Airwallex interview questions

Showing 1–19 of 19 results

• AI-Assisted Build: Tic-Tac-Toe Logic Grown Into a Frontend and Backend AppMedium

  An AI-assisted coding exercise: build a two-player Tic-Tac-Toe game, then grow it into an application with a frontend and a backend while using AI tools. Tests correct game rules, server-side validation, API design, and the ability to understand, debug and verify AI-generated code.

  AirwallexBackend EngineerSoftware Engineering FundamentalsOther
• Bar-Raiser Project Deep Dive: Defending Decisions, Trade-offs, Impact and LessonsMedium

  A bar-raiser round that deep-dives into one of your past projects, probing each decision through layers of why, the trade-offs accepted, the measured impact and the lessons learned. Tests ownership, judgment, honest reflection and consistency under repeated follow-up questions.

  AirwallexBackend EngineerBehavioral & LeadershipOnsite
• Compute Moderation View MetricsMedium

  An Airwallex Data Scientist onsite SQL question on content-moderation analytics. You write three queries over a per-day view table and a one-to-many post/violation-type policy-score table: distinct posts with 10+ views in the last 7 days, Nudity view prevalence over the last 30 days, and a monthly violation-type distribution. The core challenge is windowed aggregation plus avoiding view double-counting across violation types.

  AirwallexData ScientistData Manipulation (SQL/Python)Onsite
• Design a High-Demand Ticketing SystemMedium

  Design a ticketing system for high-demand events. Connect requirements and APIs to data modeling, consistency, scaling, failure recovery, observability, and the important design trade-offs.

  AirwallexSoftware EngineerSystem DesignTechnical Screen
• Design a Hotel Booking Platform Down to the SQL Tables and Booking TransactionMedium

  Design a hotel booking platform where travelers search by destination and dates and book rooms, down to the SQL tables and the booking transaction. Tests schema design with real constraints, preventing double booking under concurrency, payment holds and expiry, and a search path that scales separately.

  AirwallexBackend EngineerSystem DesignOther
• Design a Large-File Analysis Report SystemMedium

  Tests system design skills in architecting a secure, multi-tenant pipeline for large file ingestion and asynchronous batch analytics with resumable uploads and idempotent job processing.

  AirwallexSoftware EngineerSystem DesignTechnical Screen
• Design a Reusable React Autocomplete Input: API, Portals, Debounce and CachingMedium

  Design a reusable autocomplete search input for a React application on top of an existing search API. The discussion covers the API contract with pagination and limits, the component and portal architecture, throttling versus debouncing, client-side result caching strategies, and the public props and exports.

  AirwallexFrontend EngineerSystem DesignTechnical Screen
• Diagnose a Structural Break in KYC Submission RateMedium

  Tests your ability to systematically diagnose sudden metric shifts, secular downward trends, and seasonality in a fintech onboarding funnel using structured hypothesis testing and slice analysis.

  AirwallexData ScientistAnalytics & ExperimentationTechnical Screen
• Diagnose a dip in approval/conversion rateMedium

  This Analytics & Experimentation prompt evaluates time-series diagnostics, ratio decomposition (numerator/denominator and traffic mix), segmentation and data-quality triage, and causal inference skills at a staff-level applied analytics abstraction.

  AirwallexData ScientistAnalytics & ExperimentationOnsite
• Diagnose conversion-rate time series and CTA swapEasy

  This question evaluates a data scientist's competency in time-series diagnosis, conversion-rate decomposition, causal inference, and A/B experiment design within the Analytics & Experimentation category of Data Science.

  AirwallexData ScientistAnalytics & ExperimentationOnsite
• Find All Index Quadruples Summing to a Target Without Losing PositionsMedium

  Given an integer array and a target, return every quadruple of original indices i < j < k < l whose values sum to the target, in lexicographic order. Tests an efficient search beyond brute force, index-based deduplication, overflow awareness and handling of repeated values without losing positions.

  AirwallexSoftware EngineerCoding & AlgorithmsTechnical Screen
• How You Use AI Tools at Work and When You Would Delegate a Task to an AgentMedium

  Behavioral question asking a software engineer how they use AI tools in daily work and whether they would delegate a task to an autonomous agent that picks its own tools. It tests concrete use cases, clear boundaries, verification habits, permission safeguards, and ownership of shipped code.

  AirwallexSoftware EngineerBehavioral & LeadershipTechnical Screen
• How do you resolve partner conflict?Medium

  This question evaluates a data scientist's cross-functional collaboration, stakeholder management, conflict resolution, influencing without formal authority, and data-driven communication skills.

  AirwallexData ScientistBehavioral & LeadershipOnsite
• How would you measure billboard impact?Medium

  This problem tests your ability to design a quasi-experimental framework for measuring the offline impact of an OOH (Out-of-Home) advertising campaign on digital conversion metrics.

  AirwallexData ScientistAnalytics & ExperimentationOnsite
• How would you test swapping two CTA buttons?Medium

  This question evaluates A/B test design, causal inference, funnel metric selection and diagnostic/guardrail thinking within Analytics & Experimentation for a Data Scientist role, and is commonly asked to gauge the ability to reason about user behavior, conversion trade-offs, and risk management in sensitive domains like fintech.

  AirwallexData ScientistAnalytics & ExperimentationOnsite
• Investigate Harassment Surge and MitigationMedium

  An Airwallex Data Scientist onsite analytics question: a monthly moderation report shows the Harassment violation type spiking, and you must decide whether the surge is real or a measurement artifact, then propose and test mitigations. It probes diagnostic analytics, prevalence-metric design, denominator effects, Simpson's paradox, selection bias, label drift, model calibration, causal inference (ITS/DiD), and experiment design with guardrails.

  AirwallexData ScientistAnalytics & ExperimentationOnsite
• Largest Square of OnesMedium

  Tests dynamic programming on a 2D grid, specifically optimizing state transitions to achieve O(n) auxiliary space.

  AirwallexSoftware EngineerCoding & AlgorithmsTechnical Screen
• Maximum Triangle Path Sum, Overall and Through a Required CellMedium

  Given an integer triangle where each step moves to one of the two adjacent cells in the next row, return the maximum top-to-bottom path sum and the maximum sum among paths forced through a given cell. Tests dynamic programming on a triangle and adapting it to a constrained follow-up.

  AirwallexBackend EngineerCoding & AlgorithmsOther
• Name-Keyed Async Task Scheduler with Sequential Lanes, Cancel and Clear by NameMedium

  Implement a JavaScript task scheduler for async functions where tasks sharing a name run strictly in order while tasks with different names run concurrently. Follow-ups add cancelling the running task for a name and clearing every running and queued task by name, testing promise handling, race conditions and API design.

  AirwallexFrontend EngineerSoftware Engineering FundamentalsTechnical Screen