Oracle | Interview Experience | (On campus)Application developer intern | 2022

Eligibility: All branches except Biotech with a minimum CGPA of 7.0.

Online Test:

The online test was conducted on the Hackerrank platform and consisted of easy-medium level questions. It had a duration of 105 minutes. The topics covered were:

1. Kadane’s Algorithm: Maximum sum subarray problem.
2. SQL query: Relatively easy question.
3. REST API based question: Retrieving information from a given URL, a common type of question on Hackerrank’s REST API certification test.

Those who solved the coding question and SQL query were shortlisted for the interviews.

Around 60 candidates were short-listed for the interview, and the results were declared after 3-4 days. The interviews were held on Zoom, starting early in the morning, preceded by a presentation.

Interview Rounds:

Round 1:

The interviewer appeared disinterested and conducted an easy-level interview, including the following:

1. Introduction
2. Explanation of linked list workings
3. Array-based question (finding the nth minimum number)

Round 2:

The second round was conducted by a senior SDE at Oracle who showed appreciation for my non-circuit branch background. The interview covered:

1. Basic principles of OOP with real-life examples
2. Designing a data structure for a BOM (bill of materials) model, where to produce a final product all of its components will be listed and cost could be calculated. He asked me to design a data structure for this. I gave a tree approach. He was satisfied with it. When I asked for feedback about it, he said it was good enough.

Round 3:

The third round was conducted by a manager and included a code pair session on Hackerrank, focusing on the following:

1. Generating all substrings of a given string ‘ORACLE’. He also asked for a variation for this where in we have to generate subsequences for which I answered that I would do a recursion for that. He was satisfied with that and didn’t ask me to code.
2. Matrix multiplication (slightly challenging).
3. A puzzle based on probability.

HR Round:

The HR round was conducted by a seasoned HR professional with 25 years of experience at Oracle. The discussion included:

1. Basic introduction.
2. A conversation about my interests and an explanation of my projects.

The HR seemed happy and very much interested in my projects. It was a positive experience overall.

Unfortunately, despite the interview process, I was not selected.