Top 15
Prep plan
Updated weekly · Last refresh Nov 6T
Trustly Backend Engineer Interview Questions
The questions to prepare for a Trustly Backend Engineer interview. Questions from real interview reports rank first. Updated daily.
15questions
~2htotal time
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Technical FundamentalsStart here. 7 questions · ~56 min
Favor Composition Over InheritanceMedium
Recently asked
Tests design judgment on composition vs inheritance.
TTrustly
Explain OOP ConceptsMedium
Recently asked
Tests understanding of OO concepts including abstract classes and interfaces.
javaoopTTrustly
Apply Testing PyramidMedium
Recently asked
Evaluates approach to test strategy and balance across test types.
quality assuranceTestingTTrustly
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2
Behavioral & Leadership4 questions · ~32 min
Empathy and InclusionMedium
Recently asked
Tests interpersonal skills and inclusive leadership practices.
teamworkTTrustly
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3
More topics4 questions · ~32 min
High-traffic System DesignHard
Recently asked
Evaluates ability to design scalable, reliable payment systems.
system designscalabilityTTrustly
Clean Code and ArchitectureMedium
Recently asked
Evaluates approaches to maintainability and architectural discipline.
clean codecode qualityclean architectureTTrustly
Bug vs. Performance PrioritizationMedium
Recently asked
Tests prioritization under competing reliability and performance pressures.
performancePrioritizationTTrustly
Favorite Design PatternsMedium
Recently asked
Assesses practical application of design patterns with a real example.
Problem Solvingdesign patternsimplementationTTrustly
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