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Alameda County Water District Interview Questions

The questions to prepare for Alameda County Water District interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

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1
ExecutionStart here. 14 questions · ~112 min
Roadmap With Competing PrioritiesHard

Build and execute an engineering roadmap when product, reliability, and platform priorities compete for the same team capacity.

RoadmappingScope ManagementPrioritizationAlameda County Water District
Disagreeing on Technical DirectionEasy

Explain how you handled a disagreement over technical direction while balancing delivery, relationships, and business outcomes.

Trade-offsRoadmappingRisk AssessmentAlameda County Water District
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2
Pipelines5 questions · ~40 min
Migrate to Modern Secure DBHard

Tests database migration planning with security and operational continuity considerations.

InfrastructureData ModelingQualityAlameda County Water District
Integrate With Legacy DatabaseHard

Tests migration and integration strategies that minimize risk for ACWD’s legacy systems.

InfrastructureETLIdempotencyAlameda County Water District
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3
SQL & Data Manipulation4 questions + 3 drills · ~62 min
Secure Water Quality SchemaHard

Tests secure data modeling for regulated water quality sampling and traceability at ACWD.

JoinsAggregationsData ModelingAlameda County Water District
Write SQL Queries for Relational DBsEasy

Tests practical SQL experience with relational data structures used in utility operations.

JoinsData WranglingAggregationsAlameda County Water District
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
Contact Center Agent Performance MetricsHard
Practice
Practice drill

Compute daily agent call KPIs and SLA using joins, aggregations, and window ranking in a contact center model.

ETLAggregationsData ModelingADP
Top Customers by Net SalesMedium
Practice
Practice drill

Compute top 10 customers by net sales using joins and aggregations, ordering by revenue with deterministic tie-breaking.

SubqueriesJoinsData WranglingGain DigitalTCSZest AI
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4
Coding3 questions · ~24 min
Script to Pull Data From Remote SensorsMedium

Tests ability to build reliable data ingestion scripts from remote sensing sources for ACWD.

Hash TablesArraysStringsAlameda County Water District
Debugging a Basic Logical FlowEasy

Tests fundamentals of reasoning and debugging approach under simple coding constraints.

MathArraysStringsAlameda County Water District
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5
Behavioral & Leadership3 questions · ~24 min
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The finish line: interview-readyComplete all 29 questions plus 3 hands-on drills to finish this plan.