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Updated weekly · Last refresh Aug 30

Avantax Software Engineer Interview Questions

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

34questions
~5htotal time
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1
CodingStart here. 15 questions · ~142 min
Linked List ReversalEasy
Practice

Reverse a singly linked list in-place using iterative pointer manipulation.

RecursionLinked ListsArraysAvantax
Palindrome CheckEasy
Practice

Use two pointers to determine whether a PowerStore asset label reads identically in reverse.

ArraysStringsTwo PointersAvantax
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2
Execution4 questions · ~38 min
Optimizing an Existing ApplicationMedium

Tests performance troubleshooting, measurement, and iterative improvement skills.

Trade-offsSuccess CriteriaRisk AssessmentAvantax
Handling Traffic SurgesMedium

Tests your ability to design for reliability, scalability, and incident response under load.

Launch PlanningTrade-offsRisk AssessmentAvantax
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3
Behavioral & Leadership11 questions · ~104 min
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4
More topics4 questions · ~38 min
Trend Analysis on DatasetsMedium

Tests your approach to exploratory data analysis and identifying meaningful trends.

Window FunctionsData WranglingAggregationsAvantax
Real-Time Data Processing DesignHard

Tests your architecture skills for low-latency pipelines and operational reliability.

InfrastructureStream ProcessingOrchestrationAvantax
How Load Balancers WorkMedium

Evaluates understanding of traffic distribution, health checks, and reliability concepts.

Avantax
Design Autocomplete for SearchHard

Evaluates system design tradeoffs for low-latency autocomplete in a financial search experience.

Avantax

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
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
Top Daily Rides by VehicleMedium
Practice
Practice drill

Rank the top 3 completed rides per vehicle per day using joins, a CTE, and ROW_NUMBER.

Window FunctionsJoinsData WranglingWaymo
Monthly Claims Trend and Anomaly DetectionHard
Practice
Practice drill

Use joins, CTEs, aggregations, and date functions to flag unusual monthly claim patterns by provider.

Window FunctionsData WranglingAggregationsModaGlobal Healthcare Exchange
The finish line: interview-readyComplete all 34 questions plus 3 hands-on drills to finish this plan.