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Delta Dental Ins. Software Engineer Interview Questions

The questions to prepare for a Delta Dental Ins. Software Engineer interview. Questions from real interview reports rank first. Updated daily.

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~1htotal time
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1
Security & InfrastructureStart here. 2 questions · ~16 min
Giving Secure Coding FeedbackMedium

Assesses your communication and influence when enforcing secure coding before release.

feedbackDDelta Dental Ins.
Secure Code Review StandardsMedium

Tests your ability to apply secure coding practices during peer review.

best practicesDDelta Dental Ins.
2
SQL & Data Manipulation1 question + 3 drills · ~38 min
Optimizing Slow SQL QueryHard

Tests your ability to diagnose and improve SQL performance using execution plans and indexing strategies.

performancequery optimizationsqlDDelta Dental Ins.
Optimizing Poorly Performing SQLHard
Practice
Practice drill

Optimize a PostgreSQL reporting query by reducing scanned rows, preserving unmatched records, and selecting the latest related review efficiently.

database optimizationlarge datasetsperformanceTata Consultancy Services (North America)PPriority Technology Holdings, LLCZillow
Optimize SQL QueriesMedium
Practice
Practice drill

Optimize a PostgreSQL aggregation query by filtering early, reducing rows before joins, and returning qualifying active customers.

database optimizationperformanceindexesSofteamSSoftware Medical InformaticsGlassdoor
Optimize a Slow SQL QueryMedium
Practice
Practice drill

Use PostgreSQL query statistics to identify Turo queries with the highest execution time before tuning indexes or query logic.

database optimizationlarge datasetsperformanceTuro

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3
Behavioral & Leadership2 questions · ~16 min
Non-Technical InterestsEasy

Assesses how you present yourself and what motivates you outside of work.

Communicationself introductionDDelta Dental Ins.
Debugging a Large Production BugHard

Evaluates debugging approach, ownership, and problem-solving for complex issues.

Problem SolvingProject ManagementDDelta Dental Ins.
The finish line: interview-readyComplete all 5 questions plus 3 hands-on drills to finish this plan.