AmbitionBox
Interview Questions
- Reviews
- Salaries
- Interview Questions
- About Company
- Benefits
- Jobs
- Office Photos
- Community
Add office photos
Filter interviews by
Walmart Senior Data Scientist Interview Questions and Answers
Walmart Senior Data Scientist Interview Experiences
1 interview found
Anonymous
I applied via LinkedIn and was interviewed in Mar 2024. There was 1 interview round.
(3 Questions)
- Q1. What is bias and variance how regularization helps in reducing overfitting
- Ans.
Bias is error due to overly simplistic assumptions, variance is error due to sensitivity to fluctuations. Regularization helps by penalizing complex models.
Bias is error from erroneous assumptions in the learning algorithm. Variance is error from sensitivity to fluctuations in the training set.
High bias can cause underfitting, where the model is too simple to capture the underlying structure. High variance can cause ov...
- Q2. Random Forest XGBoost pros and cons, hyperparameters. Data imputation methods
- Q3. Difference between RNN and LSTM, advantage and limitations.
- Ans.
RNN is a type of neural network that processes sequential data, while LSTM is a type of RNN that addresses vanishing gradient problem.
RNN is a type of neural network that can process sequential data by maintaining a hidden state.
LSTM (Long Short-Term Memory) is a type of RNN that addresses the vanishing gradient problem by introducing memory cells and gates.
LSTM is capable of learning long-term dependencies in data, ma...
Interview Preparation Tips
Skills evaluated in this interview
Interview questions from similar companies
Abhishek Singh
I applied via Other and was interviewed before Nov 2020. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. Programming question on Java
Interview Preparation Tips
I applied via Naukri.com and was interviewed in Oct 2020. There was 1 interview round.
Interview Questionnaire
3 Questions
- Q1. Online Aptitude Test
- Q2. Questions from my resume/previous employment
- Q3. Scenario based question/Business case study
Interview Preparation Tips
Q: There are a couple of reliance stores that are bleeding(doing really bad) in one region. You have all the necessary data related to these stores. What would be those factors that you will consider first ? What will you do to ensure these stores do well.
Since I had retail background it was easier for me to understand the scenario based question. The interviewer wanted to understand how I would approach the problem.
Last, I had few questions to the interviewer based on the role.
On the same day I received call from HR saying that I have cleared the interview and offered the role.
Selected
I applied via Approached by Company and was interviewed before Oct 2023. There were 2 interview rounds.
(2 Questions)
- Q1. 2 DS questions, 1 SQL question
- Q2. Details of projects worked, containerization, APIs
- Ans.
I have worked on multiple projects involving containerization and developing APIs.
Developed microservices using Docker containers for easy deployment and scalability
Created RESTful APIs using Node.js and Express framework
Integrated third-party APIs for data retrieval and processing
Utilized Kubernetes for container orchestration and management
(2 Questions)
- Q1. Python - ML/DS pipeline
- Q2. Java- Springboot framework
Skills evaluated in this interview
What people are saying about Walmart
Selected
I applied via Naukri.com and was interviewed in Feb 2024. There were 4 interview rounds.
(2 Questions)
- Q1. Its a normal questions which usually service based company asked
- Q2. Overall it is good
Ask you to implement any solution like caching using LRU or LFU
Its a manager round where they discuss about u=your past experiences and also they tell you about the project
(2 Questions)
- Q1. I think they gave you only based on your previous offer.
- Q2. Negotiate well with them . Don't accept just for the sake of an offer because further they will not change it until/ unless it is filling position.
What are the roles & responsibilities of a Senior Data Scientist at Walmart?
Read full roles & responsibilities 
Selected
I applied via Naukri.com and was interviewed before Mar 2023. There were 2 interview rounds.
(1 Question)
- Q1. About what are you working on and your current role.
(1 Question)
- Q1. Technical skills
Walmart HR Interview Questions
(1 Question)
- Q1. Questions about Garbage Collector, Internal Hash map workflow, Functional interface
Sai Praveen Reddy Allam
I applied via Recruitment Consulltant and was interviewed in Aug 2023. There were 3 interview rounds.
Pandas, python, SQL based questions
(1 Question)
- Q1. Pandas, python, sql, business case study and logical reasoning
I applied via Naukri.com and was interviewed in Dec 2022. There were 3 interview rounds.
(2 Questions)
- Q1. Basic fundamentals of React, JS, HTML and CSS
- Q2. Virtual DOM closure Hoisting spread and rest
(2 Questions)
- Q1. Sprint groom, Maximum story points in sprint, what is the role of scrum master, refresh token, Synthetic events, webpack, reduction, redux saga vs thunk, what pattern thunk follows, hooks
- Ans.
Answering questions related to sprint grooming, Scrum Master role, refresh tokens, Synthetic events, webpack, redux saga vs thunk, and hooks for Senior Software Engineer position.
Sprint grooming involves prioritizing and estimating user stories for the upcoming sprint.
Scrum Master facilitates the Scrum process and ensures the team follows the Agile principles.
Refresh tokens are used to obtain new access tokens after th...
- Q2. Swagger vs postman
Interview Preparation Tips
Skills evaluated in this interview
Selected
I applied via Recruitment Consulltant and was interviewed before Jul 2023. There were 3 interview rounds.
Medium SQL, Statistics ,Guesstimate round
Supply and demand price increase, decrease related case study
Domain knowledge and SQL
Interview Preparation Tips
Walmart Interview FAQs
Some of the top questions asked at the Walmart Senior Data Scientist interview -
Tell us how to improve this page.
Walmart Interviews By Designations
- Walmart Software Engineer III Interview Questions
- Walmart Senior Software Engineer Interview Questions
- Walmart Software Engineer Interview Questions
- Walmart Software Developer Interview Questions
- Walmart Data Engineer Interview Questions
- Walmart Data Scientist Interview Questions
- Walmart Associate Interview Questions
- Walmart Senior Engineering Manager Interview Questions
- Show more
Interview Questions for Popular Designations
- Senior Software Engineer Interview Questions
- Data Analyst Interview Questions
- Senior Associate Interview Questions
- Senior Consultant Interview Questions
- Senior Analyst Interview Questions
- Data Scientist Interview Questions
- Senior Data Analyst Interview Questions
- Decision Scientist Interview Questions
- Show more
Overall Interview Experience Rating
based on 1 interview experience
Difficulty level
Duration
Interview Questions from Similar Companies
Walmart Senior Data Scientist Reviews and Ratings
based on 4 reviews
Rating in categories
|
Software Engineer III
2.1k
salaries
|  ₹23 L/yr - ₹40.6 L/yr |
|
Senior Software Engineer
1.8k
salaries
| ₹34.1 L/yr - ₹60 L/yr |
|
Software Engineer
964
salaries
| ₹20.5 L/yr - ₹36 L/yr |
|
Software Developer
495
salaries
| ₹18.5 L/yr - ₹37.6 L/yr |
|
Software Development Engineer 3
409
salaries
| ₹25 L/yr - ₹40 L/yr |
Amazon
Reliance Retail
DMart
Reliance Digital
- Home >
- Interviews >
- Walmart Interview Questions
