Staff Data Scientist, Marketing

Reddit is looking for a highly experienced Staff Data Scientist to lead the strategy and technical execution of our Marketing Intelligence efforts. In this role, you will be the primary architect of how we measure and optimize Reddit’s marketing spend. You will focus on two critical flywheels: B2B Marketing (acquiring and retaining advertisers) and B2C Growth (acquiring and engaging new Redditors). This is a high-autonomy, high-impact role where you will set the long-term strategic goals for Reddit’s marketing measurement, influencing senior leadership and defining how we value our brand and performance efforts.

Responsibilities

Set Long-Term Marketing Strategy: Define the 2–3 year technical roadmap for marketing measurement and establish North Star metrics; Optimize Marketing ROI: Build and refine Media Mix Models (MMM) and Multi-Touch Attribution (MTA) systems; Bridge B2B & B2C Growth: Design unified frameworks to optimize marketing for new advertisers and new users; Advance Causal Inference & Experimentation: Lead design of incrementality testing and geo-holdout experiments; Lead Through Influence: Collaborate with Marketing, Growth, and Finance to translate data insights into budget shifts; Be the Technical Guide for the Team: Mentor junior scientists and set the technical bar for code quality and statistical rigor.

Requirements

Advanced degree (Master’s or Ph.D.) in Statistics, Economics, Mathematics, or a related quantitative field; For M.S. holders: 10+ years of industry experience in marketing science, growth data science, or econometrics; For Ph.D. holders: 6+ years of industry experience; Deep understanding of the marketing ecosystem, including hands-on experience with Marketing Mix Modeling (MMM), Incrementality Testing, and Customer Lifetime Value (LTV) prediction; Advanced proficiency in Python or R and SQL; Experience building production-grade data pipelines and using machine learning for predictive modeling (e.g., churn prediction, lead scoring); Proven track record of influencing C-suite stakeholders and translating complex statistical concepts into business strategy; Experience working in fast-paced environments where you must navigate ambiguity and build frameworks from the ground up.

Nice to have

Experience with Bayesian structural time series or causal inference libraries; Previous experience in a high-growth marketplace or social media platform; A passion for the Reddit community and an understanding of our unique 'Ads-as-Content' philosophy.

Benefits

Comprehensive Healthcare Benefits and Income Replacement Programs; 401k with Employer Match; Global Benefit programs that fit your lifestyle, from workspace to professional development to caregiving support; Family Planning Support; Gender-Affirming Care; Mental Health & Coaching Benefits; Flexible Vacation & Paid Volunteer Time Off; Generous Paid Parental Leave; Medical, dental, and vision insurance; Generous time off for vacation and parental leave; Equity in the form of restricted stock units; Depending on the position offered, may be eligible to receive a commission.