#Core Java

The interview process at Paytm consisted of four distinct rounds focused on various technical and managerial skills. Candidates faced questions on data structures, Java fundamentals, Spring framework, and project management. Overall, the difficulty level was medium, providing a comprehensive evaluation of both coding and design skills.

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.