Dataford
Top 25
Prep plan
Updated weekly · Last refresh Aug 30

NRG Energy Software Engineer Interview Questions

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

25questions
~3htotal time
Track your progressSign up free to work through all 25 questions and resume where you left off.
Start practicing free →
1
SQL & Data ManipulationStart here. 4 questions + 3 drills · ~62 min
Understanding Stored Procedures in SQLMedium

Explain what a stored procedure is and its benefits in SQL databases.

NRG Energy
Optimizing Slow SQL QueriesMedium

Tests query tuning skills, performance diagnosis, and practical use of SQL tooling.

performanceNRG Energy
Schema for Real-Time Energy ConsumptionHard

Tests database design for time-series-like data, scalability, and query patterns for real-time analytics.

schema designdatabase designreal-time dataNRG Energy
Analyzing Operations Bottlenecks with SQLHard
Practice
Practice drill

Use multi-level CTEs, joins, and LAG to identify Samsung regional inventory shortages and late deliveries.

JoinsperformanceAggregationsSamsung ElectronicsApeel Sciences
Top Customers by Region VolumeMedium
Practice
Practice drill

Find the top 3 customers in each region by transaction volume using joins, aggregation, and window ranking.

Window FunctionsJoinsRankingJPMorganChaseSilicon Valley BankNavi
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
More SQL & Data Manipulation questions with a free account
2
Behavioral & Leadership17 questions · ~136 min
Constructive Feedback in Code ReviewsEasy

Tests how you give and receive code review feedback with professionalism, clarity, and a focus on code quality and team growth.

CommunicationfeedbackcollaborationNRG Energy
More Behavioral & Leadership questions with a free account
3
More topics4 questions · ~32 min
Automated Billing Alert WorkflowMedium

Tests system design for event-driven alerts and reliable billing workflows in an energy context.

NRG Energy
TCP Handshake MechanicsMedium

Tests understanding of core networking concepts and protocol behavior.

NetworkingNRG Energy
Java Spring Boot TestingMedium

Evaluates practical experience building services in Java/Spring Boot and validating behavior with tests.

javaTestingspring bootNRG Energy
Legacy App to Cloud Data IntegrationHard

Tests data migration and integration practices focused on correctness, validation, and integrity constraints.

legacy systemsintegrationdata integrityNRG Energy

Sign up to see every question

Create a free account to unlock this list and practice real interview questions.

Get my prep plan
The finish line: interview-readyComplete all 25 questions plus 3 hands-on drills to finish this plan.