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Prep plan
Updated weekly · Last refresh Aug 30

Greensky Software Engineer Interview Questions

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

39questions
~6htotal time
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1
CodingStart here. 7 questions · ~60 min
Longest Substring Without RepeatsMedium
Practice

Find the longest substring with all unique characters using a sliding window.

Hash TablesStringsTwo PointersGreensky
Sorting and Searching AlgorithmsEasy

Tests algorithm fundamentals and practical coding ability under time constraints.

SearchingSortingGreensky
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2
Security & Infrastructure6 questions · ~51 min
Spring Boot ExperienceEasy

Tests hands-on backend development experience with a common Java framework.

InfrastructureToolsGreensky
Cloud and Deployment StrategiesMedium

Tests practical experience deploying software in cloud environments with an emphasis on reliability.

InfrastructureToolsGreensky
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3
System Design3 questions · ~26 min
Real-Time Transactions With ReliabilityHard

Tests advanced system design for reliable APIs, scaling, and robust failure recovery.

ML RankingRecommendation SystemsGreensky
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4
SQL & Data Manipulation5 questions + 3 drills · ~73 min
SQL vs NoSQL DifferencesMedium

Tests understanding of data storage trade-offs and when to choose different database paradigms.

nosqlsqlGreensky
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
Handle Missing Financial Input ValuesMedium
Practice
Practice drill

Use joins, CTEs, and CASE logic to flag and fill missing financial fields for Qlik planning records.

Data WranglingETLQualityQlik
Clean Event Statuses for AnalysisEasy
Practice
Practice drill

Clean raw status text with TRIM and LOWER, filter unusable rows, and count usable events by cleaned status.

Data WranglingETLQualityDatabricks
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5
Behavioral & Leadership14 questions · ~120 min
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6
More topics4 questions · ~34 min
Custom Data Ingestion FrameworkHard

Tests ability to build reliable ingestion pipelines with attention to correctness and scalability.

ETLOrchestrationGreensky
Scaling for Millions of UsersHard

Tests scalability planning across architecture, performance, and operational concerns.

RoadmappingRisk AssessmentGreensky
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The finish line: interview-readyComplete all 39 questions plus 3 hands-on drills to finish this plan.