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Walmart

Senior Software Engineer

Thread safety and immutability in system design

Medium

Round 5 (Low Level Design)general_knowledgeCandidate Selected

Thread Safety Immutability Low Level Design

Ensure thread safety and immutability in your design.

This question was asked in

Walmart Senior Software Engineer Interview Experience

The interview process at Walmart consisted of five comprehensive technical rounds covering a broad range of topics. Across the rounds, the candidate was evaluated on Core Java & Concurrency, Spring Boot internal mechanics, Microservices architecture and DevOps practices, SQL queries and indexing, and Low-Level System Design (LLD). Overall, the process was thorough with a medium-to-hard difficulty level, heavily focusing on deep technical understanding, concurrency, and SOLID principles.