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NVIDIA·Software Engineer·Technical Phone Screen·Intermediate

Intermediate
May 2026

Summary

Interviewed for a SWE role at Nvidia and got asked about CUDA experience pretty much right out of the gate. Not a ton of content to share but it set the tone for a GPU-focused technical conversation.

Questions Asked (1)

Q1

What is your experience working with CUDA?

Technical Trade-offsSystem Design
Author's notes

Expected this at Nvidia but still fumbled the opener a bit.

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AI HintsAI Generated

Suggested Approach

Structure your answer around concrete projects where you used CUDA, emphasizing the problems you solved and the trade-offs you made. Highlight your understanding of GPU architecture and how it influenced your optimization decisions. Tailor your response to NVIDIA's focus on performance and system design.

Pro tip: Quantify your impact with metrics like speedup or efficiency gains, and be ready to discuss a challenging CUDA bug you fixed—this shows depth and problem-solving skills that NVIDIA values.

1. Summarize Your CUDA Experience

Provide a brief overview of your years of experience, CUDA versions used, and types of projects (e.g., deep learning, HPC, graphics).

2. Highlight a Key Project

Choose one or two significant projects and describe the problem, your CUDA implementation, and the outcome.

3. Discuss Technical Challenges and Trade-offs

Explain specific challenges like memory bottlenecks or kernel optimization, and the trade-offs you made (e.g., occupancy vs. register usage).

4. Quantify Results and Impact

Share measurable results such as speedup, reduced latency, or improved throughput to demonstrate effectiveness.

5. Connect to NVIDIA's Work

Relate your experience to NVIDIA's technologies (e.g., TensorRT, cuDNN) and express enthusiasm for contributing to GPU-accelerated solutions.

Key Points to Mention

  • CUDA programming model: kernels, threads, blocks, grids
  • Memory hierarchy: global, shared, local memory, and optimization techniques
  • Performance optimization: occupancy, coalescing, avoiding bank conflicts
  • Tools: Nsight, nvprof, CUDA-GDB for debugging and profiling
  • Parallel algorithms: reduction, scan, matrix multiplication
  • Integration with other technologies: MPI, OpenMP, deep learning frameworks

AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.