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eToro Backend Engineer Interview Questions

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

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Handling 1,000 Simultaneous Connections
Medium

Assesses system design thinking for connection management, observability, and scalability.

eToro
Managing State Across Microservices
Medium

Tests approaches for state ownership, synchronization, and consistency across distributed services.

distributed systemsstate managementmicroservices
eToro
Monolith to Microservices Breakdown
Medium

Tests ability to decompose systems safely while managing boundaries, data, and operational complexity.

scalabilitymicroservices
eToro
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High-Concurrency Schema DesignMedium

Evaluates schema design decisions that support correctness and throughput under contention.

database managementschema design
eToro
Indexing for Query Performance
Medium

Evaluates understanding of indexing strategies and their effect on query plans and latency.

database optimizationindexes
eToro
Database Types for Transaction Logging
Medium

Evaluates database selection based on durability, consistency, scalability, and audit needs.

Trade-offs
eToro
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Debugging Production BottlenecksMedium

Assesses systematic troubleshooting and performance diagnostics in live systems.

production environmentDebugging
eToro

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String Manipulation Coding
Medium

Tests ability to implement correct and efficient algorithms for string and numeric manipulation.

coding challengestring manipulation
eToro