Java, Spring & Kafka Fundamentals Deep-Dive

Company: Wells Fargo

Role: Software Engineer

Category: Software Engineering Fundamentals

Difficulty: medium

Interview Round: Technical Screen

Quick Answer: This question tests depth of knowledge across core Java, Spring Boot, and Kafka fundamentals commonly required for senior backend engineering roles. It evaluates practical understanding of object-oriented design principles, distributed messaging semantics, and Spring Security internals — assessing whether candidates can reason about trade-offs rather than recite definitions.