Ottimate Senior Software Engineer, Backend interview questions

I applied through a recruiting agency. It took about 1 week. R1: Discussion round with EM. Asked about past projects and typical day-to-day activities on the job. He also asked about my future aspirations and a few questions about team fitment. R2: DSA coding round with a senior developer. For half an hour asked about the optimization process for a theoretical application and how I'd proceed, involving caching, DB queries optimization, indexes etc. Then for the next half hour asked to implement a working solution of LFU cache from scratch with no further details. Asking LeetCode hard with less than half an hour for asking clarification questions and coding solution is insane. Also, the interviewer answered vaguely when asked clarification questions and instead questioned me, expecting me to read his mind. Thoroughly disappointed in the second round. Complete waste of time.