Senior Data Scientist, Ads

Reddit is a community of communities built on shared interests, passion, and trust. It is home to authentic conversations and one of the internet's largest sources of information, with 100,000+ active communities and approximately 130 million daily active unique visitors. Advertising is Reddit's primary revenue driver, and we aim to grow it into a massive business by leveraging our passionate communities and community-centric platform.

Reddit offers a flexible, remote-first workforce and is fully remote-friendly.

About the Ads Data Science Team

The Ads Data Science team at Reddit leverages data to maximize advertiser value through robust data foundations, metrics, and strategic insights generated via experimentation and cutting-edge data science methods. We tackle challenging problems in ads and platform measurement, campaign and creative management, advertiser growth and retention, monetization, and the intersection of brand and community engagement. Our collaborative team of data scientists and engineers pushes the boundaries of machine learning and statistical modeling.

Responsibilities

• Design, develop, and apply data science solutions to improve advertiser experience and Reddit's ad platform.
• Analyze large-scale datasets to identify trends, patterns, and insights that enhance advertising effectiveness.
• Collaborate with product managers and engineers to define product requirements and translate them into data science solutions.
• Develop machine learning models and data science methods to improve anomaly detection, prediction, and pattern recognition.
• Communicate findings and recommendations to stakeholders across the organization.
• Stay up-to-date on the latest advancements in machine learning and data science.
• Mentor and guide junior data scientists on the team.

Qualifications

• Advanced degree (Masters or Ph.D.) in a quantitative field such as Statistics, Mathematics, Physics, Economics, or Operations Research.
• For M.S. holders: 5+ years of industry experience in applied science or data science roles.
• For Ph.D. holders: 4+ years of industry experience in applied science or data science roles.
• Platform experience and a deep understanding of the ads ecosystem.
• Strong understanding of statistical modeling, machine learning algorithms, causal inference, and experimental design.
• Experience with large-scale data processing and analysis using tools such as Spark, Hadoop, or Hive; knowledge of BigQuery is a plus.
• Proficiency in Python or R and experience with machine learning libraries such as scikit-learn, TensorFlow, or PyTorch.
• Experience with SQL and relational databases.
• Excellent communication and presentation skills.
• Passion for Reddit and the online advertising industry.

Skills

• Experience with online advertising and ad tech (bonus).
• Experience with causal inference and A/B testing (bonus).
• Contributions to open-source projects or publications in relevant conferences or journals (bonus).

Benefits

• Comprehensive healthcare benefits and income replacement programs.
• 401k with employer match.
• Global benefit programs that fit your lifestyle, including workspace, professional development, and caregiving support.
• Family planning support.
• Gender-affirming care.
• Mental health and coaching benefits.
• Flexible vacation and paid volunteer time off.
• Generous paid parental leave.

Pay

The base salary range for this position is $190,800—$267,100 USD. In addition to base salary, this role is eligible for equity in the form of restricted stock units and may also include commission. Reddit offers a wide range of benefits to U.S.-based employees, including medical, dental, and vision insurance, a 401(k) program with employer match, and generous time off for vacation and parental leave.