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Updated weekly · Last refresh Nov 11

Luxoft Backend Engineer Interview Questions

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

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1
CodingStart here. 4 questions · ~33 min
Design a User Data ModelHard
Recently asked

Tests backend modeling and implementation skills for data access and aggregation.

Luxoft
Code Review and ParallelismMedium
Recently asked

Evaluates collaboration practices and ability to reason about parallel programming.

Luxoft
General Java and CodingMedium
Recently asked

Assesses general backend coding ability and Java proficiency.

javaLuxoft
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2
System Design3 questions · ~25 min
URL Shortening at ScaleHard
Recently asked

Evaluates scalable backend design for high-throughput URL redirection workloads.

system designscalabilityarchitectureLuxoft
Caching for Backend PerformanceMedium
Recently asked

Tests caching strategy selection and integration for backend latency and throughput improvements.

performancecachingarchitectureLuxoft
Load Balancing in MicroservicesMedium
Recently asked

Assesses system design tradeoffs for distributing traffic across backend services.

load balancingarchitecturemicroservicesLuxoft
3
More topics2 questions · ~16 min
Python and SQL FocusMedium
Recently asked

Evaluates practical experience combining Python and SQL for backend development.

sqlpythonLuxoft
SQL and Data ConceptsMedium
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Assesses understanding of core SQL data concepts and transactional guarantees.

Data StructuresLuxoft

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Inner Join vs Left JoinEasy
Practice
Recently asked
Practice drill

Use PostgreSQL to compare matched rows from INNER JOIN with all left-table rows from LEFT JOIN.

null handlingJoinssqlAmazon Lab126LuxoftAArete
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
Recently asked
Practice drill

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

SubqueriesRankingSelf-JoinsCredit GenieDevoteamCisco Restaurant + Bar
The finish line: interview-readyComplete all 9 questions plus 3 hands-on drills to finish this plan.