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Updated weekly · Last refresh Aug 30

Airwallex Software Engineer Interview Questions

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

50questions
~8htotal time
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1
CodingStart here. 15 questions · ~151 min
Detect Cycle in Linked ListEasy
Practice

Use Floyd’s two-pointer algorithm to determine whether a singly linked list contains a cycle.

Hash TablesLinked ListsTwo PointersAirwallex
First Non-Repeating CharacterEasy
Practice

Find the first non-repeating character in a string using frequency counting and a second pass in O(n) time.

Hash TablesStringsSearchingAirwallex
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2
Execution10 questions · ~101 min
3
System Design14 questions · ~141 min
High-Load Chat App DesignHard

Assesses your ability to design scalable real-time systems with performance and reliability in mind.

Airwallex
Design a Banking Payment SystemHard

Evaluates your system design approach for a high-reliability banking payment domain.

designAirwallex
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4
Pipelines3 questions · ~30 min
RESTful API Design PrinciplesMedium

Tests your ability to design clear, consistent APIs with correct resource and HTTP semantics.

InfrastructureToolsAirwallex
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5
Behavioral & Leadership4 questions · ~40 min
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6
More topics4 questions · ~40 min
Optimize Database QueriesMedium

Tests understanding of indexing, query plans, and query rewriting to improve latency.

JoinsData WranglingAggregationsAirwallex
Secure Airwallex ServersMedium

Assesses threat modeling and practical security controls for production systems.

Airwallex
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.