Principal Data Scientist, User Ecosystem

🕒 October 21

🇺🇸 United States – Remote

💵 $313k - $365.1k / year

⏰ Full Time

🔴 Lead

📊 Data Scientist

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Reddit, Inc.

WebsiteLinkedInAll Job Openings

501 - 1000 employees

Founded 2005

💼 Consulting

📣 Marketing

📱 Media

Consulting • Marketing • Media

Reddit, Inc. is a social media platform that acts as a hub for thousands of communities, where users can engage in diverse conversations ranging from breaking news to niche interests. It enables users to post, comment, and vote on content, fostering a vibrant online community. Millions of people globally connect and share their passions on Reddit, creating a dynamic environment for authentic human interaction.

📋 Description

• Set the scientific direction for high-impact Consumer problems spanning discovery, relevance, personalization, user growth, retention, content, and communities • Build a durable understanding of users, their intent, needs, and behaviors that lead to lasting value • Develop models and frameworks representing users, content, communities, and relationships over time for systems operating at scale • Determine how to measure consumer and ecosystem health when objectives compete and short-term engagement differs from long-term value • Set learning agendas and steer experimentation strategy to distinguish durable improvement from temporary metric movement • Build measurement systems evaluating heterogeneous effects across user personas, acquisition cohorts, platforms, content types, and community stages, and guide production actionability • Ensure coherence around ecosystem interactions, including feedback loops, selection effects, interference, distribution shift, content supply, and other ecosystem risks • Translate complex technical findings into clear product and business decisions • Develop exceptional scientists through mentoring and influence data science organization health and direction • Partner with leaders across Product, Engineering, Research, and Community to turn ambiguous consumer problems into scientific questions, analytical systems, and decisions improving Reddit at scale

🎯 Requirements

• Deep expertise in at least one relevant consumer science area, with breadth to work across adjacent domains • Deep understanding of modeling and optimizing systems involving users, content, communities, and feedback loops • Ability to frame and lead ambiguous questions and develop a rigorous path from evidence to action • Exceptional technical judgment across model design, objective selection, validation, experimentation, and production tradeoffs • Advanced knowledge of modern machine-learning methods for behavioral and content data, including representation learning and sequential or contextual models • Experience with deep-learning frameworks such as PyTorch or JAX • Experience working across Product, Engineering, Research, and other partner teams • Excellent written and verbal communication, with ability to influence senior stakeholders and explain technical ideas clearly • Significant experience applying data science, machine learning, statistics, experimentation, or causal inference to complex consumer products

🏖️ Benefits

• Equity in the form of restricted stock units • Potential commission, depending on the position offered • Medical insurance • Dental insurance • Vision insurance • 401(k) program with employer match • Generous vacation time off • Parental leave • Reasonable accommodations for qualified individuals with disabilities and disabled veterans • Option to opt out of AI interview recording, transcription, and summarization

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