January 12, 2026 • 1 reads
Summary
I interviewed for the Associate Production Engineer role at DeltaX through an on-campus drive, successfully navigating four rounds including MCQs, coding, AI-based telephonic, and a personal interview, eventually being one of the two selected students.
Full Experience
🧪 Round 1 (MCQ Round)
- The round was 45 minutes long and consisted of 50 MCQ questions from topics such as DBMS, Operating Systems, OOPS, and Pseudocode.
- Out of 1385 students from my college, only 101 were shortlisted for the next round.
🧪 Round 2 (Coding Round)
- This round was 2 hours long, but each of the five questions had an individual time limit.
- We were not allowed to switch between questions once a question was started.
- The questions were mainly based on arrays, strings, and hash maps.
- One of the questions was Combination Sum II.
🧪 Round 3 (Telephonic Interview)
- This was an AI-based interview, where the interviewer already had access to my resume.
- The questions were primarily based on my projects and the skills mentioned in my resume.
🧪 Round 4 (Personal Interview)
- This interview lasted for approximately 1 hour.
- It started with a brief self-introduction, followed by an in-depth discussion of my projects.
- I was then asked one DSA question based on Dynamic Programming, which was a variation of the 0/1 Knapsack problem.
- Additionally, I was asked to design a database schema for Spotify, followed by several discussion questions on the design choices.
✅ Final Result
- Only 2 students were selected from my college, and I was one of them.
Interview Questions (3)
Q1
Combination Sum II
Data Structures & AlgorithmsMedium
One of the coding questions was Combination Sum II.
Q2
0/1 Knapsack Problem Variation
Data Structures & AlgorithmsHard
I was asked a Dynamic Programming question, which was a variation of the 0/1 Knapsack problem.
Q3
Design Database Schema for Spotify
System Design
I was asked to design a database schema for Spotify, followed by several discussion questions on the design choices.