Top 5
Prep plan
Updated weekly · Last refresh Sep 22
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The Card Backend Engineer Interview Questions

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

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1
SQL & Data ManipulationStart here. 4 questions + 2 drills · ~62 min
Spring Bean Lifecycle and ScopeMedium

Assesses understanding of Spring bean lifecycle and scope management in backend services.

dependency injectionTThe Card
Finally Block SemanticsMedium

Tests your knowledge of Java control flow and exception safety guarantees.

javaTThe Card
Checked vs Unchecked ExceptionsEasy
Practice

Compare checked and unchecked Java exceptions by retrieving their compile-time handling requirements and representative examples.

error handlingjavadatabase conceptsTThe Card
Memory Leaks in High-Throughput JavaHard

Evaluates your ability to reason about JVM memory behavior and diagnose leaks under load.

memory managementmemory leakjavaTThe Card
SQL Queries for RankingMedium
Practice
Practice drill

Rank active HSBC employees by division and return every employee tied for the highest or second-highest salary.

javasqlHsbc
SQL Basics for Data WorkEasy
Practice
Practice drill

Count orders by non-null status and explain how to validate the result.

javanull handlingsql queriesCostco Wholesale
2
More topics1 question · ~10 min
The finish line: interview-readyComplete all 5 questions plus 2 hands-on drills to finish this plan.