About the Team
Reddit’s Ads Data Science team powers the future of advertising on Reddit. We leverage advanced data science methods to maximize advertiser value, improve user experience, and strengthen our ad marketplace. Our work spans targeting, relevance modeling, auction optimization, experimentation, and platform insights — all in close collaboration with product managers and engineers.
About the Role
We’re seeking a Senior Data Scientist who will design and implement data-driven solutions to improve advertiser experience and platform performance. You’ll analyze massive datasets, develop models, and share actionable insights that directly impact Reddit’s ad ecosystem.
What You’ll Do
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Use SQL and large-scale data analysis to uncover trends, patterns, and actionable insights.
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Design, build, and deploy data science solutions to optimize Reddit’s ad platform.
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Collaborate with cross-functional partners (PMs, engineers, data scientists) to translate business needs into measurable data solutions.
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Develop ML models for anomaly detection, prediction, and pattern recognition.
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Define and track metrics that measure success across ads products.
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Present findings and recommendations to stakeholders at all levels.
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Stay current on the latest machine learning and data science advancements.
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Mentor and support junior data scientists on the team.
What We’re Looking For
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Strong SQL skills with hands-on experience analyzing large datasets.
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Proven experience applying DS/ML methods to real-world business challenges.
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Background in ads, recommendation systems, or marketplace optimization is a plus.
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Ability to communicate complex findings clearly to technical and non-technical audiences.
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Passion for mentoring and collaborating in a highly cross-functional environment.
Location & Eligibility
This role is open to candidates located in:
Argentina, Armenia, Australia, Austria, Brazil, Bulgaria, Canada (excluding Quebec), Chile, Colombia, Croatia, Denmark, Dominican Republic, Egypt, Germany, Greece, Guatemala, Hungary, India, Ireland, Italy, Lithuania, Mexico, Netherlands, Norway, Panama, Philippines, Poland, Portugal, Romania, Singapore, Slovenia, Spain, Sweden, Switzerland, Taiwan, UAE, UK & Channel Islands, US, and Puerto Rico.
How to Stand Out in the Process
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Prepare a quiet space and stable internet connection.
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Be ready for an AI Interviewer screening via Braintrust (async, ~15 minutes).
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Review this job description in detail — questions will be based on it.
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Show enthusiasm, clarity, and authenticity — we’re looking for communication and team fit as much as technical expertise.
Equal Opportunity
Reddit is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.