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Evolv Technologies Holdings Software Engineer Interview Questions

The questions to prepare for a Evolv Technologies Holdings Software Engineer interview. Questions from real interview reports rank first. Updated daily.

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1
CodingStart here. 5 questions · ~46 min
Flatten Nested Lists in PythonEasy
Practice

Flatten arbitrarily nested lists while preserving order using depth-first traversal.

RecursionStackArraysEvolv Technologies Holdings
Handling API Calls in KotlinMedium

Tests your approach to making reliable API calls in Kotlin, including error handling and async patterns.

Hash TablesQueueStringsEvolv Technologies Holdings
Handle a Coding ChallengeMedium

Evaluates problem-solving process and technical reasoning under interview conditions.

coding challengeEvolv Technologies Holdings
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2
Behavioral & Leadership10 questions · ~92 min
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3
More topics5 questions · ~46 min
SQL Grouping and FlatteningHard

Tests your advanced SQL skills for reshaping data with grouping and flattening operations.

Data WranglingCTEsGroup ByEvolv Technologies Holdings
Improving Slow Application PerformanceMedium

Tests your systematic performance diagnosis and remediation strategy.

Trade-offsSuccess CriteriaRisk AssessmentEvolv Technologies Holdings
Data Transformation TechniquesMedium

Tests your ability to transform data for downstream systems and analytics needs.

Data WranglingETLQualityEvolv Technologies Holdings
SQL Query Best PracticesEasy

Tests your fundamentals of writing correct, maintainable, and performant SQL queries.

JoinsCTEsAggregationsEvolv Technologies Holdings
Designing for Increased TrafficHard

Tests your scalability thinking, architecture choices, and tradeoffs for handling growth.

Launch PlanningTrade-offsRoadmappingEvolv Technologies Holdings

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Understanding Primary KeysEasy
Practice
Practice drill

Identify the primary key in an inventory table and return its unique, non-null values.

data validationdata integritydatabase conceptsMinnesota Department Of HealthPcs Research GroupPCS Global Tech
Optimize a Slow SQL QueryHard
Practice
Practice drill

Rewrite a slow PostgreSQL loan payment query to reduce scanned rows while preserving the required aggregated results.

database optimizationJoinsData WranglingAmeripriseEEltro Cyberchrome PrivateEnergyHub
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
The finish line: interview-readyComplete all 20 questions plus 3 hands-on drills to finish this plan.