ESS Software Engineer Interview Questions
The questions to prepare for a ESS Software Engineer interview. Questions from real interview reports rank first. Updated weekly.
Reverse a string in Python using character traversal and return the reversed result.
ESSExplain how synchronous and asynchronous programming differ, when each is appropriate, and how async improves I/O-bound throughput.
ESSTests algorithm implementation skills and correctness reasoning.
ESSTests your awareness of failure modes and how you prevent them in real systems.
ESSTests your ability to design usable, consistent APIs with correct contracts and behavior.
ESSTests your understanding of service decomposition and when it is appropriate.
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Tests ownership and judgment in solving a difficult technical problem under ambiguity, including prioritization, communication, and measurable results.
ESSTests your data reasoning skills and ability to derive actionable insights from data.
ESSRank the top 3 completed rides per vehicle per day using joins, a CTE, and ROW_NUMBER.
WaymoRank Fashion Nova products by monthly revenue using joins, aggregation, date grouping, and RANK.
Fashion NovaUse GROUP BY and SUM to rank the top 10 customers by total revenue from a single sales table.
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