Senior Data Scientist, Safety Enforcement

Reddit is seeking a Senior Data Scientist to join Safety Enforcement Data Science. You will own one or more defined enforcement problem areas and translate ambiguous abuse risks and written policy into measurable signals, labels, detection approaches, actioning logic, and evaluation plans.

Responsibilities:

• Own the enforcement lifecycle
• Discover and characterize abuse
• Build and evaluate decision systems
• Define decision-quality standards
• Ship with engineering partners
• Translate policy into systems
• Measure real-world impact
• Respond and learn
• Scale the team's effectiveness
• Stay ahead of the threat landscape

Required Qualifications:

• Ph.D. with 4+ years OR Master's degree with 8+ years of relevant industry experience in Data Science, Applied Science, Economics, or a related quantitative role
• Applied experience in safety, enforcement engineering, fraud, or similar fast-paced, adversarial domains
• Expertise in SQL and Python
• Strong background in statistical analysis, experiment design, causal modeling, and ML techniques
• Proven ability to deconstruct ambiguous problems into scopable components
• Exceptional communication skills

Preferred qualifications:

• Experience in Trust & Safety, integrity, fraud, spam and abuse, account security, cybersecurity, risk, content moderation, or another adversarial domain
• Experience with one or more enforcement-relevant methods such as graph or network analysis, NLP, embeddings, sequence or behavioral modeling
• Experience applying language models to detection, investigations, labeling, reviewer assistance, or workflow automation

Benefits:

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