Technical practice
How would you identify the main bottleneck in an end-to-end deep learning application?
What to coverPreparation suggestion: Describe how you would measure application-level performance before isolating expensive stages and distinguishing compute, memory, and communication costs. Explain how you would validate that a local optimization improves the complete workload.
How do linear algebra choices affect deep learning performance?
What to coverPreparation suggestion: Discuss how operation shape, data movement, and numerical behavior can influence the choice of algorithm or computational primitive. Explain how you would evaluate performance without losing sight of correctness.
How would your optimization approach differ between training and inference?
What to coverPreparation suggestion: Compare their computational and memory demands and identify the performance measures relevant to each. Explain how those differences would guide which bottleneck you address first.
How would you optimize a parallel workload across GPU and CPU resources?
What to coverPreparation suggestion: Address work partitioning, synchronization, and low-level architectural constraints. Discuss how you would use measurements to choose between greater parallelism and its associated overhead.
When would you choose different parallel programming approaches for a workload?
What to coverPreparation suggestion: Compare approaches such as CUDA, OpenMP, MPI, or pthreads in terms of where computation runs and how work is coordinated. Explain that the appropriate choice depends on the workload and platform rather than a single preferred tool.
How would you diagnose interconnect-related performance limits?
What to coverPreparation suggestion: Explain how you would separate communication costs from computation and examine data movement across the platform. Discuss trade-offs between reducing communication and changing the algorithm or work distribution.
How would you structure a performance-critical C or C++ algorithm so it remains maintainable?
What to coverPreparation suggestion: Discuss algorithmic complexity, memory access, and opportunities for low-level optimization. Explain how you would measure improvements while preserving correctness and a codebase engineers can develop further.
What computational primitives would you examine when optimizing an LLM or multimodal model?
What to coverPreparation suggestion: Treat these as examples from the posting, with LLM and multimodal expertise listed as preferred. Explain how you would find dominant operations in a particular architecture and evaluate proposed changes against end-to-end performance.
How would you evaluate a novel algorithm for a real-world machine learning workload?
What to coverPreparation suggestion: Describe comparisons against an appropriate baseline, including performance and correctness across representative workload conditions. Explain the trade-off between a promising isolated result and a useful application-level improvement.
How could workload findings inform future hardware, software, or programming models?
What to coverPreparation suggestion: Explain how you would turn measured limitations into a clear technical proposal for research, hardware, and software collaborators. Distinguish evidence from hypotheses and describe how you would compare possible design trade-offs.
Behavioural practice
Tell me about a time you set short- and long-term goals for a technical initiative.
What to coverPreparation suggestion: Use a real situation, the priorities and decisions you made, and the resulting progress or outcome. Show how you balanced immediate performance work with a longer-term technical direction.
Describe a time you worked across teams to resolve a difficult technical problem.
What to coverPreparation suggestion: Give the situation, your actions with relevant collaborators, and the result. Focus on how you reconciled differing technical perspectives or constraints; the role involves customers and research, hardware, and software teams.
Tell me about a time you communicated a consequential design decision.
What to coverPreparation suggestion: Explain the situation, how you presented the evidence and project implications to your audience, and the result. Include how you handled questions or disagreement without claiming unanimous agreement if that was not the outcome.
Describe a time you coached an engineer or improved engineering practice on your team.
What to coverPreparation suggestion: Identify the situation, the specific support or change you led, and its observable result. Emphasize your own leadership actions rather than taking credit for another person's work.
Tell me about a time you hired or helped build a team for complex technical work.
What to coverPreparation suggestion: Describe the team's need, your actions, and the outcome, using a real example. Discuss how you approached technical capability and a diverse, skilled team without asserting an employer-specific hiring process.