are two way streets).
The assessment was incredibly open ended in a bad way - not like an exploratory analysis, but rather there was no clear explanation of what they wanted from the assessment.
In addition, the assessment itself was poorly written, with spelling/grammar mistake that could make it easy to interpret the question in different ways.
The feedback I received afterwards didn't even relate to the assessment question. For example, I was asked to validate data to feed into a Machine Learning pipeline. Basic data sanitisation I thought. The feedback I received said that I didn't provide any insights?
If I wasn't confident in my own abilities, with a decade of experience, I would have imposter syndrome after this. However, because of my experience, I am confident in calling this out as the worst technical assessment I have ever done, with the most useless feedback I have ever received.