- Company: Onebyzero
- Location: Bangalore
- Experience: 11
- Interview Date: 2026-07-07
Round 1 : DSA Round
- 1. Given an array of meeting time intervals [[start, end], ...], find the minimum number of meeting rooms required so no two meetings in the same room overlap. Example: Input: [[0,30], [5,10], [15,20]] Output: 2
- 2. Given beginWord, endWord, and a word list, find the length of the shortest transformation sequence where each step changes exactly one letter and every intermediate word must be in the list. Return 0 if no path exists. Example: begin="hit", end="cog", list=["hot","dot","dog","lot","log","cog"] Output: 4 → hit → hot → dot → dog → cog
- 3. Design an AWS platform serving a GenAI product to 20 enterprise customers across 3 regions. Calls Bedrock for inference, uses RAG backed by OpenSearch. Must meet 99.9% uptime SLA with P99 latency under 3 seconds. Cover resilience, cost governance, and observability.
Round 2 : HLD
- Q: Design a multi model routing system which can route user queries to the right model create detailed High level design. Func req: 1.user/client should be able to ask query from the system 2.system should be able to understand query and route to correct model (assumption- claude- 3-4 llm models)- n provider x models 3.execution-structured output parsing, error recovery 4.evaluation of the output 5.budget management
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