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Added 13 mins ago
P&
Systems & Logistics Analyst
Parrish & Heimbecker, Limited
Cambridge, ON
- Full-time
Proficiency with Descartes TMS and data analysis tools (Excel, SQL, etc.).
Added 13 mins ago
M
Marketing Data Analyst
Mindlance
Toronto, ON
- $35 to $40 CAD / hour
- Contract
Develop dashboards, reports, and KPI tracking using SQL and BI tools
Added 13 mins ago
X
Senior Accountant
Xanadu
Toronto, ON
- Full-time
Added 28 mins ago
K
Software Engineer in Test
Kelly
Mississauga, ON
- Contract
Architect API, contract, and data validation testing using REST Assured, Pact, WireMock, SQL, and NoSQL.
Added 28 mins ago
A
Product Owner - Asset Management, Temporary
Aviso
Toronto, ON
- Full-time
High digital savviness and comfort with a range of software, including MS Office Suite, SQL/Oracle database, Power BI, Smartsheet, Azure DevOPS, Google Analytics, MIRO, and Figma
Added 28 mins ago
B
Database Administrator
Bevertec
Toronto, ON · Greater Toronto Area, Canada
- Contract
Job Title: Database Administrator – Cloud, SQL & Enterprise Systems
Added 28 mins ago
PC
Senior Software Development Engineer in Test (SDET) / Quality Engineering Architect
Pyramid Consulting, Inc
Mississauga, ON
- $70 to $79 CAD / hour
- Contract
Strong query formulation skills across SQL (Oracle, PostgreSQL) and NoSQL (MongoDB).
Added 28 mins ago
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Software Engineer
Kelly
Mississauga, ON
- Contract
Optimize database performance across Oracle, MS SQL Server, and MongoDB.
Added 28 mins ago
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Python Developer -Forward Deployed, Pyspark
Apptoza Inc.
Toronto, ON
- Contract
Role: Python Developer -Forward Deployed, Pyspark
Added 28 mins ago
AS
Backend Developer
Axelon Services Corporation
Montreal, QC
- $65.52 USD / hour
- Other
Working knowledge of databases, including design and SQL proficiency.
Added 28 mins ago
S
Software Engineer (Unpaid)
Spawn
Canada
- Temporary
…has a mature codebase and interesting technologies: Redis, SQL, AWS (S3, Cloudfront), Swift, Java Spring. I can say that having this on my resume helped me land iOS interviews with Apple,…
Added 28 mins ago
AG
Senior Analyst, Marketing Science
Adelphi Group
Toronto, ON
- Full-time
…building pivot tables in Excel or reaching similar outcomes in…
Added 28 mins ago
Clerk Grade 2, Building Safety Systems
Toronto Community Housing or Toronto Seniors Housing
Toronto, ON
Experience utilizing a variety of computerized PC office systems with demonstrated ability in various software products including MS Office and SQL.
Added 43 mins ago
AI
RPA UiPath Developer..
Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!
Toronto, ON
- Full-time
We are seeking an experienced Senior RPA Developer with IT experience, including extensive hands-on expertise in Robotic Process Automation (RPA) using UiPath. The ideal candidate will be…
Added 43 mins ago
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Data Integration Engineer
TekRek
Canada
- Contract
Hands-on SQL, plus experience working with APIs, reading logs, and promoting changes through structured test and release environments. Dremio experience is a plus.
Added 43 mins ago
AI
Forward Deployed Engineer (Python/Pyspark Developer)
Apptoza Inc.
Toronto, ON
- Contract
Profile unfamiliar client data using Python, pandas, PySpark, and SQL to assess coverage, quality, volumes, distributions, edge cases, and feasibility.
Added 43 mins ago
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Loan IQ BA at Mississauga, CA (Hybrid)
Zodiac Solutions, Inc
Mississauga, ON
- Contract
Basic SQL programming experience – needed to execute some SQLs for the testing purposes.
Added 43 mins ago
JG
Technical Architect / Senior Developer – RPA & Automation
J&M Group
Toronto, ON
- Full-time
We are seeking a Technical Architect / Senior Developer RPA & Automation to design, develop, maintain, and enhance enterprise automation solutions. The role will focus on UiPath, Microsoft…
Added 43 mins ago
SS
Java Developer
Staffmax Staffing & Recruiting
Mississauga, ON
- $120,000 to $130,000 CAD / year
- Full-time
We are looking for an experienced Java Developer to design, develop, and maintain scalable, high-performance microservices and REST APIs. The ideal candidate will have strong hands-on…
Added 43 mins ago
CO
Temporary Solutions Integration Specialist (up to 8 months)
City of Saint John
Saint John, NB
- Temporary
Networking, such as Active Directory, M365 administration, SQL server management, and/or Exchange)
Added 43 mins ago
BG
Software Developer
Brandt Group of Companies
Regina, SK
- Full-time
The Software Developer is responsible for developing, maintaining, and modernizing web, desktop, and legacy applications based on defined business requirements. This role collaborates with…
Added 43 mins ago
FC
Actuarial Associate - Pricing
First Canadian Financial Group
Sherwood Park, AB
- Full-time
Advanced proficiency in Excel and at least one analytical or programming language such as SQL, R, Python, SAS, or VBA
Added 43 mins ago
AI
SENIOR JAVA DEVELOPER – SPRING BOOT, MICROSERVICES, KAFKA & MONGODB
Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!
Mississauga, ON
- Full-time
Develop and optimize SQL queries (E2 level) for transactional and reporting use cases.
Added 58 mins ago
UO
Programmer Analyst II
University of British Columbia
Vancouver, BC · UBCV | The Leonard S. Klinck Building (LSK)
- $8,810.92 to $13,202.5 CAD / month
- Full-time
Added 58 mins ago
UO
Programmer Analyst II
University of British Columbia
Vancouver, BC · UBCV | The Leonard S. Klinck Building (LSK)
- $8,810.92 to $13,202.5 CAD / month
- Full-time

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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