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Updated weekly · Last refresh Aug 30

The Dna Group Software Engineer Interview Questions

The questions to prepare for a The Dna Group Software Engineer interview. Questions from real interview reports rank first. Updated weekly.

19questions
~3htotal time
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1
CodingStart here. 3 questions · ~24 min
Anomaly Detection in Process LogsMedium

Tests data analysis and engineering judgment for detecting issues in manufacturing timelines.

Arraysanomaly detectionperformance analysisThe Dna Group
Genomic Stream Parsing for MemoryHard

Tests ability to implement efficient algorithms for large-scale genomic data processing.

Stream ProcessingBasic AlgorithmspythonThe Dna Group
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2
Behavioral & Leadership10 questions · ~81 min
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3
More topics6 questions · ~49 min
MES Write Delay Failure PreventionHard

Tests fault-tolerance strategies to protect production quality under database and timing failures.

Rollback PlanmanufacturingThe Dna Group
Optimize Inventory Query PerformanceMedium

Tests SQL performance tuning and ability to improve query efficiency for operational data.

Performance TuningindexessqlThe Dna Group
Game Design System ApproachMedium

Assesses system design thinking, decomposition, and tradeoffs for a complex interactive system.

The Dna Group
Real-Time Bioreactor Interface DesignHard

Tests real-time systems thinking and interface design for biotech manufacturing control.

design systemThe Dna Group
SQL Queries From SchemaHard

Evaluates SQL proficiency, query composition, and correctness under escalating complexity.

queriesThe Dna Group
End-to-End Problem SolvingMedium

Assesses ownership, process, and how you deliver outcomes from problem framing to resolution.

Problem SolvingThe Dna Group

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
SQL for Running AverageMedium
Practice
Practice drill

Calculate five-day rolling service averages using daily aggregation, a calendar join, and PostgreSQL window functions.

queriessqlExlEXL ServiceSystem One
SQL Name Prefix QueryEasy
Practice
Practice drill

Use PostgreSQL ILIKE and a prefix pattern to find ISS STOXX employees whose names begin with A.

queriessqlIISS STOXX
SQL for Database ValidationEasy
Practice
Practice drill

Filter the ISS STOXX employee directory for records whose names contain exactly four alphabetic characters.

queriessqlIISS STOXX
The finish line: interview-readyComplete all 19 questions plus 3 hands-on drills to finish this plan.