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Perplexity interview questions

39 questions21 coding3 system design15 behavioral5 freeUpdated

This is every question in the Perplexity guide, in one list: 21 coding problems, 3 system designs and 15 behavioral questions, drawn from what candidates report about Perplexity interviews.

Each row shows the round it comes from and links to the lesson that works through it. 5 are free to read in full. The other 34 are Premium, and here you still see their round, difficulty and topic, so you know what you're walking into.

Open the Perplexity guide Unlock all 39

Perplexity coding interview questions

21 problems, in the order the guide teaches them. Each lesson gives the full problem, a worked solution and the follow-ups interviewers tend to add.

1Clean and Count Retrieved TextFreeCodingEasyPractical Python Problems
2LLM Provider Pool With FailoverFreeCodingMediumPractical Python Problems
3CreditTracker With Ordered ExpirationFreeCodingMediumPractical Python Problems
4Time-Versioned KV Store With RestoreFreeCodingMediumPractical Python Problems
5Premium medium problemCodingMediumThe In-Memory File System
6Premium hard problemCodingHardThe In-Memory File System
7Premium medium problemCodingMediumThe In-Memory File System
8Premium medium problemCodingMediumStreams, Dedup & Sampling
9Premium medium problemCodingMediumStreams, Dedup & Sampling
10Premium medium problemCodingMediumStreams, Dedup & Sampling
11Premium medium problemCodingMediumStreams, Dedup & Sampling
12Premium medium problemCodingMediumStreams, Dedup & Sampling
13Premium medium problemCodingMediumDependencies & Scheduling
14Premium hard problemCodingHardDependencies & Scheduling
15Premium medium problemCodingMediumDependencies & Scheduling
16Premium hard problemCodingHardTokenizers & Model Serving
17Premium medium problemCodingMediumTokenizers & Model Serving
18Premium medium problemCodingMediumTokenizers & Model Serving
19Premium medium problemCodingMediumTokenizers & Model Serving
20Premium medium problemSystem designMediumDesign a Personal Finance Aggregator
21Premium medium problemSystem designMediumDiagnose an Overloaded Kubernetes Cluster

Perplexity system design interview questions

3 designs, each worked end to end in its own lesson, from requirements to the architecture and its trade-offs.

#Question
1Design the Answer EngineFree
2Design a Personal Finance Aggregator (Premium)
3Diagnose an Overloaded Kubernetes Cluster (Premium)

A lock means the design is named here and its walkthrough is Premium.

Perplexity behavioral interview questions

15 questions, grouped by what the interviewer is testing. The lesson explains why each one gets asked and what a strong answer covers.

Why Perplexity, and the future of search (3)

All 3 are Premium

High agency and velocity (3)

All 3 are Premium

Ownership and product judgment (3)

All 3 are Premium

Working through ambiguity (3)

All 3 are Premium

Engineering disagreements on the merits (3)

All 3 are Premium

Read the Perplexity behavioral questions

See all 39 Perplexity questions by name

Premium opens the 34 locked questions on this page, each with the full prompt and a worked answer, and every other lesson in all 100 company guides.

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Common questions

How many questions are in the Perplexity interview guide?

39: 21 coding problems, 3 system designs and 15 behavioral questions. The guide was last updated in November 2026.

Which rounds do these Perplexity interview questions come from?

Of the 21 coding problems, 19 come from the coding rounds and 2 from the system design lessons. The 3 system designs and 15 behavioral questions come from the system design and behavioral rounds. Every row in the list carries its round, so you can start with the one you have booked.

Which Perplexity interview questions are free?

5 of the 39 are free to read in full, marked Free in the list. The other 34 come with Premium, which also opens all 100 company guides.