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IndiaOnsite7 days ago
Walmart Labs

Software Engineer 3 Interview Experience

Walmart Labs·Mid Level / L4
Result
Rejected
Interview date
7 months ago
Timespan
1 week
Difficulty
Difficult

Interview process

Wasn't prepared for lld interview at all. Thought dsa inteview had only 1 question, didn't ask it beforehand so took too much time on the 1st

  • Technical interview

Interview tips

Read about jdk data structures(also concurrent ones) implementation details Also spring internals for Java related role. Lld/dsa questions were usual

Company culture

Don't know much i randomly got a call so gave interview, but it seemed to be bulk interviews of many people and the process was a little disorganised.

Questions asked

Question types asked

Specific questions asked

Merge k sorted linked lists.

Correct optimissed solution

Implement LRU Cache.

Did mistakes in implementation but approach was correct. I thought it would be 1 question inteview only so had to do this one quickly.

Logging library design

Lld question. I wasn't prepared much for lld. Additionally i was asked about spring internals, app related concept, the trick question about one transactional method calling another transactional method of same class, details of linked list implementation in jdk and how to make it thread safe, concurrent hashmap implementation details.

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