[Hiring] Staff, Fraud Countermeasures @Wealthsimple Technologies

Role Description

Card fraud is one of the highest-stakes problems at Wealthsimple, and this role owns the strategy for it. You'll set direction for how we prevent application, transaction and account takeover fraud across our card products, and you'll do it independently, with real accountability for the outcome. This is a Staff individual contributor role with manager-level impact: you'll lead through expertise and influence, not direct reports. It's open to candidates in any timezone in Canada.

• Own fraud strategy and execution across application, transaction and account takeover fraud for Wealthsimple's card products.
• Manage the card fraud loss budget as our volumes grow, and guard against the fraud attacks that can blow a budget up.
• Design, backtest, ship and tune detection rules, and set decision thresholds on ML risk scores.
• Weigh fraud losses prevented against operational cost and client experience before you recommend an approach.
• Partner with Product and Engineering to build controls that stop fraud without blocking legitimate clients, like step-up authentication instead of a hard decline.
• Guide the data scientists and analytics developers in your pod, and mentor junior teammates on strategy, rule building and problem-solving.

Qualifications

• 6+ years of experience in fraud prevention, including 3+ years working directly on card fraud (prepaid or credit) at an issuer, fintech or payments platform.
• Hands-on ownership of card fraud strategy across application, transaction and account takeover fraud.
• Advanced SQL. You write complex queries against transaction-level data yourself, without waiting for an analyst to pull it.
• A track record of building, backtesting, shipping and tuning fraud rules, and explaining the precision, catch rate and approval rate impact of each.
• Experience quantifying fraud savings against operational and client experience costs to make a clear recommendation.
• Experience using AI tools in your daily work, and examples of where they changed your output.
• The ability to influence Product, Engineering, credit risk, operations and external vendors toward a decision without direct authority.
• Clear communication with technical and non-technical audiences, including senior leadership.
• Nice to have: Knowledge of Visa and Mastercard network rules, dispute processes and chargeback rails.

Requirements

• You set direction on your own and take ownership over outcomes for your space, from fighting fraud attacks to minimizing client friction.
• You make decisions with numbers behind them, and you're honest about what the numbers can't tell you.
• You lead through influence. You can get a roadmap conversation to go your way by rallying others around shared objectives.
• You use AI to aide in your workflow, and know when to question its outputs.
• You share what you know, and you make the people around you sharper.

Benefits

• 🌸 Top-tier health benefits and life insurance
• 📈 Long-term group savings with employer match, through Wealthsimple for Business
• 🌴 20 vacation days, 4 wellness days, and unlimited sick and mental health days per year*
• ✈️ 90 days away: work outside Canada for up to 90 days per year*
• 👥 Employee resource groups, including Rainbow (2SLGBTQ), Women of WS, and Black at WS
• 🌎 We are a hybrid team with over 1,500 employees across North America.