Qualcomm

I applied for the Software Engineer Intern role at Qualcomm through the off-campus process. The hiring process was quite technical and had a noticeable focus on C/C++, Operating Systems and low-level programming along with Data Structures and Algorithms. The first stage was the online assessment. It contained programming and technical questions covering C/C++, DSA, Operating Systems and basic programming concepts. A significant part of the assessment focused on C and C++ fundamentals. There were questions involving pointers, memory-related concepts, bit manipulation and code output. Some questions looked straightforward initially but required careful understanding of how C/C++ behaves internally. There were also questions from Operating Systems and Data Structures. I had to manage my time between the conceptual questions and coding problems. After clearing the assessment, I was shortlisted for the technical interviews. Technical Round 1 The first technical round lasted around 45–60 minutes. It started with a short introduction and then moved towards my projects. The interviewer asked me to explain the projects mentioned on my resume and went into the implementation details. Instead of only asking what technologies I had used, the discussion focused on what I had actually implemented and why I had made particular technical decisions. The interview then moved towards C/C++ and Operating Systems. I was asked questions about pointers and memory, including how data is represented in memory and how different memory-related concepts work. There was also a discussion around paging and page tables, including what happens when a CPU requests a page. The interviewer also gave me some C/C++ code snippets and asked me to identify errors or explain their output. Questions touched on concepts such as constructors, object initialization, const, compilation and language behavior. There was also a DSA question where I had to reverse the words of a sentence in-place. I first explained my approach and then implemented it while discussing the time and space complexity. The round required a fairly good understanding of fundamentals rather than just memorized definitions. Technical Round 2 The second technical round continued with C/C++, DSA and core computer science concepts. The interviewer again discussed my projects and asked follow-up questions about their implementation. The discussion then moved towards programming fundamentals and problem solving. I was asked questions involving pointers, bit manipulation and C++ concepts. Some of the questions required me to reason about what the code would actually do rather than simply recall a definition. There was also another discussion around DSA and problem solving. The interviewer was interested in how I approached the problem, whether I could optimize the solution, and whether I understood the complexity of the implementation. The interview was more focused on fundamentals than on advanced competitive-programming-style problems. However, the questions could become tricky when they involved C/C++ internals or Operating Systems. Unfortunately, I was not selected after the interview process. Looking back, the biggest takeaway for me was that Qualcomm's SWE internship interviews can be quite different from a purely DSA-focused product-company interview. Recent Qualcomm internship reports from India also mention DSA combined with OS, C++ output-based questions and detailed project discussions. For preparation, I would focus on C/C++ fundamentals, pointers, memory management, OOP, Operating Systems, bit manipulation and DSA. I would also make sure that every project on the resume can be explained in depth because the interviewer may ask detailed implementation questions. For C/C++, I would particularly revise pointers, references, constructors, virtual functions, const, memory layout, compilation, static concepts and common output-based questions. For OS, paging, virtual memory, processes, threads and synchronization are worth preparing. The experience also taught me that for a systems-oriented company like Qualcomm, knowing how the programming language and operating system work internally can be just as important as being able to solve DSA problems. Overall, I wasn't able to convert the Qualcomm interview into an internship, but the process gave me good exposure to low-level C/C++ and OS-based interview questions and showed me the importance of having strong CS fundamentals along with DSA.