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Wells Fargo Software Engineer Interview Questions

The questions to prepare for a Wells Fargo Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

50questions
~7htotal time
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1
CodingStart here. 9 questions · ~79 min
LRU Cache for Fast RetrievalMedium
Practice
Recently asked

Implement an LRU cache using a hash map and doubly linked list to support O(1) get and put operations.

Hash TablesSearchingSortingWells Fargo
Check Subarray in ArraysEasy
Practice

Determine whether one array appears contiguously inside another using KMP pattern matching in linear time.

Wells Fargo
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2
SQL & Data Manipulation8 questions + 3 drills · ~100 min
Understanding ACID Properties in DatabasesMedium
Recently asked

Explain the ACID properties of database transactions and their importance.

Wells Fargo
Second-Highest Client Transaction AmountMedium
Practice
Recently asked
Practice drill

Use a CTE, join, and dense ranking to return each client's second-highest distinct transaction amount.

Window FunctionsSubqueriesRankingThe AmeripriseTata Consultancy Services (North America)Wells Fargo
Top 5% Customers by ChannelMedium
Practice
Recently asked
Practice drill

Use CTEs and percentile-style ranking to find the top 5% of customers by 30-day transaction volume within each marketing channel.

Window FunctionsDate FunctionsRankingCapital OneWells FargoCredit Saison India
Contact Center Agent Performance MetricsHard
Practice
Practice drill

Compute daily agent call KPIs and SLA using joins, aggregations, and window ranking in a contact center model.

ETLAggregationsData ModelingADP
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3
Pipelines9 questions · ~79 min
Cloud Pipeline Data SecurityMedium
Recently asked

Key security considerations for a cloud data pipeline, from ingestion through storage, orchestration, and monitoring.

InfrastructureGovernanceETLWells Fargo
Explain ETL in Data EngineeringEasy
Recently asked

Explain the ETL process, why it matters, and how it fits into a practical data pipeline.

ETLOrchestrationQualityWells Fargo
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4
Execution9 questions · ~79 min
System Design ExperienceMedium
Recently asked

Tests your system design thinking and ability to communicate architecture tradeoffs.

Trade-offsSuccess CriteriaRisk AssessmentWells Fargo
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5
Security & Infrastructure4 questions · ~35 min
Security While Migrating DataMedium

Tests your approach to protecting data confidentiality and integrity during migration.

data migrationSecurityWells Fargo
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6
System Design9 questions · ~79 min
Payment System Failover and ConsistencyHard

Assesses system design for high availability, failover, and consistency in payment workloads.

Wells Fargo
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7
More topics2 questions · ~18 min
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The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.