Costar Software Engineer Interview Questions
The questions to prepare for a Costar Software Engineer interview. Questions from real interview reports rank first. Updated weekly.
Problem Given the root of a binary tree, return its maximum depth as an integer. The maximum depth is the number of nodes along the longest path from the ...
CostarFind the longest substring with all unique characters using a sliding window.
CostarCalculate weighted average selling prices by product using a date-range join, aggregation, and NULL handling.
CostarReverse Costar property search strings with PostgreSQL and flag rows whose stored expected value does not match.
CostarUse GROUP BY and SUM to rank the top 10 customers by total revenue from a single sales table.
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Explain how you would design a scalable application, including trade-offs, risks, stakeholder needs, and how you define success.
CostarEvaluate the execution trade-offs between monoliths and microservices and explain how you would choose the right approach.
CostarAssesses your ability to design data models and APIs for user-generated ratings.
CostarEvaluates your hands-on experience with AWS and your ability to modernize .NET applications.
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