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Added 10 mins ago
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Senior Full Stack Developer
Affinity
BC · British Columbia, Canada
- Contract
On behalf of our client, Affinity is seeking Senior Full Stack Developers.
Added 10 mins ago
MM
Senior Forward Deployed Engineer
Mitchell Martin Inc.
Mississauga, ON
- $73 to $78 CAD / hour
- Other
Join a dynamic team as a Senior Forward Deployed Engineer, working directly with clients in a hybrid setting. This role involves architecting and deploying solutions while engaging with…
Added 10 mins ago
RD
Full Stack Engineer
Randstad Digital
Toronto, ON
- Contract
Added 10 mins ago
AT
Senior Account Manager
AOT Technologies
Canada
- Full-time
Enough technical fluency to talk credibly about software delivery and AI with clients and engineers. You don't need to be a developer.
Added 10 mins ago
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Senior Consultant, ML/AI Engineer, Data & AI
Toast
Vancouver, BC
- $77,000 to $102,000 USD / year
- Full-time
…presence and thousands of professionals across the country, for a Senior Consultant, ML/AI Engineer to join its Data & AI practice in Vancouver. The firm helps some of Canada’s largest…
Added 10 mins ago
MM
Senior Forward Deployed Engineer
Mitchell Martin Inc.
Mississauga, ON
- $62 to $67 CAD / hour
- Other
Senior Forward Deployed Engineer - Mississauga,ON Hybrid - Contract - $62.00-$67.00 Per Hr
Added 10 mins ago
T
Manager, Delivery Lead / Project Manager - Gen AI and Software Delivery
Toast
Montreal, QC
- $103,000 to $150,000 USD / year
- Full-time
…Canada, for a Delivery Lead / Project Manager on its Gen AI and Software Delivery team in Montreal. The team helps major organizations modernize how software is planned, built, tested and…
Added 10 mins ago
NP
Coordinator, Maintenance & Projects
Niagara Parks Commission
Niagara Falls, ON
- Full-time
Prepare capital equipment lists for the Senior Manager’s or Director’s approval.
Added 25 mins ago
Q
Senior Revenue Enablement Specialist, Digital
Quadient
Markham, ON
- $90,000 to $100,000 CAD / year
- Full-time
We are looking for an experienced and results-driven Senior Revenue Enablement Specialist, Digital to join our global Revenue Enablement team.
Added 25 mins ago
Senior Network Development Engineer
NetBrain
Toronto, ON
5–8 years of software development experience, including building automation frameworks or developer-facing tooling
Added 25 mins ago
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Senior Demand Generation Strategist (Remote Canada)
Directive
Remote, Canada
- Full-time
- Remote
…to operate a laptop computer (PC or Mac available), computer software platforms, and other office productivity tools as necessary. Due to the nature of this role, you must be able to remain…
Added 39 mins ago
SG
Junior PM
Software Guidance & Assistance, Inc. (SGA, Inc.)
Mississauga, ON
- Full-time
Software Guidance & Assistance, Inc., (SGA), is searching for a Junior PM for a right to hire assignment with one of our premier financial services clients in Mississauga, ON.
Added 39 mins ago
TS
Senior Associate Strategist (Healthcare Social Scientist)
Throughline Strategy Inc.
Toronto, ON
- $74,000 CAD / year
- Full-time
Experience using at least one qualitative coding software such as MaxQDA, NVivo, Atlas.ti, or Dedoose
Added 39 mins ago
MM
Senior Full Stack Developer – Java/React
Mitchell Martin Inc.
Toronto, ON
- $59 to $64 CAD / hour
- Other
This position involves working in a dynamic technology environment in a hybrid setting. As a senior developer, you will lead key projects and mentor junior team members. The role requires…
Added 39 mins ago
Principal Product Manager - Billing & Platform
Constant Contact
ON
…years. You bring clarity to ambiguous problems. You can guide senior stakeholders toward the right sequence and keep their trust along the…
Added 39 mins ago
Unified Customer Experience - Senior Software Engineer
Questrade Financial Group
Calgary, AB
We’re looking for our next Software Engineer. Could It Be You?
Added 40 mins ago
UO
Programmer Analyst I
University of British Columbia
Vancouver, BC · UBCV | University Services Building (USB)
- $7,158.42 to $10,292.25 CAD / month
- Full-time
…learning activities. The Programmer Analyst I focuses on smaller software modules and system-to-system integrations as well as contributing to larger software systems available throughout…
Added 55 mins ago
PG
AWS SageMaker Engineer
Pacer Group
Toronto, ON
- $50 to $53 CAD / hour
- Contract
Job Title: Senior AWS SageMaker / MLOps Engineer
Added 55 mins ago
D&
Entry-Junior Level - Associate Consultant - Calgary, AB
Dokainish & Company
Calgary, AB
- Full-time
…Entry-Level Associate Consultant, you will work closely with senior consultants and project teams to support project planning, execution, and delivery, while gaining valuable hands-on…
Added 1 hour ago
MM
Senior Software Development Engineer
Mitchell Martin Inc.
Mississauga, ON
- $68 to $78 CAD / hour
- Other
Senior Software Development Engineer - Hybrid - Contract -$68.00-$78.00 Per Hr
Added 1 hour ago
W
Senior Electrical Engineer
Worley
Vancouver, BC
- Full-time
Experience using ETAP, SKM, Microsoft Office, and other relevant engineering design software.
Added 1 hour ago
FR
Lead Software Engineer, Full-Stack Applications - AI Fluent
Fitch Ratings
Toronto, ON
- $180,000 to $220,000 CAD / year
- Full-time
Lead Software Engineer, Full-Stack Applications – AI Fluent
Added 1 hour ago
Q
Senior Revenue Enablement Specialist, Digital
Quadient
Markham, ON
- $90,000 to $100,000 CAD / year
- Full-time
We are looking for an experienced and results-driven Senior Revenue Enablement Specialist, Digital to join our global Revenue Enablement team.
Added 1 hour ago
RB
Senior Director, Data Architecture
Royal Bank of Canada
Toronto, ON
- Full-time
The Senior Director, Data Architecture simplifies and unifies RBC's data architecture across the full lifecycle: manufacturing, distribution, discovery, consumption and governance. They own…
Added 1 hour ago
System Architect - Krembil Centre for Neuroinformatics
CAMH
Toronto, ON
5+ years of senior-level experience in solution, cloud, or systems architecture for medium/large enterprise or data platforms

DataVisor

Senior Data Scientist - Fraud Detection

Toronto, ON, Canada

$120,000 to $150,000 CAD / year · Full-time

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Job details

Pay: $120,000 to $150,000 CAD / year
Job type: Full-time
Apply by: Apr 25, 2027
Posting language: English
Posted: Oct 2, 2026

Original job description

About DataVisor

DataVisor is the world's leading AI-powered Fraud and Risk Platform that delivers the best overall detection coverage in the industry. With an open SaaS platform that supports easy consolidation and enrichment of any data, DataVisor's fraud and anti-money laundering (AML) solutions scale infinitely and enable organizations to act on fast-evolving fraud and money laundering activities in real time. Its patented unsupervised machine learning technology, advanced device intelligence, powerful decision engine, and investigation tools work together to provide significant performance lift from day one. DataVisor's platform is architected to support multiple use cases across different business units flexibly, dramatically lowering total cost of ownership compared to legacy point solutions. DataVisor is recognized as an industry leader and has been adopted by many Fortune 500 companies across the globe.

Our award-winning software platform is powered by a team of world-class experts in big data, machine learning, security, and scalable infrastructure. Our culture is open, positive, collaborative, and results-driven. Come join us!

Position Overview

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

Key Responsibilities

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

Requirements

Qualifications

Master's or PhD in Computer Science, Statistics, Mathematics, or a related quantitative field.

3+ years of applied experience in fraud detection, cybersecurity, or a related adversarial/high-velocity risk domain (fintech, consumer payments, banking, SaaS, marketplace risk, or security research)
Solid understanding of both classic machine learning models (Logistic Regression, Gradient Boosting, etc.)
Hands-on experience with the machine learning lifecycle in a production environment
Investigator mindset: demonstrated skill in pattern synthesis, hypothesis testing, and triaging signal from noise in ambiguous, adversarial cases - not just building and monitoring models
Strong programming skills in Python (must-have) and proficiency with SQL; experience with PySpark is a significant plus
Experience with large-scale data tools (Spark, Hadoop, etc.) and cloud platforms (AWS, GCP, Azure)
Excellent communication skills - able to explain complex, ambiguous, or technical behavior clearly to both technical and non-technical audiences, including customers and executives
Professional proficiency in written and spoken English, with the ability to collaborate effectively in a global, cross-functional team

Benefits

Base salary range: $120,000-$150,000, commensurate with experience
PTO, Stock Options, Health Benefits

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More about this job

Responsibilities

Develop, productionize, and monitor fraud detection models and features using large-scale, complex data, and apply agentic AI to automate analytic and investigation workflows. Lead investigations into fraud cases, reconstruct attacker behavior, and produce evidence-based case studies and customer trend reports.

Requirements

Requires a master's or PhD in a quantitative field and at least three years of applied experience in fraud detection, cybersecurity, or a related adversarial risk domain. Candidates need production machine learning experience, strong Python and SQL skills, familiarity with large-scale data tools and cloud platforms, an investigative mindset, and excellent communication skills.

Skills

Fraud Detection
Machine Learning
Feature Engineering
Fraud Investigation
Python
SQL
PySpark
Apache Spark
Large-Scale Data Processing
Data Analysis
Pattern Recognition
Hypothesis Testing
Agentic AI
Technical Reporting
Cloud Platforms
Communication

Benefits

Paid Time Off
Stock Options
Health Benefits

Visa sponsorship

Not detected in the job text

Keywords

Fraud Detection
Cybersecurity
Machine Learning
Logistic Regression
Gradient Boosting
Python
SQL
PySpark
Apache Spark
Hadoop
AWS
GCP
Azure
Agentic AI
Feature Engineering
Device Intelligence
Network Graphs
Transaction Records
Fraud Investigation
Pattern Synthesis
Hypothesis Testing
Imbalanced Datasets
Large-Scale Data Processing
Production Machine Learning
Risk Management
Fintech
Consumer Payments
Banking
SaaS
Marketplace Risk

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