Altimetrik Senior Software Developer interview questions

There will be three rounds. The first one will be a pen and paper round just like a school examination followed by l2 and l3. In my case there were 3 questions. Q1. Implement a LRU caching strategy using c# Q2. Do a system design for a ride sharing system with payement and live tracking integration. design all apis high level modules and all the details. Q3. Sliding pointer DSA problem. One of the worst interview experience as you have to write all this using a pen and paper and you won't have any panel discussion, nor you can explain your thoughts or explanations to a panel. In today's world of AI, using a pen paper to write such large concepts and solutions in a given time frame seemed unfair to me.