Walmart Labs Machine Learning Engineer Interview Questions
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Walmart Labs
Easy
Machine Learning Engineer LockedFind first non-repeating character
Given a string s, return the first character that appears exactly once in the string (i.e., the leftmost non-repeating character). - If no such charac...
Coding & Algorithms
0
0
Dec 7, 2025
Walmart Labs
Easy
Machine Learning Engineer LockedDesign an item category prediction system
Design an end-to-end ML system that predicts an item’s category/type (multi-class or hierarchical classification), e.g., assigning an e-commerce listi...
ML System Design
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0
Dec 7, 2025
Walmart Labs
Easy
Machine Learning Engineer LockedDesign an LLM agent with RAG and tools
You’re asked to describe how you would build an LLM-based agent that can converse with a user (e.g., an interviewer) and answer questions using an int...
Machine Learning
0
0
Dec 7, 2025