Duke Energy Software Engineer Interview Questions

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

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CodingStart here. 4 questions · ~35 min

Sorting an Array With ComplexityEasy

Practice

Sort outage priority values in ascending order using merge sort and explain the algorithm's time and space complexity.

MathArraysSorting

Duke Energy

Longest Unique Substring in EnoMedium

Practice

Use a sliding window and hash map to find the longest substring without repeated characters in a string.

Hash TablesStringsTwo Pointers

Duke Energy

Compare Stack and Queue OperationsEasy

Explain how stacks and queues differ in ordering, operations, implementations, and common use cases.

StackQueueArrays

Duke Energy

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Execution6 questions · ~52 min

Designing a Database SchemaMedium

Evaluates your database modeling skills for performance, integrity, and long-term scalability.

Trade-offsRisk AssessmentScope Management

Duke Energy

Real-Time Smart Meter DataHard

Evaluates your architecture skills for real-time ingestion, processing, and reliability at scale.

Trade-offsRoadmappingRisk Assessment

Duke Energy

Maintaining Legacy AppsMedium

Tests approach to aging systems and incremental modernization.

legacy systems

Duke Energy

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System Design3 questions · ~26 min

Data Sharing in AngularMedium

Tests architecture decisions for Angular component communication and state management.

state management

Duke Energy

Angular Lifecycle HooksMedium

Evaluates Angular expertise and practical application of lifecycle hooks.

Duke Energy

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Behavioral & Leadership37 questions · ~323 min

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