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System Design How would you model the db tables for rover chat where there is a sitter and an owner chatting back and forth? sometimes there is also a support agent that can step into the chat so you have to account for 3 people in the chat. Then after that, they ask you how you would support a huge load with x amount of messages per day, etc.
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Senior Software Engineer

Interviewed at Rover.com

4.3★
Dec 13, 2024

System Design How would you model the db tables for rover chat where there is a sitter and an owner chatting back and forth? sometimes there is also a support agent that can step into the chat so you have to account for 3 people in the chat. Then after that, they ask you how you would support a huge load with x amount of messages per day, etc.

Design Patterns Candidates were asked to describe various design patterns. It's highly recommended to study several key patterns beforehand and be prepared to discuss their implementation and use cases in detail. Concurrency and Database Management Questions covered multi-threading challenges and database access patterns. Interviewers expect familiarity with different table locking strategies and how to handle concurrent data access scenarios effectively. Practical Coding Assessment Whiteboarding Exercise The coding challenge required creating an ASP.NET application to find an error and fix a byte array with WAV audio data. Development Environment Preparation Candidates should ensure their IDE (such as VS Code) is fully configured and ready to demonstrate coding proficiency. Quick navigation and efficient IDE usage are evaluated as part of the technical assessment. The exercise extended to building a web UI component to expose the functionality through an ASP.NET application.
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Sr. Software Engineer

Interviewed at Motorola Solutions

4.2★
Aug 15, 2025

Design Patterns Candidates were asked to describe various design patterns. It's highly recommended to study several key patterns beforehand and be prepared to discuss their implementation and use cases in detail. Concurrency and Database Management Questions covered multi-threading challenges and database access patterns. Interviewers expect familiarity with different table locking strategies and how to handle concurrent data access scenarios effectively. Practical Coding Assessment Whiteboarding Exercise The coding challenge required creating an ASP.NET application to find an error and fix a byte array with WAV audio data. Development Environment Preparation Candidates should ensure their IDE (such as VS Code) is fully configured and ready to demonstrate coding proficiency. Quick navigation and efficient IDE usage are evaluated as part of the technical assessment. The exercise extended to building a web UI component to expose the functionality through an ASP.NET application.

Javascript Program For Stock Buy Sell To Maximize Profit The cost of a stock on each day is given in an array, find the max profit that you can make by buying and selling in those days. For example, if the given array is {100, 180, 260, 310, 40, 535, 695}, the maximum profit can earned by buying on day 0, selling on day 3. Again buy on day 4 and sell on day 6. If the given array of prices is sorted in decreasing.
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Senior Software Engineer

Interviewed at Diagnal

4.2★
Feb 25, 2024

Javascript Program For Stock Buy Sell To Maximize Profit The cost of a stock on each day is given in an array, find the max profit that you can make by buying and selling in those days. For example, if the given array is {100, 180, 260, 310, 40, 535, 695}, the maximum profit can earned by buying on day 0, selling on day 3. Again buy on day 4 and sell on day 6. If the given array of prices is sorted in decreasing.

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