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RES Interview Questions

The questions to prepare for RES interviews, across all roles. Questions from real interview reports rank first. Updated daily.

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~3htotal time
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1
Technical FundamentalsStart here. 5 questions · ~40 min
OOP Core PrinciplesMedium

Tests understanding of encapsulation, abstraction, inheritance, and polymorphism in object-oriented design.

software designLanguage Featurestechnical fundamentalsRRES
Battery Capacity TestingMedium

Assesses your understanding of battery testing concepts relevant to energy systems.

technicalRRES
API Security ConsiderationsMedium

Assesses knowledge of API security practices and threat models.

security best practicestechnical knowledgeapi securityRRES
C#, MVC, and Design PatternsMedium

Evaluates practical experience with C#, MVC architecture, and design pattern usage.

design patternsRRES
Background Memory ManagementMedium

Tests understanding of memory allocation, garbage collection, and performance implications.

memory managementprogramming conceptstechnical knowledgeRRES
2
Behavioral & Leadership15 questions · ~120 min
Cross-Functional Team Goal DeliveryEasy

Tests teamwork, communication, ownership, and stakeholder management in delivering a shared goal with measurable results.

Stakeholder ManagementCommunicationLeadershipRRES
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3
More topics2 questions · ~16 min
Discounted Cash Flow WalkthroughHard

Build an unlevered DCF, calculate implied equity value per share, and test sensitivity to WACC and terminal growth.

ValuationDCFWACCRRES
System Design for Substation HardwareHard

Evaluates ability to design systems that interface with electrical hardware and substations.

system designtechnical knowledgeRRES

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