← All roles

Staff Data Scientist - Ads Measurement, Signals, Privacy

Reddit· Data Science
Apply on company site
Hybrid (Ontario, Canada)full-timePosted 2mo ago

About the role

Senior-level data science role focused on measurement, identity, and signal quality within Reddit's Ads organization. High autonomy to influence strategy, set technical bar, and lead cross-functional initiatives in advertising measurement, identity resolution, and signal design.

Responsibilities

  • Design the Future of Ads Identity: Develop/employ probabilistic models for identity resolution. Design the methodology that links on-platform and off-platform actions to maximize addressability while honoring privacy.
  • Advance Lift Methodologies & Experimentation: Own the statistical rigor behind Reddit’s Brand and Conversion Lift products. Innovate experimental design and develop infrastructure that supports large-scale, high-velocity, low-bias testing for advertisers.
  • Maximize Signal for Predictive Performance: Define the strategy for new signal sources. Quantify the value of signals and incorporate them into predictive models to improve bidding efficiency and ROAS.
  • Define Ground Truth & Evaluation Frameworks: Solve validation challenges for identity and measurement. Design objective functions and truth sets to train models and measure incremental impact of the identity graph.
  • Lead Through Cross-Functional and Technical Influence: Collaborate with engineering, product, and sales to translate insights into action and mentor others to raise modeling, experimentation, and measurement standards.

Qualifications

  • Advanced degree (Master's or Ph.D.) in Statistics, Mathematics, Physics, Economics, or Operations Research
  • For M.S. holders: 10+ years of industry experience in applied science or data science roles
  • For Ph.D. holders: 6+ years of industry experience in applied science or data science roles
  • Deep understanding of the ads ecosystem
  • Expertise in at least one: Measurement & Experimentation at Scale (lift/attribution), Identity Graph Creation & Resolution Methodology/Infrastructure, Predictive Modeling with Signal Loss
  • Advanced proficiency in statistical programming (Python or R) and SQL
  • Experience with machine learning or optimization techniques
  • Strong understanding of experimental design, causal inference, or A/B testing methodologies
  • Exceptional problem-solving and communication skills with impact on product/engineering partners
  • Experience in fast-paced, ambiguous environments with cross-functional teams

Skills

Required:StatisticsExperimentation & Causal InferenceIdentity ResolutionPredictive ModelingPython or RSQL

Benefits

  • Comprehensive Healthcare Benefits and Income Replacement Programs
  • 401k with Employer Match
  • Global Benefit programs for lifestyle, workspace, professional development, caregiving support
  • Family Planning Support
  • Gender-Affirming Care
  • Mental Health & Coaching Benefits
  • Flexible Vacation & Paid Volunteer Time Off
  • Generous Paid Parental Leave
Last updated Oct 21, 2026. Interested? Apply on the company site.
Reddit logo

About Reddit

The heart of the internet

Reddit is where millions of people gather for conversations about the things they care about, in over 100,000 subreddit communities.

social mediacommunityforumnewsentertainmentdiscussion
Company profileWebsite

More open roles at Reddit