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.
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:
- Describing a situation that was resolved through avoidance or escalation without personal effort.
- Choosing a simple list or array without considering query performance.
- Describing a situation where they simply gave in without trying to resolve the disagreement constructively.
- Failing to account for race conditions in concurrent environments.
Get the full Airwallex playbook, free
Every round, the exact grading rubric interviewers score against, all the questions, and unlimited mock-interview practice. Free account, no credit card.
Test Yourself: Real Airwallex Questions
Three real prompts pulled from our database.
Type · coding
Write a function that takes a list of financial transactions, each with a timestamp, amount, and type (debit/credit), and returns the running balance after each transaction. Handle potential out-of-order transactions.
Type · behavioral
Tell me about a time you disagreed with a teammate or manager on a technical approach. How did you handle the situation, and what was the resolution?
+ many more questions, signals, and worked examples
Sign up to unlock the full Airwallex grading rubric
Airwallex Interview Question Bank
A sample from our database, grouped by round. Sign up to see the full set.
9 of 15 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
5- 8
Type · collaboration
Tell me about a time you had to collaborate closely with another team (e.g., Sales, Product, Engineering) to achieve a customer goal or resolve a complex issue. What was your role, and how did you ensure effective collaboration? - 9
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? - + 3 more questions in this round (sign up to unlock)
Unlock all 15 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.
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.
A strong answer shows: Correctness of conversion logic; Efficiency of data structures used; Robustness and error handling.
Write a function that takes a list of financial transactions, each with a timestamp, amount, and type (debit/credit), and returns the running balance after each transaction. Handle potential out-of-order transactions.
A strong answer shows: Correct handling of out-of-order transactions; Efficient calculation of running balance; Accuracy of debit/credit logic; Code clarity and testability.
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