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Hex interview questions

2 practice questions in the style of Hex's interviews, covering System Design.

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Hex interview questions by the numbers

Last updated October 28, 2026

Katkat has 2 Hex interview questions. The largest topics are System Design (100%). By difficulty: 100% medium. The most common round is Onsite (100%). Frequent concepts include System Design, API Design, Architecture and Concurrency.

Topics

System Design100% · 2

Difficulty

Medium100% · 2

Interview rounds

Onsite100% · 2

Roles

Software Engineer100% · 2

Frequent concepts

System Design100% · 2
API Design50% · 1
Architecture50% · 1
Concurrency50% · 1
Embedded Systems50% · 1
Offline-first50% · 1

Showing 1–2 of 2 results

Design a Notebook App That Synchronizes NotesMedium
This question tests the ability to design a resilient client-server architecture for a collaborative editing application that must function reliably under network instability.
HexSoftware EngineerSystem DesignOnsite
Design an In-Flight Entertainment Experience for a Small ScreenMedium
This problem tests the ability to design a high-availability, accessible, and modular UI/UX system under significant physical and connectivity constraints.
HexSoftware EngineerSystem DesignOnsite

Hex interview experiences

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Five Onsite Rounds and Feedback for Leaning Too Much on AIHex · Software Engineer · Onsite · Jul 2026
I just got done with my onsite interview at Hex, so I wanted to contribute this data point. For the full stack track, I went through quite a few rounds: web dev, system design, product taste, behavioral, and a CTO round. The feedback I ended up getting was that the web dev round relied too much on AI... Personally, I think the line for this kind of AI-native interview format is actually pretty ha…