Master 30 Senior Staff Engineer interview questions covering architecture, technical leadership, and system design.
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William Swansen has worked in the employment assistance realm since 2007. He is an author, job search strategist, and career advisor who helps individuals worldwide and in various professions to find their ideal careers.
Refactoring a class is the process of breaking a class into smaller ones. An interviewer may ask you this question to understand how you deconstruct a class and organize the smaller classes. While there is no standard methodology for this, the interviewer is trying to understand your architectural style and how you manage and economize your code.

William Swansen has worked in the employment assistance realm since 2007. He is an author, job search strategist, and career advisor who helps individuals worldwide and in various professions to find their ideal careers.
"The advantage of refactoring a class makes it easier to test the code and enable parallel and concurrent processing. Once I have the main class broken into smaller ones, I can organize them to utilize threads, create sub-processes, and run jobs in the background. There are several different tools I can use for this that are specific to the languages I program in."

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Written by William Swansen
30 Questions & Answers • Senior Staff Engineer

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