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Updated weekly · Last refresh Oct 17

eToro Software Engineer Interview Questions

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

28questions
~4htotal time
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1
CodingStart here. 11 questions · ~96 min
Two Sum Pair ExistsEasy
Practice

Determine whether two eToro watchlist values sum to a target using a hash set in O(n) time.

Two PointerseToro
Reverse IntegerEasy

Assesses ability to implement and reason about integer manipulation edge cases.

leetcodeAlgorithmseToro
Pure Functions in TypeScriptMedium

Tests your understanding of functional programming concepts and their benefits.

Hash TablesArraysfunctionseToro
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2
Execution7 questions · ~61 min
Microservices Architecture BenefitsMedium

Tests your ability to explain microservices and reason about architectural tradeoffs.

Trade-offsRoadmappingScope ManagementeToro
Microservices Design PatternsHard

Tests your knowledge of microservices patterns and when to use them in real systems.

Trade-offsRoadmappingScope ManagementeToro
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3
Behavioral & Leadership7 questions · ~61 min
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4
More topics3 questions · ~26 min
Understanding Database Indexing PurposeMedium

Explain the purpose of using indexes in databases and their impact on query performance.

eToro
TCP UDP and Linux BasicsMedium

Tests practical understanding of networking fundamentals relevant to production systems.

NetworkinglinuxeToro
System Design for eToro ScaleHard

Evaluates distributed systems thinking, tradeoffs, and architecture decisions.

distributed systemsarchitectureeToro

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Weekly Signup Cohort RetentionHard
Practice
Practice drill

Calculate weekly retention by signup cohort using CTEs, joins, date truncation, and distinct user counts.

Window FunctionsDate FunctionsAggregationsBrexPostmaneToro
Database Indexing Trade-offsHard
Practice
Practice drill

Compare PostgreSQL index strategies by read latency, write overhead, storage size, and an overall cost score.

Trade-offsdatabase optimizationdatabase managementHHostinger InternationalPPorch GroupCapital Technology Group
Database Trade-Offs for DetectionHard
Practice
Practice drill

Compare financial crime detection architectures using joined run metrics, aggregates, NULL handling, and ordered performance results.

fraud detectionTrade-offsdistributed databasesDeloitte
The finish line: interview-readyComplete all 28 questions plus 3 hands-on drills to finish this plan.