Principal Data Scientist, Ads
Core
Drive the strategic application of advanced quantitative methods to optimize Reddit's Ads marketplace and advance advertiser intelligence.
Role type
Principal Data Scientist (Ads)
Builds
Foundational data science solutions, measurement frameworks, and predictive/causal models for the advertising platform.
Domain
Internet / Digital Advertising / Marketplace Economics
Deliverable
production ML models | dashboards & analysis
Required skills
Statistics, Econometrics, Machine Learning, Causal Inference, Economic Modeling, Experimental Design, A/B Testing, Python, SQL, Auctioning/Bidding, Ad Creative Evaluation, Full-funnel modeling
Preferred skills
Large-scale statistical programming, Optimization techniques, Cross-functional leadership
Responsibilities
Define long-term evolution of core Ads Data Science solutions; Identify gaps in platform/auction/targeting models; Own complex problem domains like advertiser LTV; Establish scientific standards for modeling and experimentation; Act as domain authority for behavioral data and marketplace economics; Translate ambiguity into business metrics and outcomes; Mentor senior data scientists and influence technical direction.
Seniority
Principal, strategy & mentorship
