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Updated weekly · Last refresh Sep 9

Luxoft Solutions Architect Interview Questions

The questions to prepare for a Luxoft Solutions Architect interview. Questions from real interview reports rank first. Updated daily.

32questions
~5htotal time
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1
CodingStart here. 4 questions · ~36 min
Find Two Sum IndicesEasy
Practice

Use a hash map to find two array elements that sum to a target in O(n) time.

Hash TablesArraysSortingLuxoft
Design an LRU CacheEasy
Practice

Implement an LRU cache in O(1) average time using a hash table and doubly linked list.

Hash TablesQueueLinked ListsLuxoft
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2
System Design10 questions · ~91 min
Design a Personalized Recommendation RankerHard

Design a personalized recommendation system that turns user preferences into ranked suggestions with retrieval, ranking, and feedback loops.

RetrievalTwo-Tower ModelsRecommendation SystemsLuxoft
Solution Architecture Patterns in CloudMedium

Evaluates your experience designing cloud architectures that meet high-availability goals.

high availabilityLuxoft
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3
Pipelines6 questions · ~54 min
Offline and Online Training PipelinesHard

Tests your ability to architect end-to-end ML data pipelines with reliability and consistency.

ETLBatch ProcessingOrchestrationLuxoft
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4
Behavioral & Leadership7 questions · ~63 min
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5
More topics5 questions · ~45 min
Enterprise GenAI Strategy Trade-offsMedium

Explain a practical framework for applying generative AI to an enterprise problem, with clear value, risks, and trade-offs.

Strategic PlanningBusiness AcumenGenerative AI & LLMsLuxoft
Spring Dependency Injection and TransactionsMedium

Tests your depth of Spring internals and how they influence application behavior.

Communicationtechnical experienceFrameworksLuxoft
Diagnosing Deadlocks and Slow QueriesHard

Tests your troubleshooting approach and your ability to propose architectural fixes for database contention.

performancetransactionsdata integrityLuxoft
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Second Highest Trader SalaryEasy
Practice
Practice drill

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

SubqueriesRankingSortingeClinicalWorksNNeenOpal CanadaInformatica
Second Highest Without AggregatesHard
Practice
Practice drill

Find the second highest salary in each department without using aggregate functions.

SubqueriesRankingSelf-JoinsCredit GenieCisco Restaurant + BarDevoteam
SQL Joins and AggregationsMedium
Practice
Practice drill

Join policy and ISO ClaimSearch claim data to aggregate claim counts and incurred losses by state and policy type.

JoinsGroup ByAggregationsVerisk AnalyticsMarshBroadridge Financial Solutions
The finish line: interview-readyComplete all 32 questions plus 3 hands-on drills to finish this plan.