Recruiter invited me to apply for a role and do an Online Technical Screen and said I could use any language I like. The questions were straightforward and I completed them in Python easily and included the description of the thought process. I soon got a rejection -- asked why and the feedback was they don't want built-in methods (which was not mentioned in the question) and the array was not initialized (it was -- and it ran fine when I tested locally). My guess is the grader was reviewing the answers with a mindset from C/C++/Java and my Python solutions got penalized under their mindset. As someone who passed multiple rounds of Facebook/Airbnb whiteboard algorithm grilling, I have to say this feels kinda absurd.