Photon Interview Questions
The questions to prepare for Photon interviews, across all roles. Questions from real interview reports rank first. Updated daily.
Find the longest substring with all unique characters using a sliding window.
PhotonCompute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.
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Approach for handling schema changes and data quality checks in a high-volume data lake pipeline.
PhotonCompare when to fine-tune a foundation model versus relying on prompt engineering with a managed API.
PhotonExplain how you would diagnose and recover a project that is falling behind schedule without losing stakeholder trust.
PhotonDefine what success means for a project using clear KPIs, a north star, and supporting metrics.
PhotonDesign an A/B test for a new platform feature, including success metrics, power, guardrails, and a clear ship decision.
PhotonDesign an LLM serving system that balances latency, cost, scalability, and safety for production traffic.
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