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Updated weekly · Last refresh Sep 24D
Duffel Software Engineer Interview Questions
The questions to prepare for a Duffel Software Engineer interview. Questions from real interview reports rank first. Updated daily.
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System DesignStart here. 3 questions · ~24 min
Trade-offs in Database Partitioning and ShardingHard
Assesses understanding of data partitioning strategies and their impacts.
databaseshardingpartitioningDDuffel
Design a Server for External HTTP RequestsMedium
Tests system design for external service integration and request management.
httpDDuffel
Evolve a Single-Threaded Backend for ScalabilityHard
Evaluates strategy for scaling a service-heavy, search/booking workflow.
scalabilityarchitectureDDuffel
2
Technical Fundamentals3 questions · ~24 min
Networking at a ClickMedium
Tests knowledge of the web request lifecycle and networking basics.
NetworkinghttpDDuffel
Cache Invalidation for Updated CSSMedium
Tests caching strategies and cache-busting techniques for static assets.
csscacheDDuffel
HTTP/2 vs HTTP/1.1 PerformanceMedium
Evaluates knowledge of modern HTTP protocols and performance considerations.
WebhttpperformanceDDuffel
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More topics1 question · ~8 min
How TLS WorksMedium
Assesses understanding of secure transport protocols.
tlsCommunicationSecurityDDuffel
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