Top 39
Prep plan
Updated weekly · Last refresh Aug 30

CACI Solutions Architect Interview Questions

The questions to prepare for a CACI Solutions Architect interview. Questions from real interview reports rank first. Updated weekly.

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1
CodingStart here. 8 questions · ~76 min
First Non-Repeating CharacterEasy
Practice

Find the first non-repeating character in a string using frequency counting and a second pass in O(n) time.

Hash TablesStringsSearchingCACI
Two Sum with TargetEasy
Practice

Use a hash map to find two array elements that sum to a target in O(n) time.

Hash TablesArraysStringsCACI
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2
System Design13 questions · ~124 min
Design Cold Start RecommendationsHard

Design a recommendation system strategy for new users and new items when interaction history is sparse or missing.

Cold StartFeature StoreRecommendation SystemsCACI
Design Feature Drift Monitoring SystemHard

Design a production ranking system with robust feature drift monitoring across batch and real-time features at high QPS.

Feature StoreFeature DriftModel ServingCACI
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3
Pipelines3 questions · ~29 min
Real-Time Dashboard Pipeline DesignHard

Approach for building near-real-time dashboard pipelines with streaming, orchestration, and data quality controls.

Stream ProcessingSchedulingDependenciesCACI
Orchestration for Dependent PipelinesHard

Tests your ability to build robust pipeline workflows that handle failures safely.

SchedulingOrchestrationDependenciesCACI
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4
Behavioral & Leadership11 questions · ~105 min
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5
More topics4 questions · ~38 min
Applying Your Core TechnologiesEasy

Tests technical breadth and ability to map tools to real outcomes.

User NeedsUse CasesCACI
Prioritizing With Limited BudgetMedium

Tests your ability to make value-based trade-offs under constraints.

EstimationFeature PrioritizationMVPCACI
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The finish line: interview-readyComplete all 39 questions to finish this plan.