Staff Data Scientist - Ads Measurement, Signals, Privacy

The role

This role advances the intelligence powering the advertiser experience on Reddit. You will specialize in measurement, identity, and signal quality to influence strategic direction and drive cross-functional initiatives.

What you will do

• Develop and employ probabilistic models for identity resolution.
• Design methodology linking on-platform and off-platform actions to maximize addressability while honoring privacy.
• Own the statistical rigor behind Brand and Conversion Lift products.
• Innovate experimental design and develop infrastructure for large-scale testing.
• Define the strategy for new signal sources.
• Mathematically quantify signal value and work with modeling teams to improve bidding efficiency and ROAS.
• Design objective functions and truth sets to validate identity and measurement.
• Collaborate with engineering, product, and sales to align on strategic goals.
• Mentor others and champion best practices across modeling, experimentation, and measurement.

Required 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, or Predictive Modeling with
• 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
• Experience working in fast-paced, ambiguous environments with cross-functional teams

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

Before you apply

• In select roles and locations, the interviews will be recorded, transcribed and summarized by artificial intelligence (AI).
• You will have the opportunity to opt out of recording, transcription and summarization prior to any scheduled interviews.

About the company

Reddit is a community of communities built on shared interests, passion, and trust. It is home to the most open and authentic conversations on the internet with 100,000+ active communities.