Tell about your last project: what you did, key achievements, and your contribution?
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Frontend
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Into which parts can an HTTP request be divided?
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Clarification: Was the application desktop in the browser or native?
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Have you worked with WebSocket, Server-Sent Events, long polling? Tell me about them.
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Are you aware of different versions of the HTTP protocol (HTTP/1, HTTP/2, HTTP/3)? What are the differences between them?
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How did you measure a 30-40% acceleration in onboarding new developers?
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Besides GET, what other HTTP request methods are there? What are they called?
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How does a hash table (HashMap) work internally?
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What do you want from a new job? What do you need to develop?
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What are the disadvantages of FSD? When would you not implement it?
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Regarding your last workplace, where you worked for three and a half years, it says you are responsible for frontend architecture and technical solutions. Is this your formal role?
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Why are microtasks executed first, followed by macro tasks? Why not the other way around?
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What do you not want to see in a project?
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Have you been a feature owner, designed application architecture and dashboards — what did you lack at your current job?
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JavaScript task: determine the order of console output for code using setTimeout and Promise (micro- and macro-tasks).
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What is the Big O complexity of the unsubscribe method in your implementation?
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How exactly did you improve the performance of heavy pages? What exactly was slowing down the rendering? How did you measure it — from 5 seconds to 150-250 milliseconds?
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Are you familiar with the EventEmitter pattern? Implement a class with subscribe, unsubscribe, and fire methods.
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What happens when a hash table becomes full and can no longer accommodate new elements (rehashing)?
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The bundle was 1.5 MB, now it is 700-800 KB. How was the bundle size reduced? How would you now start optimizing a 2 MB bundle?
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