Data Scientist, Ads
Role summary
Reddit's Ads Data Science team is seeking an experienced Staff Data Scientist to enhance the advertiser experience by focusing on measurement, identity resolution, and signal quality. This role involves developing measurement methodologies, experimental frameworks, and predictive models to improve advertising performance and platform monetization. The position requires advanced degrees and significant industry experience, with expertise in statistical programming, machine learning, and causal inference. The Data Scientist will lead statistical rigor, design experiments, define signal sources, and collaborate with cross-functional teams, while also mentoring team members and setting technical standards. This is a strategic role with autonomy to shape the advertising ecosystem.
About The Company
Reddit is a vibrant community platform that fosters authentic conversations and shared interests across a diverse range of topics. With over 100,000 active communities and approximately 121 million daily active visitors, Reddit has established itself as one of the largest and most influential sources of information on the internet. Built on the principles of openness, trust, and community engagement, Reddit provides a space where users can submit, vote, and comment on content that matters most to them. The company is committed to innovation, growth, and creating a welcoming environment for both users and employees. For more information, visit www.redditinc.com.
About The Role
Reddit’s Ads Data Science team is seeking a highly experienced Staff Data Scientist to enhance the intelligence and effectiveness of the advertiser experience on Reddit. In this strategic role, you will take ownership of high-impact areas within advertising, focusing on measurement, identity resolution, and signal quality. Your contributions will directly influence the development of measurement methodologies, experimental frameworks, and predictive models that drive advertising performance and platform monetization. This role offers autonomy and the opportunity to set technical standards while collaborating closely with cross-functional teams including engineering, product, and sales. You will be instrumental in shaping the future of Reddit’s advertising ecosystem, leveraging advanced data science techniques to maximize advertiser value and uphold user privacy.
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 advertising ecosystem and digital marketing metrics
- Expertise in measurement and experimentation at scale, including lift and attribution models
- Experience in identity graph creation, resolution methodology, and infrastructure development
- Proficiency in predictive modeling, especially with signal loss considerations
- Advanced skills in statistical programming languages such as Python or R and SQL
- Experience with machine learning, optimization techniques, and causal inference methodologies
- Strong problem-solving skills with the ability to communicate complex concepts effectively
- Proven track record of influencing product and engineering teams in fast-paced environments
Responsibilities
- Design and develop probabilistic models for identity resolution that link on-platform and off-platform actions, respecting user privacy and maximizing addressability
- Lead the statistical rigor behind Reddit’s Brand and Conversion Lift products, innovating experimental design and infrastructure for large-scale testing
- Define and strategize new signal sources, quantifying their value and integrating them into predictive models to enhance bidding efficiency and return on ad spend
- Develop ground truth and evaluation frameworks, creating objective functions and truth sets for model training and impact measurement
- Collaborate deeply with engineering, product, and sales teams to align on strategic goals, translate insights into actions, and drive cross-functional initiatives
- Mentor team members, set best practices, and ensure high technical standards across modeling, experimentation, and measurement activities
- Stay abreast of industry trends and advancements in data science, machine learning, and measurement methodologies to continuously improve processes and outcomes
Benefits
- Comprehensive healthcare benefits including medical, dental, and vision insurance
- Income replacement programs and 401(k) plan with employer matching
- Global benefits programs supporting professional development, workspace needs, and caregiving
- Family planning support and gender-affirming care
- Mental health services and coaching benefits
- Flexible vacation policies and paid volunteer time off
- Generous paid parental leave
- Pay transparency and competitive compensation packages, including potential equity and bonuses
Equal Opportunity
Reddit is an equal opportunity employer committed to fostering a diverse and inclusive workplace. We do not discriminate based on race, ethnicity, gender, sexual orientation, age, disability, or any other protected status. We provide reasonable accommodations for qualified individuals with disabilities and disabled veterans throughout the application and employment process. We believe that diverse teams drive innovation and success, and we welcome applicants from all backgrounds to join our community.
