Zscaler·Software Engineer

Zscaler Software Engineer interview experience

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BengaluruPosted Jan 2024 · Candidate report, summarized by Dataford

My interview journey felt pretty structured: an OA/assessment first, then three technical rounds, and finally an HR step.

On the technical side, I kept getting pushed on fundamentals and how those map to real problems—starting from C-style fundamentals and then moving deep into DSA with a heavy share from trees and graphs.

One round went in-depth on OOP concepts and OS/low-level topics, and the interviewer was genuinely polite and calm. The next technical discussion covered more DSA optimization thinking—moving beyond brute force and talking through improvements—while also revisiting CS basics. Even when the questions were difficult, the tone was measured, and the interviewer felt friendly and punctual rather

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