I recently went through the interview process at NK Securities for a C++ role, and it was quite rigorous. The first round focused on strong C++ fundamentals with output-based questions (especially around pointers) along with some OS concepts like memory layout. The second round tested core CS fundamentals (OS, CN, CA) and included a system design discussion involving real-time data handling and recovery mechanisms. The final onsite round was a long implementation task where I built a complete system based on a real-world financial dataset
I would like to thank bequant.dev for their support during my preparation. Their structured content and strong focus on C++ fundamentals played a significant role in helping me crack this role. The material is well-organized and genuinely beneficial.