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Adyen interview questions

30 questions14 coding1 system design15 behavioral6 freeUpdated

This is every question in the Adyen guide, in one list: 14 coding problems, 1 system design and 15 behavioral questions, drawn from what candidates report about Adyen interviews.

Each row shows the round it comes from and links to the lesson that works through it. 6 are free to read in full. The other 24 are Premium, and here you still see their round, difficulty and topic, so you know what you're walking into.

Open the Adyen guide Unlock all 30

Adyen coding interview questions

14 problems, in the order the guide teaches them. The 7 tagged OA are covered in the online assessment lessons. Each lesson gives the full problem, a worked solution and the follow-ups interviewers tend to add.

1Card-Velocity Tracker: Payments in the Last Ten SecondsFreeOAMediumThe Online Assessment
2Card-Type Cache: Bounded BIN-to-Brand LookupFreeOAMediumThe Online Assessment
3Average and Count per MerchantFreeOAMediumThe Online Assessment
4Best TV Show in a GenreFreeOAEasyThe Online Assessment
5Premium medium problemOAMediumAlgorithm Problems in the Test
6Premium medium problemOAMediumAlgorithm Problems in the Test
7Premium medium problemOAMediumAlgorithm Problems in the Test
8Premium medium problemCodingMediumThe Live Coding Round
9Premium medium problemCodingMediumThe Live Coding Round
10Premium medium problemCodingMediumThe Live Coding Round
11Premium medium problemCodingMediumThe Live Coding Round
12Premium medium problemCodingMediumThe Live Coding Round
13Premium medium problemCodingMediumThe Live Coding Round
14Exactly-once capture: authorize, capture, replayFreeSystem designMediumDesign a Payments Platform

Adyen system design interview questions

1 design, worked end to end in its own lesson, from requirements to the architecture and its trade-offs.

#Question
1Design a Payments PlatformFree

Adyen 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 Adyen, and knowing the business (3)

All 3 are Premium

Building to benefit all merchants (3)

All 3 are Premium

Ownership and creating your own path (3)

All 3 are Premium

Winning together across cultures and time zones (3)

All 3 are Premium

Straight talk through disagreement and ambiguity (3)

All 3 are Premium

Read the Adyen behavioral questions

See all 30 Adyen questions by name

Premium opens the 24 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 Adyen interview guide?

30: 14 coding problems, 1 system design and 15 behavioral questions. The guide was last updated in November 2026.

Which rounds do these Adyen interview questions come from?

Of the 14 coding problems, 7 come from the online assessment, 6 from the coding rounds and 1 from the system design lessons. The one system design 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 Adyen interview questions are free?

6 of the 30 are free to read in full, marked Free in the list. The other 24 come with Premium, which also opens all 100 company guides.