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Walmart Data Engineer Interview Questions and Answers

Updated 9 Oct 2024

Walmart Data Engineer Interview Experiences

8 interviews found

Interview experience
4
Good
Difficulty level
Hard
Process Duration
2-4 weeks
Result
Selected Selected

I applied via LinkedIn and was interviewed in Sep 2024. There were 2 interview rounds.

Round 1 - Technical 

(2 Questions)

  • Q1. Data Structures
  • Q2. Algorithms concepts
Round 2 - One-on-one 

(2 Questions)

  • Q1. Data Engineering Concepts
  • Q2. Spark and pyspark

Data Engineer Interview Questions & Answers

user image Ankita Gulati

posted on 4 Oct 2024

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Based on python and sql

Round 2 - Technical 

(2 Questions)

  • Q1. Related to spark
  • Q2. Dimensional Modelling

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Data Engineer Interview Questions & Answers

user image Anonymous

posted on 14 Jul 2024

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Approached by Company and was interviewed in Jun 2024. There was 1 interview round.

Round 1 - Technical 

(1 Question)

  • Q1. Static allocation in spark. 10TB of file needs to be processed in spark, what configuration (executors and cores) would you choose and why?
  • Ans. 

    For processing 10TB of file in Spark, consider allocating multiple executors with sufficient cores to maximize parallel processing.

    • Allocate multiple executors to handle the large file size efficiently

    • Determine the optimal number of cores per executor based on the available resources and workload

    • Consider the memory requirements for each executor to avoid out-of-memory errors

    • Adjust the configuration based on the specific

  • Answered by AI

Skills evaluated in this interview

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 19 Mar 2024

Interview experience
4
Good
Difficulty level
-
Process Duration
2-4 weeks
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Spark architecture
  • Q2. Sql code medium level

Walmart interview questions for designations

 Senior Data Engineer

 (4)

 Data Engineer 1

 (1)

 Data Engineer 2

 (1)

 Data Engineer 3

 (1)

 Data Scientist

 (8)

 Data Analyst

 (4)

 Senior Data Analyst

 (6)

 Senior Data Scientist

 (1)

I applied via Approached by Company and was interviewed in Jun 2022. There were 2 interview rounds.

Round 1 - One-on-one 

(2 Questions)

  • Q1. Round 1 was with manager, he asked questions about current project and some questions based on spark.
  • Q2. Lazy Evaluation, configuration for running a spark jobs
Round 2 - Technical 

(2 Questions)

  • Q1. This is where the nightmare started, 1 scenario based coding questions and 3 sql questions were asked. The questions were of hacker rank level, its not that I couldn't solve those but for a guy who have wo...
  • Q2. 1. Design and code a scheduler for allocating meeting rooms for the given input of room counts and timestamps: Input : No of rooms : 2 Time and dutation: 12pm 30 min Output: yes. Everytime th...
  • Ans. 

    Design and code a scheduler for allocating meeting rooms based on input of room counts and timestamps.

    • Create a table with columns for room number, start time, and end time

    • Use SQL queries to check for available slots and allocate rooms

    • Consider edge cases such as overlapping meetings and room availability

    • Use a loop to continuously check for available slots and allocate rooms

    • Implement error handling for invalid input

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - be prepared outside the job role. Too much expectations for experienced employees in coding

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 26 Jan 2023

Interview experience
4
Good
Difficulty level
Hard
Process Duration
4-6 weeks
Result
Selected Selected

I applied via Approached by Company and was interviewed before Jan 2022. There were 4 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Technical 

(2 Questions)

  • Q1. Mostly SQL advanced questions
  • Q2. Few Programming questions on Python
Round 3 - Technical 

(1 Question)

  • Q1. SQL, Python and Azure Questions
Round 4 - HR 

(1 Question)

  • Q1. Compensation and benefits

Interview Preparation Tips

Interview preparation tips for other job seekers - For Data engineering, SQL is the most important skill that one need to have. Would advice honing that skill mostly.

Data Engineer Jobs at Walmart

View all

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 11 Feb 2024

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
Selected Selected

I applied via Recruitment Consulltant and was interviewed before Feb 2023. There was 1 interview round.

Round 1 - Coding Test 

SQL, Spark, Hive, Python

Interview Preparation Tips

Interview preparation tips for other job seekers - Mostly SQL Question which include complex joins including two or more tables, job optimisation in scala/spark.

Data Engineer Interview Questions & Answers

user image Anonymous

posted on 11 May 2021

Interview Questionnaire 

2 Questions

  • Q1. Enhance your theoritical knowledge.
  • Q2. Coding skills using collections
  • Ans. 

    Collections are essential for efficient data manipulation in Python. A strong grasp of collections is crucial for a data engineer.

    • Familiarity with lists, tuples, sets, and dictionaries

    • Understanding of when to use each collection type

    • Ability to manipulate and iterate through collections

    • Knowledge of built-in collection methods and functions

    • Experience with third-party collection libraries like NumPy and Pandas

  • Answered by AI

Skills evaluated in this interview

Interview questions from similar companies

I was interviewed before Jun 2021.

Round 1 - Coding Test 

(2 Questions)

Round duration - 180 minutes
Round difficulty - Easy

It was an mcq + coding round. There were aptitude and ouput based question in mcq. And coding questions were easy

  • Q1. 

    Find the Duplicate Number Problem Statement

    Given an integer array 'ARR' of size 'N' containing numbers from 0 to (N - 2). Each number appears at least once, and there is one number that appears twice. Yo...

  • Ans. 

    Find the duplicate number in an array of integers from 0 to (N-2).

    • Iterate through the array and keep track of the frequency of each number using a hashmap.

    • Return the number with a frequency greater than 1 as the duplicate number.

    • Time complexity can be optimized to O(N) using Floyd's Tortoise and Hare algorithm.

  • Answered by AI
  • Q2. 

    Reverse String Operations Problem Statement

    You are provided with a string S and an array of integers A of size M. Your task is to perform M operations on the string as specified by the indices in array A...

  • Ans. 

    Given a string and an array of indices, reverse substrings based on the indices to obtain the final string.

    • Iterate through the array of indices and reverse the substrings accordingly

    • Ensure the range specified by each index is non-empty

    • Return the final string after all operations are completed

  • Answered by AI
Round 2 - Video Call 

Round duration - 60 Minutes
Round difficulty - Easy

It was technical + hr round. there were 2 people as interviewer. They stated from intro and asked some basic puzzles and hr questions. After that they asked about my projects, technologies and some ds algo and dbms questions.

Interview Preparation Tips

Eligibility criterianaAccenture interview preparation:Topics to prepare for the interview - Data Structures, Pointers, OOPS, System Design, Algorithms, Dynamic ProgrammingTime required to prepare for the interview - 6 MonthsInterview preparation tips for other job seekers

Tip 1 : Practice aptitude
Tip 2 : Focus on practicing coding
Tip 3 : Learn from mistakes

Application resume tips for other job seekers

Tip 1 : Mention some projects that you have done
Tip 2 : Try to have skills that are required for the role

Final outcome of the interviewSelected

Skills evaluated in this interview

Interview Questionnaire 

6 Questions

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