GeeksforGeeks Question · Jul 2025

FreeCharge Interview Experience for Senior Software Engineer

SWE Phone Screen Senior

Question Details

Telephone screeningQuestions about project and technologies usedF2F:Round1:1) Design, develop and implement an elevator problem (only 20 minutes) Lots of discussion on w...

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About This Question

This is a reported interview question from a freecharge interview for a swe role (senior level) during the phone screen round reported in 2025.

It covers the following topics: Trees, Strings, Binary Tree, Sql, Trie, System Design .