The interviewer asked two live coding questions. One was anagram-related (a pretty easy one), and the other was about adding two numbers in the form of strings. He gave me one question at a time without explaining his expectations. I solved both on time and described my approaches along the way. He seemed to abstain from communication, but it went great from my perspective.

Then came the Q&A session. I asked him about the job and something about the system. He said the intercommunication of the microservices uses mTLS, but he could not pronounce it correctly. I then asked, "Does intercommunication among microservices use authentication?" He replied, "Then you would need to spare another request to the auth service." I asked, "Why don't you cache the access token?"

He burst into silence, laughed, and could not explain. I knew the answer and just deviated the conversation to another non-tech topic. Afterwards, I received a rejection email from HR without any feedback.

Two live coding questions I have written in the description.