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Updated weekly · Last refresh Nov 11
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Visa2Fly Software Engineer Interview Questions

The questions to prepare for a Visa2Fly Software Engineer interview. Questions from real interview reports rank first. Updated daily.

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1
CodingStart here. 4 questions · ~42 min
Analyze Time and Space ComplexityEasy

Explain how to derive time and space complexity for a coding solution and justify the final Big O bounds.

Hash TablesArraysSortingVVisa2Fly
Custom Exceptions in JavaMedium

Evaluates understanding of Java exception design and usage.

javaVVisa2Fly
Deduplicate Characters While Preserving OrderEasy
Practice

Remove repeated characters from a string while preserving the order of their first appearances.

coding challengeBasic AlgorithmsArraysVVisa2Fly
Optimize Brute-Force PerformanceMedium

Tests your skills in analyzing time complexity and improving algorithms for better efficiency.

performanceoptimizationVVisa2Fly
2
More topics4 questions · ~42 min
Java Concepts and ConcurrencyMedium

Evaluates Java fundamentals and your understanding of runtime and concurrency.

javaVVisa2Fly
Backend Data ConsistencyMedium

Tests your approach to maintaining consistent data across services and transactions.

databasedata consistencyVVisa2Fly
Web Frontend FundamentalsMedium

Assesses frontend fundamentals and performance-minded web development practices.

VVisa2Fly
SQL Query BasicsEasy

Tests your understanding of core SQL concepts like SELECT, filtering, and basic query structure.

queriesdatabasesqlVVisa2Fly

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Indexes and Performance TradeoffsMedium
Practice
Practice drill

Classify clinical-data indexes by read usage and estimated write-maintenance overhead.

database optimizationdatabase managementperformanceMedpace
Active Engineers with Java and SQL ExperienceMedium
Practice
Practice drill

Use SQL to identify active engineers with both Java and SQL experience and report their experience levels.

javaJoinsCase WhenGeneral Dynamics Information Technology
Optimize January Completed Order AggregationMedium
Practice
Practice drill

Return a filtered order summary and explain how indexes or denormalization could improve query performance.

database optimizationdatabase managementdatabaseJabil
The finish line: interview-readyComplete all 8 questions plus 3 hands-on drills to finish this plan.