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Banco Santander Software Engineer Interview Questions

The questions to prepare for a Banco Santander Software Engineer interview. Questions from real interview reports rank first. Updated daily.

50questions
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1
SQL & Data ManipulationStart here. 4 questions + 3 drills · ~65 min
UNION vs UNION ALL UsageEasy
Recently asked

Explain how UNION and UNION ALL differ when combining result sets, especially around duplicate handling and performance.

Data WranglingperformanceUnionsBanco Santander
Explain ACID in Transaction SystemsEasy
Recently asked

Explain the four ACID properties and why they matter for reliable transaction processing in SQL systems.

acid propertiestransactionsdata integrityBanco Santander
Top Customers by Region VolumeMedium
Practice
Practice drill

Find the top 3 customers in each region by transaction volume using joins, aggregation, and window ranking.

Window FunctionsJoinsRankingJPMorganChaseSilicon Valley BankBanco Santander
Analyze Customer Purchase Trends with Window FunctionsEasy
Practice
Practice drill

Calculate the monthly spending trends for customers using window functions and joins.

The Home DepotAvisoHewlett Packard Enterprise
Customer Transaction Running TotalsEasy
Practice
Practice drill

Calculate each customer's cumulative transaction amount over time using a CTE and window function.

Window FunctionsDate FunctionsRunning TotalsBanco SantanderAnzBank Of Tokyo-Mitsubishi UFJ
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2
Execution20 questions · ~174 min
Learning New Tech Under DeadlineEasy
Recently asked

Describe how you learned an unfamiliar technology quickly enough to deliver a high-stakes engineering project without missing the deadline.

Launch PlanningRisk AssessmentScope ManagementBanco Santander
Managing Cron Jobs in ProductionMedium
Recently asked

Assesses operational readiness for controlling scheduled jobs in production.

production environmentManagementBanco Santander
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3
Coding19 questions · ~165 min
Return Duplicates in ArrayEasy
Recently asked

Evaluates your approach to implementing an array algorithm and handling edge cases.

Banco Santander
Heap vs Stack MemoryMedium
Recently asked

Tests understanding of memory layout, allocation, and lifetime in programming.

memory managementBanco Santander
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4
Behavioral & Leadership5 questions · ~43 min
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5
More topics2 questions · ~17 min
Microservices and When to Use ThemMedium
Recently asked

Evaluates system design judgment for when microservices are appropriate.

architecturemicroservicesBanco Santander
High-Traffic System DesignHard
Recently asked

Evaluates system design decisions for scalability, latency, and reliability.

distributed systemscachingload balancingBanco Santander
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.