Staff Data Scientist - Ads Measurement, Signals, Privacy

Reddit's Ads Data Science team is looking for a highly experienced Staff Data Scientist to advance the intelligence powering the advertiser experience on Reddit.

In this role, you'll take deep ownership of a high-impact problem space within advertising, specializing in measurement, identity, and signal quality.

Responsibilities:

• Design the Future of Ads Identity: Develop and employ probabilistic models for identity resolution.
• Advance Lift Methodologies & Experimentation: Own the statistical rigor behind Reddit's Brand and Conversion Lift products.
• Maximize Signal for Predictive Performance: Define the strategy for new signal sources.
• Define Ground Truth & Evaluation Frameworks: Solve the industry-wide challenge of validating identity and measurement.
• Lead Through Cross-Functional and Technical Influence: Collaborate deeply with engineering, product, and sales to align on strategic goals.

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.
• Demonstrated expertise in at least one of the following areas: Measurement & Experimentation at Scale, Identity Graph Creation & Resolution Methodology and 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 a track record of influencing product and engineering partners.

Benefits:

• Comprehensive Healthcare Benefits and Income Replacement Programs.
• 401k with Employer Match.
• Global Benefit programs that fit your lifestyle.
• Family Planning Support.
• Gender-Affirming Care.
• Mental Health & Coaching Benefits.
• Flexible Vacation & Paid Volunteer Time Off.
• Generous Paid Parental Leave.