Type · debugging
Here is a piece of code that processes a batch of payments, but it's occasionally failing with incorrect totals or missing transactions. Debug and fix the issues.
Growth · Software Engineer Interview Guide
Sign up to see ATSHeadquartered in Hong KongInterview language: English
How to Pass the Airwallex Software Engineer Interview in 2026
The Airwallex DNA (TL;DR)
The Airwallex interview process, reflecting their Borderless Card product, grades candidates on their ability to build and scale robust financial solutions for global markets. They seek individuals who can navigate complex regulatory environments and contribute to a unified financial infrastructure, demonstrating practical application of skills in a high-growth, international fintech context.
The Airwallex Interview Loop
Your onsite loop will typically consist of 5 rounds.
- 1
Round 1
Recruiter ScreenMotivation, role fit, logistics. - 2
Round 2
Coding ScreenLeetCode-medium algorithmic problems under time pressure. - 3
Round 3
System DesignDistributed systems, trade-offs at scale, architecture under constraints. - 4
Round 4
Onsite CodingLeetCode-hard, debugging, code clarity, edge cases. - 5
Round 5
Behavioral / LeadershipPast evidence of ownership, influence, resolving conflict.
The Danger Zone: Top Reasons Candidates Fail
Based on our database of Airwallex interview outcomes, avoid these common traps:
- Not addressing potential failure points like network issues or third-party API downtime.
- Not handling potential errors like invalid currency codes or missing exchange rates.
- Inefficiently looking up exchange rates repeatedly instead of using a map or cache.
- Focusing only on rule-based detection and ignoring machine learning approaches.
Test Yourself: Real Airwallex Questions
Three real prompts pulled from our database.
Type · behavioral
At Airwallex, we often prioritize speed to market for new currency corridors while maintaining strict compliance standards. Tell me about a time you had to balance the need for rapid feature deployment with the necessity of rigorous financial auditability or regulatory requirements in a production system.
Type · algorithmic
Given a list of international transaction amounts and their currencies, write a function to calculate the total amount in a target currency, handling currency conversions. Assume exchange rates are provided.
+ many more questions, signals, and worked examples
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Airwallex Interview Question Bank
A sample from our database, grouped by round. Sign up to see the full set.
9 of 13 questions shown
1
Recruiter Screen
1- 1
Type · motivation
What interests you about working at Airwallex specifically, given our focus on cross-border payments and financial technology for businesses?
2
Coding Screen
3- 2
Type · algorithmic
Given a list of international transaction amounts and their currencies, write a function to calculate the total amount in a target currency, handling currency conversions. Assume exchange rates are provided. - 3
Type · algorithmic
Design a data structure that can efficiently store and retrieve a user's transaction history, supporting queries by date range and transaction type (e.g., payment, refund). - + 1 more questions in this round (sign up to unlock)
3
System Design
3- 4
Type · system-design
Design a system to process and reconcile international payments for Airwallex. Consider scalability, reliability, and handling of different payment methods and currencies. - 5
Type · system-design
How would you design a real-time currency exchange rate service that can handle high throughput and provide accurate, up-to-date rates to other services within Airwallex? - + 1 more questions in this round (sign up to unlock)
4
Onsite Coding
3- 6
Type · coding
Implement a function to validate if a given string represents a valid IBAN (International Bank Account Number). Consider the checksum calculation and country-specific formats. - 7
Type · debugging
Here is a piece of code that processes a batch of payments, but it's occasionally failing with incorrect totals or missing transactions. Debug and fix the issues. - + 1 more questions in this round (sign up to unlock)
5
Behavioral / Leadership
3- 8
Type · behavioral
Tell me about a time you had to work with a complex or legacy system. What challenges did you face, and how did you approach understanding and improving it? - 9
Type · behavioral
Describe a situation where you had to make a significant technical decision with incomplete information or under tight deadlines. What was your process, and what was the outcome? - + 1 more questions in this round (sign up to unlock)
Unlock all 13 Airwallex questions, free
No credit card. Every question with its framework, the grading signals interviewers score against, and a worked answer for each.
Interview tracks at Airwallex
How Airwallex's DNA translates across functions. Pick your role.
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Practice Airwallex interviews end-to-end
Airwallex Mock Interview
Run a live mock interview with our AI interviewer using Airwallex-style prompts. Get scored on structure, signal, and answer length - exactly how the real loop grades you.
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STAR Stories for Airwallex Behavioral Rounds
Build a Story Bank of your past wins, mapped to the leadership signals Airwallex interviewers grade on. Reuse them across every behavioral round.
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Airwallex Interview Prep Hub
The frameworks behind every Airwallex round: CIRCLES for product sense, hypothesis-driven debugging for analytical, STAR for behavioral. Learn each one in 10 minutes.
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Interview Frameworks
CIRCLES, STAR, AARRR, RICE, MECE. The exact frameworks that make Airwallex interviewers nod instead of frown. Step-by-step playbooks with the moves and the pitfalls.
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Sample answers
What a strong answer to these Airwallex interview questions shows.
Here is a piece of code that processes a batch of payments, but it's occasionally failing with incorrect totals or missing transactions. Debug and fix the issues.
A strong answer shows: Systematic debugging approach; Identification of the root cause; Correctness of the fix; Understanding of potential race conditions or data integrity issues.
At Airwallex, we often prioritize speed to market for new currency corridors while maintaining strict compliance standards. Tell me about a time you had to balance the need for rapid feature deployment with the necessity of rigorous financial auditability or regulatory requirements in a production system.
A strong answer shows: Understanding of fintech regulatory constraints; Ability to articulate technical trade-offs to business stakeholders; Prioritization of system integrity in high-stakes environments.
Frequently asked questions
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