The hiring manager had not even decided if the employee would be working with Python or Java. At least this much should be known in advance. It cannot be both and it cannot be undecided, except if it is left to the new hire. The interview strongly felt like a corporate intelligence-gathering exercise. The hiring manager discussed intricate details of a tokenization procedure. I felt taken advantage of. After the initial call, I withdrew my application. Their tech stack is Java, Python, Spark, and AWS.