Airwallex coding interview
questions, leaked.
1 problems reported across recent Airwallex interviews. Top patterns: array, stack, monotonic stack. The list below is what most reported candidates actually saw, plus the honest play if you can't grind all of it.
Airwallex's online assessment is sparse but sharp. One problem reported, and it's a medium-difficulty monotonic-stack pattern wrapped in an array context. You're not facing a broad gauntlet here, but the problem itself demands clean algorithmic thinking. If you haven't built a monotonic stack under time pressure, you'll feel that gap the moment the timer starts. StealthCoder runs invisibly during the assessment, so if the stack logic doesn't click, you have a real-time backup to surface a working solution.
Top problems at Airwallex
| # | Problem | Diff | Frequency | Pass % | Patterns |
|---|---|---|---|---|---|
| 01 | Daily Temperatures | MEDIUM | 100.0 | 67% | Array · Stack · Monotonic Stack |
Frequencies derived from public community-tagged interview reports. Click a row to view on LeetCode.
You have a week, maybe less. You can't out-grind the list above. StealthCoder runs invisibly during the actual Airwallex OA. The proctor cannot see it. Screen share cannot detect it. Built by an Amazon engineer who used it to pass JPMorgan's OA and system design loop.
Get StealthCoder- array1 · 100%
- stack1 · 100%
- monotonic stack1 · 100%
The single data point is Daily Temperatures, a classic monotonic-stack problem where you scan an array and track the next greater element. It tests whether you understand stack mechanics and how to optimize from a naive O(n2) scan to O(n) with auxiliary space. The topic distribution shows array and stack are weighted equally, but the monotonic-stack tag is what matters most. This isn't a breadth play. It's a depth play on one specific pattern. Drill monotonic stacks until you can code it without thinking, because that's likely what you'll see. If you hit the assessment and your stack implementation stutters, StealthCoder fills the gap in seconds.
Companies with similar patterns
If you prepped for Airwallex, these companies recycle ~60% of the same topics.
You've seen the list.
Now make sure you pass Airwallex.
Memorizing every problem above in a week is a fantasy. StealthCoder is the hedge: an AI overlay that's invisible during screen share. It reads the problem on screen and surfaces a working solution in under 2 seconds. Built by an Amazon engineer who used it to pass JPMorgan's OA and system design loop. Works on HackerRank, CodeSignal, CoderPad, and Karat.
Airwallex interview FAQ
How many monotonic-stack problems should I solve before the Airwallex OA?+
At least 5 to 7 solid ones. The reported problem is Daily Temperatures, a textbook monotonic-stack case. Once you've built stacks for next-greater-element, previous-smaller-element, and similar patterns, you'll recognize the shape instantly. Airwallex isn't asking for novelty here, just speed and correctness.
Is Daily Temperatures enough to prepare for this assessment?+
It's the only problem on record, so yes and no. Solve it multiple times until you can write it in under 5 minutes without hints. But also solve 2 to 3 related monotonic-stack problems so you understand the underlying pattern, not just the specific problem. That familiarity is what carries you if the wording shifts slightly.
Should I focus on arrays or stacks first for Airwallex?+
Stacks, specifically monotonic stacks. The array context is secondary. Your preparation should center on building confidence with stack operations, iteration order, and how to manage indices. Arrays are the input format, not the conceptual focus. Stack mastery is what closes the gap between failure and hire.
What if I blank on the monotonic-stack pattern during the actual assessment?+
That's why StealthCoder exists. You'll be screen-sharing the assessment, the proctor won't see the overlay, and StealthCoder reads the problem off your screen and surfaces a working solution in seconds. You paste, submit, and move on. It's the invisible safety net for the exact moment you need it most.
Is medium difficulty the right expectation for Airwallex's OA?+
Yes, based on available data. Daily Temperatures is medium, which is fair for a timed online assessment. It's not a trivial problem, but it's not a leetcode hard either. Focus on clean, readable code that solves it in one pass. That's the bar.