Staff Engineer iOS Role for Walmart
Summary
I interviewed for a Staff Engineer iOS role at Walmart in Bangalore; the technical deep‑dive covered advanced iOS concepts and design, and I was ultimately rejected.
Full Experience
Hi, I was interviewed with Walmart through a job portal. The HR had an urgent requirement to fill the position and was pushing for the first round to be technical deep dive in iOS.
My Exp: 8 years Current role: Senior Software Engineer (Laid off) Current CTC: 36 LPA Expected CTC: 45 LPA, Walmart was willing to offer more Location: Bangalore
- Round One - Technical round
- How protocols are saved in the memory if they are not conformed by struct or class
- More questions on protocols
- Later more questions on Existential container etc.
- Given an usecase like Walmart, where a product page has product metadata, related items, cart list, reviews, comments etc.
- How would you design the page in iOS
- How would you fetch the requirements from other teams like API with backend team
- How would design the layout using CollectionView
- The interviewer was expecting GraphQL usage and CompositionLayout in Swift.
Final Verdict: Rejected
Interview Questions (6)
Protocol Memory Storage in Swift
How are protocols saved in memory when they are not conformed to by a struct or class?
Existential Container in Swift
Explain the concept of an existential container in Swift and how it works.
Design iOS Product Page Architecture
Given a use case like Walmart where a product page has product metadata, related items, cart list, reviews, comments, etc., how would you design the page in iOS?
Fetching Requirements from Backend Teams
How would you fetch the requirements from other teams, such as the API with the backend team, for an iOS feature?
Design Layout with UICollectionView
How would you design the layout using UICollectionView for a complex product page?
Integrate GraphQL and Compositional Layout in Swift
Explain how you would use GraphQL and Swift's compositional layout to build the product page UI.