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Interview questions from top companies, mapped to the exact round they show up in. Prep for what you will actually face.

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The Loop aggregates publicly shared interview experiences and curated commonly-asked questions, each labeled with its source. Not affiliated with any company listed.

CC BY-NC 4.0 · © 2026

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Z

Security · San Jose, CA

Zscaler

Zero-trust cloud security. Large-scale proxy systems and strong coding.

5 interviews shared — read how each round went.

5 of 5 shown

Role
Level
BackendNew Grad / JuniorNo offer

New Grad / Junior · Backend

A junior backend loop. Fundamentals mattered as much as getting to an answer.

5 rounds · 11 questions · 2024→
FrontendMidOffer

Mid · Frontend

5-round mid frontend process. Fundamentals mattered as much as getting to an answer.

5 rounds · 11 questions · 2023→
Full-stackMidNo offer

Mid · Full-stack

Mid fullstack interview. Fast-paced; expect follow-ups that push on depth.

5 rounds · 11 questions · 2023→
BackendSeniorOffer

Senior · Backend

Senior backend interview. Pragmatic questions — more real-world than pure puzzles.

6 rounds · 13 questions · 2024→
FrontendStaff+Rejected

Staff+ · Frontend

Staff frontend interview. Balanced across coding, design, and collaboration.

5 rounds · 9 questions · 2023→

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