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Ing Deutschland Interview Questions

The questions to prepare for Ing Deutschland interviews, across all roles. Questions from real interview reports rank first. Updated daily.

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1
CodingStart here. 7 questions · ~57 min
Complex Financial Calculations ServiceHard

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

financial calculationsIng Deutschland
Debugging Performance BottlenecksHard

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

performanceDebuggingIng Deutschland
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2
Security & Infrastructure8 questions · ~65 min
Managing Sensitive User DataHard

Evaluates data protection practices across storage, access, and handling.

data managementIng Deutschland
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3
Software Architecture4 questions · ~32 min
Refactoring Monolith to MicroservicesHard

Tests experience with breaking down monoliths, managing migration challenges, and delivering reliable microservices.

refactoringchallengesmicroservicesIng Deutschland
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4
Behavioral & Leadership9 questions · ~73 min
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5
More topics6 questions · ~49 min
Banking Transaction Locking StrategiesEasy

Explain optimistic and pessimistic locking for banking transactions, including tradeoffs, failure handling, and when each approach is appropriate.

JoinsData WranglingCase WhenIng Deutschland
Tell Me About Your BackgroundEasy

Tests your ability to summarize relevant experience and connect it to consulting work.

Success CriteriaScope ManagementIng Deutschland
State Management in Distributed BackendsHard

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

distributed systemsstate managementIng Deutschland
Optimistic vs Pessimistic LockingMedium

Tests understanding of concurrency control in high-transaction financial systems.

Decision Makingfinancial datatransactionsIng Deutschland
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
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