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Kraken Digital Asset Exchange Backend Engineer Interview Questions

The questions to prepare for a Kraken Digital Asset Exchange Backend Engineer interview. Questions from real interview reports rank first. Updated weekly.

35questions
~5htotal time
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1
System DesignStart here. 11 questions · ~89 min
Real-Time Order Matching EngineHard

Assesses system design skills for low-latency matching, correctness, and scalability.

Kraken Digital Asset Exchange
Data Consistency Across MicroservicesMedium

Assesses approaches to consistency, correctness, and failure handling in distributed systems.

strategiesdata consistencymicroservicesKraken Digital Asset Exchange
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2
Coding3 questions · ~24 min
Go Code Output ReasoningHard

Tests ability to reason about Go code behavior and underlying data structures.

goData StructuresKraken Digital Asset Exchange
Go Code Output from Data StructuresMedium

Tests ability to reason about Go code behavior and underlying data structures.

Kraken Digital Asset Exchange
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3
Security & Infrastructure5 questions · ~41 min
Symmetric vs Asymmetric EncryptionMedium

Evaluates understanding of cryptography primitives and when to apply each in backend systems.

encryptionSecurityKraken Digital Asset Exchange
Secure Internal Service CommunicationMedium

Tests design of transport security, authentication, and authorization for service-to-service calls.

SecurityKraken Digital Asset Exchange
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4
Behavioral & Leadership13 questions · ~105 min
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5
More topics3 questions · ~24 min
Improve a Test and Handle CasesMedium

Evaluates test design, edge-case thinking, and ability to reason about correctness.

Problem SolvingKraken Digital Asset Exchange
Database Experience Pros and ConsMedium

Assesses breadth of database knowledge and ability to justify trade-offs for backend systems.

Kraken Digital Asset Exchange
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Top 10 Products SQL QueryEasy
Practice
Practice drill

Use date filtering, GROUP BY, SUM, and ORDER BY to find Artefact's top 10 products by sales last month.

sqlArtefactKraken Digital Asset ExchangeAmazon Development Center U.S.
Eventual ConsistencyMedium
Practice
Practice drill

Find catalog items that were updated in the source but not yet reflected in Spotify's serving layer.

data consistencySpotifyDatabricks
Second Highest Trader SalaryEasy
Practice
Practice drill

Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.

SubqueriesRankingSortingeClinicalWorksInformaticaSpectraforce Technologies
The finish line: interview-readyComplete all 35 questions plus 3 hands-on drills to finish this plan.