Pattern Backend Engineer Interview Questions

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

Tests your ability to prevent lost updates and ensure correctness under concurrent writes.

Microservices Data Consistency

Hard

Evaluates your approach to consistency models, transactions, and failure handling in microservices.

data consistencyarchitecturemicroservices

Pattern

High Availability and Fault Tolerance

Hard

Tests knowledge of redundancy, failover, and reliability patterns for distributed services.

distributed systemshigh availabilityfault tolerance

Pattern

REST vs GraphQL Trade-offs

Medium

Assesses your ability to choose APIs that balance performance, caching, and developer experience.

restapi design

Pattern

Real-Time Global Inventory Tracking

Hard

Tests your system design skills for low-latency, correct inventory state at global scale.

system designinventory management

Pattern

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Handling a Critical Production Incident

Medium

Tests ownership and prioritization under pressure during a high-severity production incident, including communication and recovery discipline.

resilienceproduction issuesOwnership

Pattern

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Assesses how you select data stores based on consistency, scaling, and query needs.

Database Indexing Strategies

Medium

Tests your understanding of indexing trade-offs and performance implications.

performancequery optimization

Pattern

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