Qualcomm Interview Experience (Pune Hiring Drive)
Recently, I had the opportunity to attend Qualcomm's in-person hiring drive in Pune.
Getting shortlisted itself felt like an achievement since only 25 candidates were selected for the interview rounds.
Round 1
The first round consisted of:
- 3 LeetCode Medium problems
- 1 Hard problem
- OOP concepts
- Operating Systems fundamentals
I was able to solve the medium problems with optimized approaches. The hard problem led to a discussion around optimization and different ways to think about the solution rather than simply arriving at the final answer.
The interviewer also asked several questions related to OOP and Operating Systems. Most of the discussion focused on understanding concepts, trade-offs, and reasoning rather than memorized definitions.
Round 2
The second round was heavily focused on:
- C++ fundamentals
- Smart Pointers Implementation
- Memory management
- Implementation details
- Language internals
This round taught me an important lesson.
Solving problems using a language and understanding how that language works internally are two very different things.
I realized that while I was comfortable using many concepts during problem solving, explaining them from first principles was much harder. Questions that seem simple on the surface can become challenging when you're asked why something works, what happens internally, or what trade-offs are involved.
Key Takeaway
The biggest lesson from this experience was that writing code is not enough.
For interviews, especially at system-level companies, it's important to understand:
- How things work under the hood
- Language internals
- Memory management
- Design decisions and trade-offs
- The reasoning behind concepts, not just their usage
I wasn't selected in the end, but I left with a much clearer understanding of my strengths and the areas I need to improve.
Every interview exposes gaps that preparation alone cannot reveal.
Hopefully this experience helps others preparing for Qualcomm or similar interviews.