Fidelity Investments

Role: Lead Engineering

College: Not Specified

Interview Date: 2023-07-26

Interview Type: Full-Time

Result: Not Specified

Difficulty: Not Specified

Rounds: 4 rounds

Topics Asked: Java concepts, Java Collections framework, Java 8 features, Spring framework, Project experience, Cloud technologies, Data Structures and Algorithms.

Experience:

The interview process consisted of four rounds: Tech Round 1, Tech Round 2, Manager round, and an HR Round.

Round 1: Tech Round 1
This round focused on fundamental Java concepts, including polymorphism, inheritance, and association, with an emphasis on real-life application scenarios. Discussions also covered the Java Collections framework, exploring different implementations of List, Set, and Map interfaces, and identifying suitable collections for specific use cases with real-time examples. A coding question was given, which involved finding the closest pair of elements with a sum closest to a given target.

Round 2: Tech Round 2
The second technical round began with discussions on Java 8 features such as lambdas, streams, and functional interfaces. The interviewer then shifted focus to the Spring framework, specifically filters and their implementation, and the bean lifecycle in Spring. The factory method design pattern and its implementation using Spring annotations were also discussed. Additionally, the candidate was asked the famous Trapping Rain Water problem.

Round 3: Manager Round
This round involved discussing the candidate's project experience and other managerial-related matters. Questions were asked about the candidate's role in previous projects, unique contributions, and implemented new features and technologies. The interviewer also inquired about creating a distributed cache for a project and experiences with cloud technologies.

Round 4: HR Round
The final round was an HR round, covering experience, expectations, and other HR-related matters.