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Updated weekly · Last refresh Oct 17

DCI Solutions Software Engineer Interview Questions

The questions to prepare for a DCI Solutions Software Engineer interview. Questions from real interview reports rank first. Updated daily.

40questions
~6htotal time
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1
CodingStart here. 5 questions · ~47 min
Two Sum ProblemEasy
Practice

Find two indices in an array whose values add up to a target using a hash map.

Hash TablesArraysTwo PointersDCI Solutions
Reverse a String in PythonEasy
Practice

Reverse a string in Python using character traversal and return the reversed result.

StringsfunctionspythonDCI Solutions
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2
Execution17 questions · ~159 min
Choose Monolith or MicroservicesMedium

Evaluate the execution trade-offs between monoliths and microservices and explain how you would choose the right approach.

Trade-offsRisk AssessmentScope ManagementDCI Solutions
Legacy to Cloud MigrationMedium

Tests your migration strategy for moving legacy workloads to cloud environments.

migrationcloud infrastructurelegacy systemsDCI Solutions
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3
System Design3 questions · ~28 min
Stateful Storage in ContainersMedium

Tests your approach to running stateful workloads with reliable persistence in containers.

containerizationDCI Solutions
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4
Behavioral & Leadership10 questions · ~93 min
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5
More topics5 questions · ~47 min
Handle Errors and ExceptionsEasy

Tests your approach to writing robust code with clear failure handling.

CommunicationLeadershipOwnershipDCI Solutions
Cloud Security ConfigurationMedium

Tests your knowledge of secure cloud configuration for storage and compute resources.

best practicescloud securityDCI Solutions
Database Schema Design ConsiderationsMedium

Tests your ability to design reliable, maintainable schemas for mission-focused applications.

JoinsData WranglingGroup ByDCI Solutions
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Database Indexing Trade-OffsHard
Practice
Practice drill

Analyze a food-order total query and explain index trade-offs for filtering, joins, aggregation, and write overhead.

Trade-offsdatabase optimizationJoinsHelloFresh
Database Indexing Trade-offsHard
Practice
Practice drill

Compare PostgreSQL index strategies by read latency, write overhead, storage size, and an overall cost score.

Trade-offsdatabase optimizationdatabase managementHHostinger InternationalPPorch GroupCapital Technology Group
Database Trade-Offs for DetectionHard
Practice
Practice drill

Compare financial crime detection architectures using joined run metrics, aggregates, NULL handling, and ordered performance results.

fraud detectionTrade-offsdistributed databasesDeloitte
The finish line: interview-readyComplete all 40 questions plus 3 hands-on drills to finish this plan.