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Walmart Labs Data Engineer 3 Interview Questions and Answers

Updated 28 Apr 2024

Walmart Labs Data Engineer 3 Interview Experiences

1 interview found

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

I applied via Referral and was interviewed before Apr 2023. There were 3 interview rounds.

Round 1 - Technical 

(2 Questions)

  • Q1. Recursive CTE related SQL
  • Q2. Python program to parse JSON
  • Ans. 

    Python program to parse JSON

    • Use the json module in Python to parse JSON data

    • Use the loads() method to load JSON data into a Python dictionary

    • Access the data in the dictionary using keys

  • Answered by AI
Round 2 - Technical 

(2 Questions)

  • Q1. Advanced SQL on JOINs and Windowing
  • Q2. Spark Optimization on JOIN queries
  • Ans. 

    Optimizing JOIN queries in Spark involves partitioning data, using broadcast joins, and optimizing shuffle operations.

    • Partition data to avoid shuffling unnecessary data across the network

    • Use broadcast joins for small tables that can fit in memory of each executor

    • Optimize shuffle operations by tuning shuffle partitions and memory settings

  • Answered by AI
Round 3 - Case Study 

No case study was asked. HM asked about my experience and project details.

Interview Preparation Tips

Interview preparation tips for other job seekers - Focus on DSA (Easy to medium) and advanced SQL and Spark optimization techniques.

Skills evaluated in this interview

Interview questions from similar companies

I applied via Company Website and was interviewed in Feb 2021. There was 1 interview round.

Interview Questionnaire 

2 Questions

  • Q1. Coding
  • Q2. Java C

Interview Preparation Tips

Interview preparation tips for other job seekers - Basics

I applied via Campus Placement and was interviewed before Oct 2020. There were 3 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Training with job facilities are available..?
  • Q2. Cab facilities are available..?

Interview Preparation Tips

Interview preparation tips for other job seekers - This interview was a technical one but was majorly a stress test. The interviewer wanted to test both my knowledge and communication skills.most of the questions asked to me were related to my mba curriculum i.e. statistics and computers related topics. Luckily i was able to answers most of the questions correctly. I tried to answer each question with examples and also used props on the table.to explain my theories. I think that's my best fit for the position..

I applied via Naukri.com and was interviewed in Nov 2020. There were 4 interview rounds.

Interview Questionnaire 

2 Questions

  • Q1. Basic questions
  • Q2. Differences and advantages of your topic

Interview Preparation Tips

Interview preparation tips for other job seekers - Always clear your basic knowledge of your topic or language and give the best what ever you know.My suggestion is that do not tell anything if you don't know.

I applied via Naukri.com and was interviewed in Nov 2020. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. Basic question on testing, selenium, java, sql, agile, topics from resume

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare with whatever written in resume

I applied via Company Website and was interviewed before Mar 2021. There were 3 interview rounds.

Round 1 - Aptitude Test 

The Questions in the aptitude test were Average but you need to be pretty quick to solve them sp yes speed matters in aptitude test

Round 2 - Coding Test 

After aptitude there was a coding test which was not necessary to clear for ASE profile but if you clear it then you will be considered for SE profile. its better to give your all out in the coding test to gain a better career level at accenture

Round 3 - Technical 

(4 Questions)

  • Q1. After clearing above 2 rounds there was technical and HR round both combined(In my case) so they basically ask the questions related to what you've written in your resume, make sure to not write anything w...
  • Q2. Question 1. Tell me about your project and what all challenges did you faced
  • Q3. Describe yourself in minimum possible words
  • Q4. Technical questions related to technologies you've written in your resume.

Interview Preparation Tips

Interview preparation tips for other job seekers - My final Advice for the job seekers would be keep grinding don't get nervous and stay confident on your answers even if you know very little.
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Indeed and was interviewed before Jan 2022. There were 3 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 Resume tips
Round 2 - Aptitude Test 

Objective type,Logical reasoning,Basic programming Skills

Round 3 - HR 

(2 Questions)

  • Q1. Explain about the Job Role in previous company
  • Q2. Notice period at current company

Interview Preparation Tips

Interview preparation tips for other job seekers - Be confident.Project your skills and achievements in previous companies

I applied via Recruitment Consultant and was interviewed in Jan 2021. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Basic javascript and nodejs questions

Interview Preparation Tips

Interview preparation tips for other job seekers - Keep your basics clear

Interview Questionnaire 

1 Question

  • Q1. Worst experience. Even after attending the interview I got reply as, As per our record you have not attended the interview kindly contact to reschedule the interview.

Software Engineer Interview Questions & Answers

Adobe user image Devendra Bendkhale

posted on 4 Dec 2015

Interview Questionnaire 

8 Questions

  • Q1. WRITE A GENERIC SWAP FUNCTION
  • Ans. 

    A generic swap function swaps two values of any data type.

    • The function should take two parameters of any data type.

    • Use a temporary variable to store the value of one parameter.

    • Assign the value of the second parameter to the first parameter.

    • Assign the value of the temporary variable to the second parameter.

  • Answered by AI
  • Q2. SEARCH AN ELEMENT IN ROTATED SORTED LINKLIST .
  • Ans. 

    Search for an element in a rotated sorted linked list.

    • Find the pivot point where the list is rotated.

    • Divide the list into two sublists based on the pivot point.

    • Perform binary search on the appropriate sublist.

    • Handle edge cases such as empty list and list with only one element.

  • Answered by AI
  • Q3. SEARCH AN ELEMENT IN ROTATED SORTED ARRAY. WRITED A CODE FOR IT
  • Ans. 

    Search an element in a rotated sorted array

    • Find the pivot point where the array is rotated

    • Divide the array into two sub-arrays based on pivot point

    • Perform binary search on the appropriate sub-array

    • Repeat until element is found or sub-array size is 1

  • Answered by AI
  • Q4. In an Array of size 95 contain numbers in range 1 to 100. each number is at max once in the array. find the 5 missing numbers in array between 1-100
  • Ans. 

    Find 5 missing numbers in an array of size 95 containing numbers in range 1 to 100.

    • Create a boolean array of size 100 and mark the present numbers

    • Iterate through the boolean array and find the missing numbers

    • Alternatively, use a HashSet to store the present numbers and find the missing ones

  • Answered by AI
  • Q5. Given sudoku as id array of size . in a given empty cell find the possible numbers that could be possible. Asked me to write code for it
  • Ans. 

    Given a Sudoku board, find possible numbers for an empty cell.

    • Iterate through empty cells and check possible numbers using row, column, and box constraints.

    • Use a set to keep track of possible numbers for each empty cell.

    • Return the set of possible numbers for the given empty cell.

  • Answered by AI
  • Q6. Given 4 unsigned integers find their integer average (eg. (2,2,2,3) => (2+2+2+3)/4 = 2) consider integer division ) without typecasting
  • Ans. 

    Find integer average of 4 unsigned integers without typecasting

    • Add all the integers and divide by 4

    • Use bit shifting to divide by 4

    • Handle overflow by using long long data type

    • Use unsigned int data type for input

  • Answered by AI
  • Q7. Write a code to identify wheter given processor is of 32 bit architecture or 64 bit architecture
  • Ans. 

    Code to identify 32 bit or 64 bit architecture of a processor

    • Check if the operating system is 32 bit or 64 bit

    • If OS is 32 bit, processor is 32 bit

    • If OS is 64 bit, check if processor supports 64 bit architecture

    • Use CPUID instruction to check if processor supports 64 bit architecture

  • Answered by AI
  • Q8. Convert a binary number into base 64 integer
  • Ans. 

    Convert binary number to base 64 integer

    • Divide the binary number into groups of 6 bits

    • Convert each group of 6 bits to decimal

    • Map the decimal value to the corresponding base 64 character

    • Concatenate the base 64 characters to form the final integer

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: SIMPLE CODING QUESTIONS SPEED MATTERS.
Duration: 60 minutes
Total Questions: 3

Skills: Analytics And Coding
College Name: IIT Guwahati

Skills evaluated in this interview

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Walmart Labs Interview FAQs

How many rounds are there in Walmart Labs Data Engineer 3 interview?
Walmart Labs interview process usually has 3 rounds. The most common rounds in the Walmart Labs interview process are Technical and Case Study.
How to prepare for Walmart Labs Data Engineer 3 interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Walmart Labs. The most common topics and skills that interviewers at Walmart Labs expect are Analytical, Analytics, Data Management, Data Quality and GCP.
What are the top questions asked in Walmart Labs Data Engineer 3 interview?

Some of the top questions asked at the Walmart Labs Data Engineer 3 interview -

  1. Spark Optimization on JOIN quer...read more
  2. Python program to parse J...read more
  3. Advanced SQL on JOINs and Window...read more

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Walmart Labs Data Engineer 3 Interview Process

based on 1 interview

Interview experience

4
  
Good
View more

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Walmart Labs Data Engineer 3 Salary
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₹19.1 L/yr - ₹37 L/yr
6% less than the average Data Engineer 3 Salary in India
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