Company interview guide
Walmart Global Tech interview process and practice questions
Walmart Global Tech builds the software behind Walmart's stores, e-commerce, supply chain and payments, with tech teams in the US, India (including Bengaluru and Chennai) and elsewhere. Candidates commonly report an online coding test, two or three technical interviews on data structures, design and past projects, and a hiring manager round. Walmart publishes four values, starting with Respect the Individual.
As candidates commonly report it; it varies by team, level and year. Last reviewed 18 October 2026.
The interview process
- 1Online coding assessment for many campus and early-career roles
- 2Technical interviews, often two or three: data structures, problem solving and your projects
- 3System design interview for experienced roles
- 4Hiring manager interview on past work, ownership and teamwork
- 5HR discussion and offer
What interviewers listen for
- Respect the Individual
- Act with Integrity
- Serve Our Customers and Members
- Strive for Excellence
- Building for very large scale: many stores, orders and shoppers at once
- Explaining trade-offs clearly
Behavioral questions
Tell me about a time you listened to an idea from someone junior or outside your team, and it changed your work.
A good answer covers
- Who suggested it and why it was easy to overlook
- How you tested the idea
- What changed, and how you credited them
Tell me about a time you had to be honest about a mistake or a delay, even though it was uncomfortable.
A good answer covers
- What went wrong and who it affected
- When and how you told them
- What you did to fix it and to rebuild trust
Tell me about a time you moved quickly but still paid close attention to detail.
A good answer covers
- Why speed mattered
- The details you checked and how
- The result and any problem you caught early
Tell me about a time you used data to work out what a customer really needed.
A good answer covers
- The question and the data you used
- What surprised you
- The decision it led to and the result for customers
Role and technical questions
How would you design a system that shows each store's stock online in near real time?
A good answer covers
- Stock events from tills, deliveries and returns flowing into one service
- Caching for fast reads, and how fresh the numbers need to be
- Showing 'low stock' safely when data lags, so shoppers aren't let down
How would you design a service that picks the best store or warehouse to fulfil an online order?
A good answer covers
- Inputs: stock, distance, delivery promise, cost, capacity
- Splitting orders across locations, and the trade-offs it brings
- Re-routing when a location turns out not to have the item
During a big sale, checkout errors suddenly jump. Walk me through how you'd find and fix the problem.
A good answer covers
- Dashboards first: which step, which service, since when
- Recent changes and load on payments, inventory or the database
- Quick relief such as rolling back or shedding load, then the real fix
Explain the difference between SQL and NoSQL databases, and which you'd choose for a product catalogue.
A good answer covers
- SQL: fixed schema, joins, strong consistency; NoSQL: flexible schema, easy to scale out
- A catalogue's varied product attributes and heavy reads
- A reasoned choice, or a mix, with the trade-offs
How does caching help a busy shopping website, and what can go wrong with it?
A good answer covers
- Where caches sit: browser, CDN, application, database
- Stale data such as old prices or stock, and how to expire it
- Many requests hitting the database at once when a cache entry expires
Walk me through a project you built: the design, a hard bug and how you tested it.
A good answer covers
- The problem and your part
- The bug: how you found it and the fix
- How you tested it, and what you'd add now
Why Walmart Global Tech? Fit and HR questions
Why Walmart Global Tech? What interests you about technology for retail?
A good answer covers
- Something specific about retail tech: scale, supply chain, stores and online together
- How your skills fit the team
- What you want to learn
Which of Walmart's values do you connect with most, and why?
A good answer covers
- One value, named once
- A short example from your work or studies
- How it would show in this role
What would you like to learn in your first year here?
A good answer covers
- Specific skills or systems you want to understand
- How you'd go about learning them
- How that learning would help the team
Tips
- Practise talking through data structures and design out loud; interviewers commonly follow your reasoning, not just the answer.
- Think at retail scale: many stores, peaks during sales and stock that changes every minute. Bring that into design answers.
- Prepare a story for each of Walmart's four values; they're published on its corporate site.
- Know your projects deeply; candidates commonly report detailed follow-ups on design choices and testing.
Practise it out loud
A mock interview asks the way Walmart Global Tech's interviewers are known to, follows up on your answers and gives you a report. The warm-up is free, needs no account and checks five of these questions as you answer.
About this guide
Written by Orbit from Walmart Global Tech's own public pages and what candidates commonly report. Orbit isn't affiliated with Walmart Global Tech. The questions are practice questions in the style of its interviews, not questions taken from them. Processes change, so check the job post and what your recruiter tells you.