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Added 6 mins ago
IG
Security Consultant
IMCS Group
ON · Ontario, Canada
- Contract
We are seeking a Security GenAI Security and NIST Framework Consultant to lead AI security assessments, evaluate AI/GenAI security risks, and provide strategic guidance on AI governance,…
Added 6 mins ago
RI
AI & Cloud Resiliency Architect
Raas Infotek
Toronto, ON · Scarborough, ON
- Contract
We are looking for an AI & Cloud Resiliency Architect to lead the design of scalable, highly available, and resilient cloud and AI solutions.
Added 6 mins ago
O
Sr. Software Developer
OpenText
Richmond Hill, ON
- Full-time
Serve as a technical lead, recognized for growing domain expertise, embracing change, and navigating ambiguity with resiliency, while fostering the development of less experienced team…
Added 6 mins ago
RD
Senior DevOps Engineer (Azure Infrastructure & Platform)
Randstad Digital
Toronto, ON · Greater Toronto Area, Canada
- Full-time
Unlike typical DevOps positions focused solely on writing CI/CD pipelines, this is a true Cloud Infrastructure & Platform Engineering role. You will report directly to the Lead Cloud…
Added 6 mins ago
D
Senior SDET / Quality Engineering Lead/Architect
Droisys
Brampton, ON
- Contract
…ideal candidate will have strong experience in architecting cloud-native test automation frameworks, performance engineering, and CI/CD quality gates and a proven ability to drive global…
Added 6 mins ago
MS
DevOps Manager
Motorola Solutions
Vancouver, BC · BC · British Columbia,CAN Offsite
- Full-time
Motorola Solution’s Video Division is defining the future of the security industry through innovative end-to-end-solutions. We’re changing the landscape of the surveillance industry through…
Added 6 mins ago
MT
DevOps & Security Engineer
Martello Technologies
ON · Kanata, Ontario
- Full-time
As our DevOps & Security Engineer, you’ll own how Vantage DX and MPA are built, deployed, and secured. That means running the CI/CD pipelines, hardening our AWS and Azure environments, and…
Added 21 mins ago
FC
Senior DevSecOps Engineer
Fintel Connect
Vancouver, BC
- Full-time
As a Senior DevSecOps Engineer, you will lead the implementation and continuous improvement of cloud security, infrastructure automation, platform reliability, and DevSecOps practices…
Added 36 mins ago
Services and Solutions - Sales Executive
Insight Enterprises, Inc.
Toronto, ON
The Client Solutions Lead (CSL) is an expander role responsible for growing Insight’s Services footprint within assigned districts and executing the district Services plan. Partnering with…
Added 51 mins ago
K
Software Engineer in Test
Kelly
Mississauga, ON
- Contract
Role Overview: Senior SDET / Quality Engineering Architect to lead quality engineering strategy for high-throughput, low-latency trading platforms. The role involves designing scalable…
Added 51 mins ago
T
Security Manager
TERAGO
Toronto, ON · Greater Toronto Area, Canada
- Full-time
Lead security monitoring, detection, triage, and response across cloud, identity, networks, endpoints, servers, and SaaS environments.
Added 51 mins ago
PC
Senior Software Development Engineer in Test (SDET) / Quality Engineering Architect
Pyramid Consulting, Inc
Mississauga, ON
- $70 to $79 CAD / hour
- Contract
Design and maintain next-generation, cloud-native test automation frameworks using Core Java and BDD/TDD principles.
Added 51 mins ago
KR
AI Architect
KTek Resourcing
Toronto, ON · Scarborough, ON
- Contract
We are looking for an AI & Cloud Resiliency Architect to lead the design of scalable, highly available, and resilient cloud and AI solutions.
Added 51 mins ago
T
Frontend React DEVELOPER || Canada
TestingXperts
Toronto, ON
- Contract
Awareness of frontend security risks such as XSS and CSRF.
Added 51 mins ago
T
Director of Software Engineering
TEEMA
Vaughan, ON
- $230,000 to $250,000 CAD / year
- Full-time
We are looking for an experienced Director of Software Engineering to lead high-performing engineering teams and drive the development of innovative, cloud-based networking and security…
Added 51 mins ago
KR
AI & Cloud Resiliency Architect
KTek Resourcing
Toronto, ON · Greater Toronto Area, Canada
- Contract
We are looking for an AI & Cloud Resiliency Architect to lead the design of scalable, highly available, and resilient cloud and AI solutions.
Added 51 mins ago
1
Senior GTM Program Manager
1Password
Remote, Canada
- Full-time
- Remote
1Password is growing. We’ve surpassed $500M in ARR and we’re continuing to accelerate, earning a spot on the Forbes Cloud 100 for four years in a row and teaming up with iconic partners…
Added 1 hour ago
EC
GEN Ai Developer
Experis Canada
Toronto, ON
- Contract
Lead workshops and train development teams on GenAI tools and best practices.
Added 1 hour ago
C
AI Architect-Governance & Delivery Lead
CGI
Toronto, ON
- Full-time
The AI Governance & Delivery Lead defines and operationalizes the AI delivery model for the program and provides technical architecture leadership for enterprise AI solutions. The role…
Added 1 hour ago
AI
Senior Azure SQL DBA – SQL Server, Performance Tuning & Cloud Database Administration
Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!
Montreal, QC
- Full-time
Lead performance diagnostics and tuning using Query Store, execution plans, Dynamic Management Views, Extended Events, wait statistics, PerfMon, SQL Profiler, and Azure monitoring.
Added 1 hour ago
QT
L3 MSSQL and Azure DBA(Need local candidate to Montreal, QC)
Q1 Technologies, Inc.
Montreal, QC
- $110,000 to $120,000 CAD / year
- Full-time
Lead performance diagnostics and tuning using Query Store, execution plans, Dynamic Management Views, Extended Events, wait statistics, PerfMon, SQL Profiler, and Azure monitoring.
Added 1 hour ago
TT
Salesforce Functional Designer
Tamanna Technology
Toronto, ON · Greater Toronto Area, Canada
- Contract
Collaborate with the Product owner and functional Lead to refine the product backlog, translate business needs into detailed user stories and define acceptance criteria
Added 1 hour ago
AI
SENIOR JAVA DEVELOPER – SPRING BOOT, MICROSERVICES & REST APIs
Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!
Mississauga, ON
- Full-time
Develop RESTful APIs and microservices using Spring Boot and Spring Cloud.
Added 1 hour ago
T
Software Engineer III
TD
Toronto, ON
- Full-time
As a lead software engineer, you are accountable for shaping and delivering end-to-end solutions for enterprise-grade platforms and complex initiatives. You set technical direction, define…
Added 1 hour ago
T
Software Engineer II
TD
Toronto, ON
- Full-time
…services. You contribute to solutions that operate across diverse cloud environments, applying practical knowledge of cloud infrastructure, deployment patterns and scalable engineering…

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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