Walmart is a multinational retail company that owns a chain of hypermarkets, discount department stores, and grocery stores and is known for its focus on low prices and everyday essentials. It was founded in 1962 by Sam Walton and is headquartered in Bentonville, Arkansas. Walmart is not only the world's largest retailer by revenue but also the world's largest private employer with over 2.3 million employees. Walmart has been ranked first in the Fortune 500 list of the largest corporations in the United States by total revenue since 2014 and has been investing heavily in e-commerce in recent years becoming the largest online retailer in the United States.

Landing a job at Walmart can be a dream come true for many tech professionals. Walmart offers a dynamic and challenging work environment where you can make a real impact with its focus on innovation and cutting-edge technology. But before you can celebrate, you'll need to ace the technical interview. To help you prepare, we've compiled a list of the most commonly asked technical interview questions from Walmart's recent Interview Experience, backlinks with their solution articles, and practice pages.

Recruitment Process

To know more about Walmart Recruitment Process please check out this Walmart Labs Recruitment Process

DSA Problems

Walmart uses computer tricks (Data Structures and Algorithms) to organize stuff, manage products, and deliver things faster. These tricks also help them understand what customers like and make shopping online easier. It's like smart tools that make Walmart work better and save money.

System Design

System design interviews are a crucial part of the technical interview process at Walmart. These questions evaluate your ability to create scalable, efficient, and robust systems that can handle Walmart's extensive operations. Here are some common system design questions you might encounter:

• Design an E-commerce Platform
• Design a Warehouse Management System
• Design a Real-time Inventory Tracking System
• Design a Recommendation System
• Design a Load Balancer

Core Subjects

DBMS

Database Management System is a software or technology used to manage data from a database.

• Explain the ACID properties of transactions.
• Compare and contrast different types of joins (inner, outer, left, right).
• How do you optimize a slow-running query?
• Explain the difference between Indexing and Hashing for indexing.
• What are the different types of normalization (1NF, 2NF, 3NF)?
• Explain the concept of concurrency control in DBMS.
• How do you handle data redundancy in a database?
• Describe the use of views in a database.
• Explain the difference between OLTP and OLAP databases.
• What are some best practices for database security?

Operating System

Operating System lies in the category of system software. It basically manages all the resources of the computer.

• What is scheduling and its types?
• What's the Difference Between Paging and Segmentation
• What is a deadlock in OS?
• What is file system and its types in OS?
• What is Concurrency in Operating System ?
• What are the different types of virtualization?
• Discuss techniques Operating Systems Employ for Security and Protection?
• What are the various types of Linux Commands?
• What's the difference between mutex and semaphore?
• What are the various Types of System Calls in OS?

OOPS

Object-oriented programming aims to implement real-world entities like inheritance, hiding, polymorphism, etc. in programming.

• Explain the difference between Inheritance and Polymorphism.
• What are the different types of Inheritance? Explain each with an example.
• What is Encapsulation? How does it benefit OOP design?
• What is Abstraction? How is it achieved in OOP?
• What are the different types of Polymorphism? Explain each with an example.
• Explain the concept of Method Overriding with an example.
• What is the difference between Public, Private, and Protected access modifiers?
• Explain the concept of Interfaces and how they are used in OOP.
• What are the advantages and disadvantages of using Abstract classes?
• Explain the concept of Static methods and variables in OOP.

Computer Network

Computer network is a system that connects numerous independent computers in order to share information (data) and resources

• What's the difference between IPv4 and IPv6?
• Explain various types of network topologies?
• What is OSI layers in computer?
• Explain the difference between TCP and UDP protocols.
• What are the three-way handshake in TCP?
• How does routing work in a network? Explain the different types of routing protocols.
• What is Domain Name System(DNS)?
• What is DHCP?
• Explain the concept of subnetting and its benefits for network administration.
• What are firewalls and how do they protect networks from unauthorized access?
• Explain the concept of load balancing .

Tips for Answering Walmart Interview Questions

• Research the Company: Understand Walmart’s values, culture, and business model. This will help you tailor your answers to align with the company’s expectations.
• Use the STAR Method: Structure your answers using the Situation, Task, Action, Result (STAR) method to provide clear and concise responses.
• Practice Common Questions: Prepare all the previously asked DSA questions
• Showcase Your Skills: Highlight your relevant skills and experiences that make you a strong fit for the role.
• Ask Questions: Prepare thoughtful questions to ask the interviewer about the role, team, and company to demonstrate your interest and enthusiasm.

Walmart Interview Experience

• Walmart Interview Experience for SDE
• Walmart Interview Experience For Software Development Engineer (Off-Campus) 2024
• Walmart Interview Experience for SDE
• Walmart CodeHers Interview Experience
• Walmart Interview Experience for SDE-2
• more

Walmart Interview Questions FAQ

What types of interview questions can I expect at Walmart?

At Walmart, you can expect a mix of behavioral, situational, and job-specific questions. Common topics include customer service scenarios, teamwork experiences, and your ability to handle challenges in a retail environment.

How can I demonstrate my problem-solving skills during the interview?

You can demonstrate your problem-solving skills by sharing specific examples of challenges you have faced in previous roles. Explain the situation, the steps you took to address it, and the positive outcome that resulted from your actions.

What are some common mistakes to avoid during a Walmart interview?

Common mistakes to avoid include being unprepared, speaking negatively about previous employers, failing to provide specific examples, and not asking questions at the end of the interview. Being aware of these pitfalls can help you present yourself more favorably.

What role does company culture play in the interview process?

Company culture is significant at Walmart, as they seek candidates who align with their values and mission. During the interview, express your understanding of Walmart's commitment to customer service, community involvement, and respect for individuals.