Top 17
Prep plan
Updated weekly · Last refresh Oct 7

Ing Deutschland Backend Engineer Interview Questions

The questions to prepare for a Ing Deutschland Backend Engineer interview. Questions from real interview reports rank first. Updated daily.

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1
Security & InfrastructureStart here. 6 questions · ~49 min
AuthN and AuthZ Trade-offsMedium

Assesses ability to choose and justify security patterns for backend services.

Trade-offsauthenticationauthorizationIng Deutschland
Security with Tokens and EncryptionMedium

Evaluates practical security decisions around tokens and encryption for backend services.

encryptionSecurityIng Deutschland
Preventing SQL InjectionMedium

Evaluates secure query practices and defenses against common injection attacks.

sql injectionSecurityIng Deutschland
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2
Coding5 questions · ~41 min
Debugging Performance BottlenecksHard

Tests systematic debugging and performance optimization in production-like systems.

performanceDebuggingIng Deutschland
Complex Financial Calculations ServiceHard

Tests ability to implement correct, robust business logic for backend financial services.

financial calculationsIng Deutschland
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3
Behavioral & Leadership3 questions · ~25 min
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4
More topics3 questions · ~25 min
Designing a Loan Repayment PlanMedium

Tests your ability to implement correct loan repayment logic and model it in backend systems.

Problem Solvingfinancial planningIng Deutschland
Secure Data Flow for Loan CalculationsHard

Evaluates secure architecture for handling sensitive loan data end to end.

SecurityIng Deutschland
State Management in Distributed BackendsHard

Assesses design choices for consistency, scalability, and reliability in distributed systems.

distributed systemsstate managementIng Deutschland

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