Review tech stack and best practices
Company: Fidelity
Role: Software Engineer
Category: System Design
Difficulty: medium
Interview Round: Take-home Project
##### Question
What is your current tech stack and its versions? What are the new features introduced in Java 8? What is the difference between Spring and Spring Boot? What key features does Angular offer? How would you use MapReduce effectively? How do you solve concurrency issues in Java? What are SQL constraints and how do they work? How do you write a good test and identify a bad one? What constitutes an effective integration test?
Quick Answer: This question evaluates familiarity with technology stacks and software engineering fundamentals — covering language feature knowledge, framework distinctions, distributed data-processing patterns, concurrency control, database constraints, and testing quality.