I applied online. The process took 1 week. I interviewed at Oracle (Bengaluru) in Feb 2014
Interview
Total 5 rounds of technical interview. 1st round is telephonic round. After two days, they have called me for 3 technical rounds. All are on the same day. After 3 days, HR called me for releasing the offer letter.
Technical Prep: Data Structures & Algorithms (DSA)
Oracle commonly asks Easy to Medium-level questions on HackerRank, focusing on efficiency and code quality.
Key Topics: Arrays, Strings, HashMaps, Linked Lists, Binary Trees, and Graphs.
Common Problems: Inverting a binary tree, merging sorted arrays, and finding the first non-repeating character in a string.
Focus: Practice communicating your thought process out loud ("think out loud") and optimizing for both time and space complexity.
1st round elimination.
4 rounds of loop interview.
Loop rounds- 1 DSA Hard
HLD
LLD
Bar Raiser round.
Interview experience was average. First interviewer was not supportive in DSA. In spite of giving 3 solutions, he wanted to hear one that he had predetermined
The process took 4 weeks. I interviewed at Oracle (Zürich) in Jun 2025
Interview
Was for a position at one of their labs and took a bit under a month.
1. Screening call with HR with basic behavioural/experience question.
2. 2x technical interviews (LLMs, parallelism, databases, etc) with coding components.
3. Hiring manager interview (behavioural, technical).
Overall the interviewers were timely, pleasant and reasonable. Often they asked questions about many different areas and went more in depth based on my experience.
Interview questions [1]
Question 1
Describe 3 different optimisations applied to LLM inference.