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Updated weekly · Last refresh Aug 30

Smart Energy Water Software Engineer Interview Questions

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

50questions
~7htotal time
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1
SQL & Data ManipulationStart here. 6 questions + 2 drills · ~71 min
Second Highest Trader SalaryEasy
Practice

Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.

SubqueriesRankingSortingSmart Energy Water
Database IndexesMedium

Tests indexing strategy knowledge and awareness of performance trade-offs.

Performance TuningperformanceSmart Energy Water
Normalization and Normal FormsMedium

Tests data modeling fundamentals and ability to reason about schema design quality.

normalizationdatabase designdata integritySmart Energy Water
Ranking Customers with Window FunctionsEasy
Practice
Practice drill

Rank Entergy customers by monthly energy usage within each region using aggregation and the RANK window function.

Window FunctionsRankingpartitioningEntergySmart Energy Water
Rank Top Service CategoriesEasy
Practice
Practice drill

Use RANK() and grouped revenue to find ServiceTitan's top three service categories in each region.

RankingperformancesqlServiceTitan
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2
Coding12 questions · ~101 min
OOP Encapsulation and InheritanceMedium

Tests core OOP knowledge and your ability to apply it to real code design.

Smart Energy Water
Typical C# and Web API QuestionsMedium

Evaluates your readiness to discuss common C# and Web API topics with concrete examples.

Smart Energy Water
Var vs Dynamic in C#Medium

Tests understanding of C# typing, compile-time behavior, and runtime dynamics.

Smart Energy Water
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3
Behavioral & Leadership31 questions · ~262 min
OOP Pillars and PolymorphismMedium

Tests core OOP knowledge and ability to apply it with practical examples.

technical experienceoopSmart Energy Water
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4
More topics1 question · ~8 min
Servers, Monitoring, and SupportMedium

Evaluates your practical knowledge of infrastructure concepts that support reliable services.

monitoringsystem administrationSmart Energy Water
The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.