Data Scientist

2 weeks ago

Toronto, Ontario, Canada Yochana Full time

Position Name – Data Scientist

Type of hiring – Subcon

Duration – 3 months contract

Location – Toronto, ON M5J 2H7 (Onsite Hybrid)

Job Description:

We are accelerating two high-priority fraud detection and prevention initiatives. We need a hands-on Data Scientist to support data preparation, unsupervised ML and analysis.

What You'll Do

  • Prepare and clean datasets from internal and partner sources for Machine Learning models
  • Run and support unsupervised models (e.g., Isolation Forest, K-Means, DBSCAN) on baseline and partner data for anomaly detection and behavioural clustering
  • Compare results to current integrity scoring approaches
  • Build clear visualizations and concise summaries of baseline behaviours, clusters, and fraud patterns for executive and partner consumption
  • Consolidate findings across univariate/bivariate/multivariate and ML analyses into structured outputs (slides, notes, notebooks)
  • Document assumptions, transformations, and model configurations to ensure reproducibility

Must-Have Skills & Experience

  • Strong Python (Pyspark, pandas, scikit-learn) and SQL skills
  • Hands-on experience with Data Engineering on AWS
  • Hands-on experience with clustering and anomaly detection on real-world data
  • Comfortable working in a fast-paced, time-boxed project environment

  • Data Scientist

    2 weeks ago

    Toronto, Ontario, Canada Source Code Full time

    Data Scientist (Azure, Python, and SQL) Toronto, ON. Fully Remote 1-year contract (with the possibility of extension)The ideal candidate is comfortable working with analyzing large data sets to find opportunities to improve product performance and increase value to customers. In order to do that, it's important that this person knows how to communicate...

  • Data Scientist

    2 weeks ago

    Toronto, Ontario, Canada VySystems Full time

    Role: Data ScientistLocation: NYC, NY | Toronto, ONDuration: Long TermSpecification:We're looking for a contractor who sits between a Business Analyst and a Junior Data Scientist, focused on product analytics, financial analysis, and ad-hoc data reporting for card programs.This is not a Data Engineer or senior DS role; we need someone who is strong in SQL,...

  • Data Scientist

    2 weeks ago

    Toronto, Ontario, Canada NextStars Full time

    Company DescriptionNextStars is a Canadian accelerator with a global vision, dedicated to empowering local and newcomer entrepreneurs to build innovative, climate-conscious businesses. Leveraging Canada as a launchpad, NextStars provides comprehensive tools, resources, mentorship, and investor connections to help startups define their purpose, secure...

  • Data Scientist

    2 weeks ago

    Toronto, Ontario, Canada Ample Insight Inc. Full time

    Company Description You will join a world-class team of engineers and data scientists from Facebook, Uber, Amazon and Google. We are a fast growing consulting firm based in Toronto with clients ranging from leading startups building impactful technologies to Fortune 500 companies looking to scale their engineering and data capabilities. Job Description We...

  • Data Scientist

    2 weeks ago

    Toronto, Ontario, Canada Ample Insight Full time

    Company DescriptionYou will join a world-class team of engineers and data scientists from Facebook, Uber, Amazon and Google. We are a fast growing consulting firm based in Toronto with clients ranging from leading startups building impactful technologies to Fortune 500 companies looking to scale their engineering and data capabilities.Job DescriptionWe are...

  • Junior Data Scientist

    5 days ago

    Toronto, Ontario, Canada hackajob Full time

    hackajob*is collaborating withmThreeto connect them with exceptional tech professionals for this role.*Junior Data Scientist**The Wiley Edge banking team is currently seeking a Data Scientist to work across the Front Office Trading, Risk & Regulatory Compliance Trade Analytics group, using Machine Learning and Data Analytics techniques to design and develop...

  • Data Scientist

    1 week ago

    Toronto, Ontario, Canada Stripe Full time

    About StripeStripe is a financial infrastructure platform for businesses. Millions of companies—from the world's largest enterprises to the most ambitious startups—use Stripe to accept payments, grow their revenue, and accelerate new business opportunities. Our mission is to increase the GDP of the internet, and we have a staggering amount of work...

  • Data Scientist

    2 weeks ago

    Toronto, Ontario, Canada Infotek Consulting Inc. Full time

    Senior Data Scientist / Applied AI ScientistWe are seeking a highly skilled Data Scientist with a strong computer science foundation to join a rapidly growing team. This role is ideal for someone who thrives on end-to-end ownership—designing, building, deploying, and continuously improving production-grade machine learning and AI solutions. You'll work in...

  • Data Scientist

    2 weeks ago

    Toronto, Ontario, Canada Harry Rosen Full time

    It's fun to work in a company where people truly BELIEVE in what they're doingWe're committed to bringing passion and customer focus to the business.Data ScientistFull-Time PermanentReporting to Director of AnalyticsToronto, OntarioHarry Rosen Inc. Central Office (77 Bloor St. West)Hybrid work environmentAs a leading luxury menswear retailer operating across...

  • Senior Data Scientist

    5 days ago

    Toronto, Ontario, Canada Johnson & Johnson Full time

    At Johnson & Johnson, we believe health is everything. Our strength in healthcare innovation empowers us to build a world where complex diseases are prevented, treated, and cured, where treatments are smarter and less invasive, and solutions are personal. Through our expertise in Innovative Medicine and MedTech, we are uniquely positioned to...