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Lowe's Software Engineer Interview Experience

Software Engineer

Lowe's
June 24, 2025
26 Questions
Selected

Summary

AI Powered

The Lowe's interview process consisted of three rounds, encompassing a mix of technical and managerial questions. The first round focused on Java concepts, OOP principles, and stream API applications, while the second round delved into practical queries related to Spring Boot. The final round involved discussions on technology choices, project management, and personal achievements, presenting a rigorous and thorough assessment of candidates. Overall, candidates should prepare for a challenging yet insightful interview experience at Lowe's.

1

Round 1

#1

Scenario-Based Questions on OOP

Explain the concepts of polymorphism, inheritance, the static keyword, as well as the equals and hashcode methods in Java. Provide examples where applicable.
java
oop
inheritance
Medium
#2

Concurrent Modification Exception

What is a Concurrent Modification Exception, and in what scenarios does it occur? Explain the concepts of fail-fast and fail-safe iterators.
java
concurrency
exception-handling
Medium
#3

Using Try Without Catch

Can you use a try block without an associated catch block in Java? If yes, under what circumstances?
java
exception-handling
Easy
#4

Java 8 Features

What are the key features introduced in Java 8? Briefly describe each feature and its significance.
java
java-8
features
Medium
#5

Finding Second Highest Employee Salary

How would you find the second highest employee salary using Java Streams? Provide a code snippet to illustrate your solution.
java
streams
salary-calculation
Medium
#6

Finding Duplicate Elements Using Streams

Write a function to find duplicate elements in a list using Java Streams. Include your thought process and a code example.
java
streams
duplicates
Medium
#7

Validating Parentheses

Design an algorithm to validate a string of parentheses. Provide your reasoning and a code example.
java
algorithms
parentheses-validation
Medium
#8

Multithreading Question

Describe an important multithreading concept or scenario you have encountered in your experience. (Note: Do not remember the exact question).
java
multithreading
Medium
#9

Find Third Highest Employee Salary Using SQL

Write a SQL query to find the third highest employee salary from a database. Assume that the employee table has a column for salaries.
sql
employees
salary-calculation
Medium
#10

Service Registry and API Gateway Definitions

Define the concepts of Service Registry, Service Discovery, and API Gateway in the context of microservices architecture. Discuss their roles.
microservices
architecture
service-registry
Medium
2

Round 2

#1

Spring Boot Annotations

Discuss the usage of various Spring Boot annotations such as @RequestMapping, @PathVariable, @RestController, and @Controller. How do they function in a Spring Boot application?
spring-boot
annotations
java
Medium
#2

Usage of @Component and @Bean

Explain the differences and usages of @Component and @Bean in Spring framework. Provide examples of when to use each.
spring-boot
annotations
dependency-injection
Medium
#3

Enabling HTTPS in Spring Boot

How can you configure a standalone Spring Boot application to use HTTPS with an embedded Tomcat server? Elaborate on the necessary steps and configurations.
spring-boot
https
tomcat
Medium
#4

Service Layer Logic

Given a specific scenario, write the service layer logic required for that scenario in a Spring Boot application. Explain your design choices.
spring-boot
service-layer
java
Medium
#5

OAuth 2.0 and JWT Tokens

What is OAuth 2.0, and how do JWT tokens operate within its framework? Explain their security benefits.
oauth
jwt
security
Medium
#6

Finding Repetitive Elements with Streams

Using Java Stream API, write a method to identify repetitive elements within a list. Provide a rationale for your approach.
java
streams
duplicates
Medium
#7

Overriding Equals and HashCode

Why is it important to override the equals and hashCode methods in Java? Discuss scenarios where not doing so may lead to issues.
java
overriding
object-equality
Medium
3

Round 3: Techno Managerial

#1

SQL vs NoSQL

What are the differences between SQL and NoSQL databases? Why was NoSQL chosen for your current company's tech stack?
sql
nosql
database
Medium
#2

Consistent Hashing

Explain the concept of consistent hashing. How is it implemented, and what are its advantages?
hashing
distributed-systems
Medium
#3

CAP Theorem

What is the CAP theorem? Discuss its implications in the design of distributed systems.
distributed-systems
cap-theorem
Medium
#4

Technology Stack Discussion

Discuss your current company project. What influenced the choice of your technology stack, and what alternatives were considered?
tech-stack
project-management
Medium
#5

Tools Discussion

What tools have you used such as SonarQube, Maven, Bitbucket, etc.? Discuss their roles and contributions to your current projects.
tools
devops
Medium
#6

Docker and Deployment Processes

Discuss your experience with Docker and the deployment processes involved with it. What best practices do you follow?
docker
deployment
devops
Medium
#7

Spring Security and Certificates

What is Spring Security, and how do you manage certificate trust in Spring applications?
spring-security
certificates
Medium
#8

90-Day Plan at Lowe's

How do you envision your first 90 days at Lowe's? What goals do you plan to achieve and how will you integrate into the team?
onboarding
strategy
Medium
#9

Personal Achievements

What are some personal achievements or work accomplishments you are most proud of in your current company?
achievements
career
Medium
javaspring-bootpolymorphismoopstream-apilowes
A

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