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PSCU Software Engineer Interview Questions

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

19questions
~3htotal time
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1
CodingStart here. 7 questions · ~70 min
Two Sum with TargetEasy
Practice

Use a hash map to find two array elements that sum to a target in O(n) time.

Hash TablesArraysStringsPSCU
Linked List ReversalEasy
Practice

Reverse a singly linked list in-place using iterative pointer manipulation.

RecursionLinked ListsArraysPSCU
Object-Oriented vs Functional ProgrammingEasy

Compare object-oriented and functional programming in terms of state, abstraction, side effects, and design tradeoffs.

LanguagestechnicalProgrammingPSCU
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2
Execution9 questions · ~90 min
Prioritize Across Competing Data ProjectsEasy

Explain how you prioritize across multiple concurrent data engineering projects with competing stakeholder needs and limited capacity.

Trade-offsRoadmappingScope ManagementPSCU
Describe a Successful ProjectEasy

Share a concrete project you led, focusing on success criteria, stakeholder alignment, execution, and measurable outcomes.

Success CriteriaRoadmappingRisk AssessmentPSCU
Handle a Difficult Team MemberMedium

Explain how you would handle a difficult team member while protecting delivery, relationships, and clarity across stakeholders.

Trade-offsRisk AssessmentDependenciesPSCU
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3
More topics3 questions · ~30 min
Optimizing Slow Database QueriesMedium

Tests your ability to diagnose and improve database query performance.

Joinsquery optimizationAggregationsPSCU
Development Experience FitMedium

Assesses how your background maps to PSCU software engineering needs.

skillsPSCU
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Clean Merchant Transactions for AnalysisHard
Practice
Practice drill

Standardize inconsistent transaction records with CTEs and joins, then summarize clean PSCU transaction activity by merchant category.

Data WranglingAggregationsQualityPSCU
Calculate Monthly Sales Growth by Product CategoryMedium
Practice
Practice drill

Calculate month-over-month sales growth for each product category using JOINs and window functions.

JoinsAggregationsWayfairREVOLVEFanatics
Top Product Revenue Last 30 DaysMedium
Practice
Practice drill

Use joins, a CTE, and aggregation to rank the top 5 products by non-returned revenue in the last 30 days.

Date FunctionsJoinsAggregationsBlue NileO'Reilly Auto PartsCengage
The finish line: interview-readyComplete all 19 questions plus 3 hands-on drills to finish this plan.