Walmart Labs System Design Interview Questions

Review this list of Walmart Labs System Design Technical Program Manager interview questions and answers verified by hiring managers and candidates.

+ Share interview

Share interview

Product Manager Data Engineer Software Engineer Engineering Manager Data Scientist Technical Program Manager Machine Learning Engineer Backend Engineer

Asked at Walmart Labs, Amazon, AtoB + 1 more • 7 months ago
Design a reservation and payment system for a parking garage.
Technical Program Manager
System Design
+2 more
15 answers I was asked this
+12
"Since there is a need for the data to be accurate and consistent without any latency to allocate a spot, can't the data be synchronously synced to replicas after every write as the number of writes are not many per min, instead of read lock phenomena Let me know if i am on a wrong thought here."
Chitapuram N. - "Since there is a need for the data to be accurate and consistent without any latency to allocate a spot, can't the data be synchronously synced to replicas after every write as the number of writes are not many per min, instead of read lock phenomena Let me know if i am on a wrong thought here."See full answer
Technical Program Manager
System Design
+2 more
Asked at Walmart Labs, Meta, Twitter • a year ago
Design Twitter.
Technical Program Manager
System Design
+1 more
12 answers I was asked this
+9
"In the API design, the interviewer is switching between RPC style (operation based endpoints) and REST style (resource oriented). Sticking to one convention and explaining why it is preferred over the other e.g. REST if the twitter domain maps nicely to resources e.g. /tweet or /follower or /user would help to create a more consistent and unified API. It would make it easier for clients to integrate with the API as well."
dreamingincode - "In the API design, the interviewer is switching between RPC style (operation based endpoints) and REST style (resource oriented). Sticking to one convention and explaining why it is preferred over the other e.g. REST if the twitter domain maps nicely to resources e.g. /tweet or /follower or /user would help to create a more consistent and unified API. It would make it easier for clients to integrate with the API as well."See full answer
Technical Program Manager
System Design
+1 more
Asked at Walmart Labs • 4 years ago
Explain how you would design Google Play Store, including your choice of database, its structure, and rationale.
Technical Program Manager
System Design
+1 more
2 answers I was asked this
"I contradict the choice of DB for storing App Data in this case, I believe a NoSQL would have been a better choice. Could you please clarify why you chose RDBMS/SQL?"
Jeet B. - "I contradict the choice of DB for storing App Data in this case, I believe a NoSQL would have been a better choice. Could you please clarify why you chose RDBMS/SQL?"See full answer
Technical Program Manager
System Design
+1 more