- We are looking for a Senior-Level Data Scientist to join our Fraud Detection team — someone equally comfortable building production ML models and getting hands-on with individual fraud cases

- This is a dual-track role: you’ll develop the machine learning systems that catch fraud at scale, and you’ll personally lead investigations into how specific fraud attacks happened, reconstructing attacker behavior and turning case-level findings into trend reports and detection improvements

- This is a outstanding opportunity to grow your skills in a fast-paced, data-driven environment while making a real, visible impact in the fight against fraud

- Machine Learning & Model Development

- End-to-End Model Development: Lead the full lifecycle of fraud detection features and models, from ideation and data exploration to prototyping, productionizing, and monitoring

- Advanced Feature Engineering: Develop highly predictive features from complex, large-scale, multi-dimensional data, including user behavior, device intelligence, network graphs, and transaction records

- Large-Scale Data Processing:



Work with massive, noisy, and imbalanced datasets (billions of events) using tools like Spark, SQL, and our proprietary AI platform

- Agentic AI & Automation: Leverage agentic AI to automate analytic pipelines and develop reusable skill tools that accelerate fraud investigation, feature generation, and reporting workflows

- Live Fraud Investigation & Reporting

- Lead investigations into complex fraud cases across identities, accounts, devices, and transaction surfaces. Reconstruct attacker sequences and hypothesize actor intent and tooling

- Produce clear, evidence-backed technical reports and case studies for product, engineering, operations, legal, and executive stakeholders

- Generate fraud trend reports for customers, synthesizing case-level findings and aggregate data into narratives customers can act on

Benefits

- Stock Options

- Commuter Passes

- Paid Time Off

- Catered Lunch and Dinner

- Team and Company Outings

📌 Senior Data Scientist (Fraud Detection) (Toronto)
🏢 DataVisor
📍 Toronto