I applied online. The process took 2 weeks. I interviewed at Walmart in Feb 2024
Interview
Round1: Screening with Karat (3rd party)
Duration: 1 hr
Section 1 :(10 to 15 mins) Prestented with 5 topics (Design patterns, Testing, Front-end development, Networking and ...). Need to choose 2 topics.
Around 7 or 8 questions were asked.
Answered except one.
Section 2 : Coding (45 mins)
(Not exact question but similar)
Q1. Given a list of id and a item find the all the pairs of id's and the common items between the.
used a hashmap of set and solved the problem and gave the time and space complexities and explained, executed the code well in under 30 minutes.
Q2. Given a list of node and its previous node. list the nodes in order.
Used a hasmap and order the courses in order and explained, time and space complexities and gave a dry run of code and finished up 95% of code and the time was up.
Interviewer gave a feedback that he/ she was inpressed by the explanation and approach that i took and very much pleased by my performance.
Interview questions [1]
Question 1
Given a list of id and a item find the all the pairs of id's and the common items between the.
Looking back, I feel like I gained a clearer understanding of the process, even though I ultimately turned down the offer. The technical rounds were straightforward, featuring an implementation question on an LRU cache and a system design question about a rate limiter for an API. What helped me a lot was the walkthroughs for system design I went through on PracHub, which made those types of questions feel familiar. Overall, it was an easy experience, but I just didn't feel it was the right fit for me.
Interview questions [2]
Question 1
Implement an LRU cache with O(1) get and put using a hash map plus doubly linked list
First, standard short phone call with recruiter. Then a 1-hour interview with an engineer on the team, asked about technical experience and background, and did a live coding assessment via video call. Fairly standard Leetcode style questions
Intense but rewarding — the interview for the Software Engineer position at Walmart Labs was tougher than I anticipated. The technical rounds included an LRU Cache implementation question where I had to articulate my design thoughts on thread safety, followed by a complex system design for a real-time inventory service. What made a difference in my prep were the company-specific prompts I found on prachub.com; they really helped me understand the types of questions I might face. Despite the challenging nature of the interviews, I ultimately received an offer but chose to decline.
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