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Updated weekly · Last refresh Aug 30

Kraken Software Engineer Interview Questions

The questions to prepare for a Kraken Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

50questions
~7htotal time
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1
PipelinesStart here. 6 questions · ~49 min
Data Validation and SerializationMedium

Tests your approach to correctness, schema enforcement, and safe data transformation for client delivery.

Data Qualitydata integrationtransformationsKraken
Integrity for High-Frequency Meter ImportsMedium

Tests your ability to prevent data loss and corruption in high-volume time-series ingestion pipelines.

Data QualityStream Processingdata integrityKraken
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2
Coding15 questions · ~122 min
Python Memory Management ExplainedEasy

Explain how Python manages memory using reference counting, garbage collection, and object allocation.

Hash TablesArraysStringsKraken
Efficient Parsing of Malformed CSVHard

Tests your skills in robust data parsing, performance, and handling dirty real-world inputs.

Data Wranglingpythonperformance analysisKraken
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3
Execution7 questions · ~57 min
Scaling for Unpredictable Traffic SpikesHard

Tests your incident-ready scaling strategy for bursty workloads in production systems.

throughputscalabilitybottlenecksKraken
Zero-Downtime Django MigrationsHard

Tests your ability to plan safe schema changes and deployment strategies for production systems.

Technical FluencyRisk AssessmentdeploymentKraken
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4
System Design5 questions · ~41 min
Event-Driven ArchitectureMedium

Assesses your system design thinking for decoupled services and asynchronous processing.

architectureKraken
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5
Behavioral & Leadership15 questions · ~122 min
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6
More topics2 questions · ~16 min
Database Transaction DefinitionMedium

Tests your understanding of ACID properties and reliable data operations.

JoinsData WranglingKraken
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Detect Overlapping Subscription PeriodsHard
Practice
Practice drill

Find overlapping subscription periods for each customer account using window functions and date comparisons.

Window FunctionsDate FunctionsSelf-JoinsRipplingKraken
SQL Joins for TransactionsMedium
Practice
Practice drill

Combine customer transactions and optional notes using INNER JOIN, LEFT JOIN, aggregation, and conditional spend bands.

JoinsData WranglingtransactionsSupernova TechnologyDeloitte
Top Customers by Net SalesMedium
Practice
Practice drill

Compute top 10 customers by net sales using joins and aggregations, ordering by revenue with deterministic tie-breaking.

SubqueriesJoinsData WranglingGain DigitalTCSZest AI
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.