Oracle Front End Interview Questions

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11th Jun 2025:

Interview experience for Oracle OCI India SDE-3 role

1. Round 1 (DSA): Given a string "1+3-2", print the output "2". Handle all edge cases. No need to follow BODMAS rule
2. Round 2 (JavaScript): Squash Object question on the GreatFrontend (https://www.greatfrontend.com/questions/javascript/squash-object?practice=practice&tab=coding)
3. Round 3 (DSA): a. Similar elements between two array. arr1 = [1, 2, 2, 4, 5] arr2 = [3, 2, 4, 2] . The output should be [2, 2, 4]. b. Follow up on the same question by giving matrix instead of the two array.
4. Round 4 (System Design): Design the frontend of Jira Board
5. Round 5 (System Design): Design a backend system to block a bot request
6. Round 6 (Coding + System Design): (a) Debug a react app. (Functionality is missing from the App. Fix and make the functionality of the App work), (b) High level frontend architecture of the app that you are currently working, (c) Design a backend system for URL shortener

And at least one behavioural question in each round.

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