Senior Data Scientist

Unity

Senior Data Scientist leading experimentation and optimization in Unity’s global advertising ecosystem. Bridging statistical methodology with engineering for high-velocity innovation.

Posted 4/13/2026full-timeRemote • 🇨🇦 CanadaSenior💰 CA$172,400 - CA$215,500 per yearWebsite

Tech Stack

Tools & technologies

BigQueryPythonScalaSpark

About the role

Key responsibilities & impact

Lead the implementation of variance reduction (CUPED) and sequential testing to increase platform sensitivity and speed.
Architect and deploy interleaving frameworks to rapidly assess ranking model performance in real-time.
Design methodologies to account for finite advertiser budgets and prevent experimental groups from cannibalizing each other's spend.
Research and validate surrogate metrics that correlate highly with long-term user retention and value.
Build the statistical foundations for automated pipelines that autonomously test and select optimal features and hyperparameters.
Serve as the lead subject matter expert on experimentation for ML, Product, and Engineering teams.

Requirements

What you’ll need

8+ years of experience in Data Science or Applied Research, specifically within Ad Tech, Marketplaces, or high-scale experimentation platforms.
An MS or PhD in a quantitative field (Statistics, Economics, Computer Science, Operations Research, or equivalent).
Deep expertise in causal inference, experimental design, and frequentist/Bayesian statistics, with a proven track record of applying these to high-volume, real-time data.
Strong programming skills in Python or Scala, and experience with large-scale data processing frameworks like Spark, Snowflake, or BigQuery.
Practical experience implementing advanced testing methodologies like CUPED, interleaving, or switchback testing in production environments.
Ability to translate complex statistical concepts into clear product roadmaps and mentor engineering teams on experimental rigor.

Benefits

Comp & perks

Comprehensive health, life, and disability insurance
Commute subsidy
Employee stock ownership
Competitive retirement/pension plans
Generous vacation and personal days
Support for new parents through leave and family-care programs
Office food snacks
Mental Health and Wellbeing programs and support
Employee Resource Groups
Global Employee Assistance Program
Training and development programs
Volunteering and donation matching program

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

variance reductionCUPEDsequential testingexperimental designcausal inferencefrequentist statisticsBayesian statisticsPythonScalalarge-scale data processing

Soft Skills

mentoringcommunicationtranslating complex conceptsleadership

Certifications

MSPhD