AvidXchange Software Engineer Interview Questions

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

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CodingStart here. 15 questions · ~162 min

Flatten Nested Data StructuresMedium

Practice

Traverse arbitrarily nested arrays and return their scalar values in left-to-right order using depth-first traversal.

RecursionStackArrays

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Flatten Nested DataHard

Practice

Flatten nested dictionaries and arrays into dot-delimited paths using iterative depth-first traversal.

Data StructuresArray Manipulation

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Directed Graph Cycle DetectionMedium

Practice

Determine whether a directed graph contains a cycle using DFS or topological sorting.

RecursionGraphs

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SQL & Data Manipulation10 questions · ~108 min

Optimize SQL QueriesMedium

Practice

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

database optimizationperformanceindexes

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Second Highest Without AggregatesHard

Practice

Find the second highest salary in each department without using aggregate functions.

SubqueriesRankingSelf-Joins

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Execution19 questions · ~205 min

NET Framework FundamentalsEasy

Tests baseline knowledge of .NET concepts and how you apply them in development.

Trade-offsScope Management

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Handle Partial DB Transaction FailuresMedium

Tests transactional thinking, error handling, and consistency strategies for backend systems.

Rollback PlanTrade-offsRisk Assessment

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Behavioral & Leadership5 questions · ~54 min

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