Remote - British Columbia, Canada
Open 3 months, first seen by us 94 days agoListed location: Remote - British Columbia, CanadaRead the full posting
Develop probabilistic models linking on-platform and off-platform actions for identity resolution
Own statistical methods behind Brand and Conversion Lift products
Quantify the value of new signal sources and fold them into predictive models
Design objective functions and truth sets for training and evaluating identity models
Mentor others and set best practices across modeling, experimentation and measurement
Develop/employ probabilistic models for identity resolution
Own the statistical rigor behind Reddit’s Brand and Conversion Lift products
You will mathematically quantify the value of these signals and work with modeling teams to incorporate them into predictive models
Design the objective functions and truth sets used to train our models
Set a high technical bar by mentoring others and championing best practices across modeling, experimentation, and measurement
Deep understanding of the ads ecosystem
Experience with machine learning or optimization techniques
Demonstrated expertise in at least one of the following areas:
Strong understanding of experimental design, causal inference, or A/B testing methodologies
Experience working in fast-paced, ambiguous environments with cross-functional teams
Required: - Advanced degree (Master's or Ph.D.) in Statistics, Mathematics, Physics, Economics, or Operations Research - For M.S. holders: 10+ years of industry experience in applied science or data science roles
- For M.S. holders: 10+ years of industry experience in applied science or data science roles - For Ph.D. holders: 6+ years of industry experience in applied science or data science roles - Deep understanding of the ads ecosystem
From the employer’s posting.
Open 3 monthsWe first saw this posting 94 days ago and it is still up. Roles open this long are often slow to fill or kept open to collect applications.
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Day 94
Up longer than most. Similar jobs usually come down between day 7 and day 57.
At Reddit, jobs usually come down by about day 48.
From 10,558 similar postings that came down, and 33 of Reddit’s. Coming down is not always a hire.
43 open jobs
Open jobs by the week we first saw them, last 12 weeks.
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- Predictive Modeling with Signal Loss - Advanced proficiency in statistical programming (Python or R) and SQL. - Experience with machine learning or optimization techniques
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Yes. We’ve followed one other Staff Data Scientist - Ads Measurement, Signals, Privacy job there since July 2026. It is still up.
New Data Scientist postings at the employers we follow are down 3% over the last 5 weeks compared with the 5 before.
Each bar is one week of new postings. The darkest bars are the last 5 weeks.
Counted from the hiring pages we’ve followed for at least five weeks, so employers we add don’t look like growth. Updated weekly.
We file this job under Data Scientist, by the work the posting describes.
Data scientists use statistics and models to answer harder questions, such as whether a change worked, what demand will look like next quarter, or which customers are likely to leave.
Postings usually ask for Python or R, SQL, statistics, experiment design and common machine learning methods.
Unlike an ML engineer, a data scientist's main output is often an analysis or a first model, not software running inside a product.
Source: US Bureau of Labor Statistics, Occupational Employment and Wage Statistics (May 2025) and Employment Projections (2025 to 2035). Occupation code 15-2051.
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.
Responsibilities:
Qualifications:
Required:
Benefits:
#LI-Remote
In select roles and locations, the interviews will be recorded, transcribed and summarized by artificial intelligence (AI). You will have the opportunity to opt out of recording, transcription and summarization prior to any scheduled interviews.
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. We will delete any recording of your interview promptly after making a hiring decision. 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.
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Remote - British Columbia, Canada
- Generous Paid Parental Leave #LI-Remote In select roles and locations, the interviews will be recorded, transcribed and summarized by artificial intelligence (AI). You will have the opportunity to opt out of recording, transcription and summarization prior to any scheduled interviews.
No clear work-authorization passage found. Eligibility is unconfirmed.
