Walmart Data Scientist Interview Questions
Walmart Data Scientist interviews typically run 5 stages — Recruiter phone screen, Coding round, One-on-one interview, Presentation round, and additional technical assessment (senior ds) — and take about 2-3 weeks (candidates describe a relatively fast process), based on candidate-reported interviews on Glassdoor. Below: the exact stages, real sample questions asked, and what to prepare.
Walmart Data Scientist interview process & stages
| Stage | What happens |
|---|---|
| Recruiter phone screen | 31% of candidates report an initial phone interview |
| Coding round | SQL (medium difficulty) plus predictive-modeling questions |
| One-on-one interview | 22% of candidates report a one-on-one technical round |
| Presentation round | 13% of candidates report a presentation component |
| Additional technical assessment (Senior DS) | Senior Data Scientist candidates report an added round focused on data-specific technical assessments |
Typical timeline: 2-3 weeks (candidates describe a relatively fast process)
Source: Glassdoor: Walmart / Walmart Global Tech (Senior) Data Scientist interview reports.
Real sample Data Scientist interview questions asked at Walmart
- Write a SQL query (medium difficulty) to compute weekly active shoppers by store region.
- How would you build a demand-forecasting model for a seasonal product category?
- Explain how you'd validate a recommendation model before a full rollout to Walmart.com.
- Tell me about a time you had to simplify a predictive model for a non-technical retail stakeholder.
- How do you approach a forecasting problem when historical data is sparse for a new product line?
FAQs
How many rounds does Walmart use for Data Scientist?
Candidates report 3 initial rounds: a recruiter phone call, then a coding round covering medium-difficulty SQL and predictive modeling.
How long does the process take?
Candidates describe the process as relatively fast — about 2 weeks in some reported cases.
Is there a dedicated technical assessment for senior roles?
Yes — Senior Data Scientist (Walmart Global Tech) candidates report an added round focused on data-specific technical assessments after the recruiter screen.
Is there a presentation component?
Reported by about 13% of candidates, alongside phone and one-on-one interview stages.
What should I prepare most?
SQL fluency and predictive-modeling fundamentals — both are explicitly named by candidates as the coding-round focus.
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