Staff Data Scientist - Ads Measurement, Signals, Privacy Reddit is a community of communities. Every day, Reddit users submit, vote, and comment on the topics they care most about. With 100,000+ active communities and approximately 130 million daily active unique visitors, Reddit is one of the internet’s largest sources of information.

Reddit’s Ads Data Science team is looking for a highly experienced Staff Data Scientist to advance the intelligence powering the advertiser experience on Reddit. In this role, you'll take deep ownership of a high-impact problem space within advertising, specializing in measurement, identity, and signal quality. This is a high-impact, high-autonomy role where you'll influence strategic direction, set a high technical bar, and drive cross-functional initiatives across one or more critical focus areas in the Ads organization.

Innovate experimental design and develop infrastructure that supports large-scale, high-velocity, low-bias testing for advertisers.

Maximize Signal for Predictive Performance: You will mathematically quantify the value of these signals and work with modeling teams to incorporate them into predictive models, directly improving bidding efficiency and ROAS.

Lead Through

Cross-Functional and Technical Influence: Collaborate deeply with engineering, product, and sales to align on strategic goals, translate insights into action, and drive execution. Set a high technical bar by mentoring others and championing best practices across modeling, experimentation, and measurement. in Statistics, Mathematics, Physics, Economics, or Operations Research ~ S. holders: 10+ years of industry experience in applied science or data science roles ~ D. holders: 6+ years of industry experience in applied science or data science roles ~ Advanced proficiency in statistical programming (Python or R) and SQL. ~ Experience with machine learning or optimization techniques ~ Strong understanding of experimental design, causal inference,



or A/B testing methodologies ~ Comprehensive Healthcare Benefits and Income Replacement Programs ~In select roles and locations, the interviews will be recorded, transcribed and summarized by artificial intelligence (AI). During the interview, we will collect the following categories of personal information: Identifiers, Professional and Employment-Related Information, Sensory Information (audio/video recording), and any other categories of personal information you choose to share with us.

We will use this information to evaluate your application for employment or an independent contractor role, as applicable. We will not sell your personal information or disclose it to any third party for their marketing purposes. For more information about how we will handle your personal information, including our retention of it, please refer to our Candidate Privacy Policy for Potential Employees and Contractors .

Reddit is proud to be an equal opportunity employer, and is committed to building a workforce representative of the diverse communities we serve. Reddit is committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. If, due to a disability, you need an accommodation during the interview process, please let your recruiter know.

Reddit is proud to be an equal prospect employer, and is committed to building a workforce representative of the diverse communities we serve. To bring community and belonging to everyone in the world, Reddit’s employees must represent communities and redditors on our platform. Accommodations are available throughout the recruitment process and applicants with a disability may request to be accommodated throughout the recruitment process.

Our vision at Reddit is to have a workforce representative of people with different perspectives and experiences, including but not limited to, gender, race and ethnicity, sexual orientation, age, national origin, religion, and political views. Answering these questions will not impact your application, nor will this information be shared with anyone making a hiring decision.

📌 Assistant Data-Scientist - Machine Learning H/F (Toronto)
🏢 Reddit
📍 Toronto