Reddit, Inc.

Principal Data Scientist, Ads

Reddit, Inc.

full-time

Posted on:

Location Type: Remote

Location: Remote • 🇺🇸 United States

Visit company website
AI Apply
Apply

Salary

💰 $26,800 - $365,100 per year

Job Level

Lead

Tech Stack

PythonSQL

About the role

  • Define the future of Ads Data Science: Own the design and long-term evolution of our core Ads Data Science solutions and infrastructure, building for the next several years of continued scale, revenue growth, and relevance.
  • Strategic leadership & scientific roadmap: Identify fundamental gaps and opportunities in our current systems (including platform, auction, targeting, and full-funnel relevance models). Lead the strategic design and scientific roadmap for new solutions to significantly improve Advertiser ROI, User experience, and Reddit revenue.
  • Drive end-to-end impact: Take end-to-end ownership of complex problem domains such as full funnel acceleration, advertiser lifetime value (LTV), and developing advanced predictive and causal frameworks that power Reddit’s strategic investments.
  • Establish scientific standards: Define and codify best practices for large-scale statistical modeling, economic analysis, causal inference, offline model evaluation, and A/B experimentation to ensure scientific rigor and trust across the Ads data science and engineering teams.
  • Technical deep dive & authority: Be the undisputed domain authority for data scientists, engineers, and product managers on complex problems involving large-scale behavioral data, foundational models for strategic insights, and the economics of marketplace dynamics.
  • Translate ambiguity into outcomes: Influence the design and definition of core business and performance metrics, robust measurement methodologies, and collaborate deeply with cross-org XFNs to align on strategic goals and translate insights into tangible action.
  • Influence and uplevel the organization: Lead technically minded peers and mentor senior data scientists, influencing technical and statistical direction across the entire product and engineering organization, and championing innovation in ad systems through advanced quantitative techniques.

Requirements

  • Demonstrated expertise in at least one of the following: ads marketplace understanding, auctioning/bidding, ads creative & format evaluation, measurement & experimentation at scale
  • Master's or Ph.D. in Economics, Statistics, Computer Science, Operations Research, or a related quantitative discipline
  • For M.S. holders: 12+ years of industry experience in applied science, data science, or machine learning engineering roles
  • For Ph.D. holders: 8+ years of relevant experience applied science, data science, or machine learning engineering roles
  • Advanced proficiency in statistical programming (Python or R) and SQL
  • Experience with statistical analysis, economic modeling, foundational machine learning and/or optimization techniques
  • Strong understanding of experimental design, causal inference, or A/B testing methodologies
  • Exceptional problem-solving and communication skills, with a track record of influencing product and engineering partners
  • Experience working in fast-paced, ambiguous environments with cross-functional teams
  • Proven experience in influencing large (500+ engineers/data scientists) organizations on technical direction, statistical rigor, and machine learning best practice.
Benefits
  • Comprehensive Healthcare Benefits and Income Replacement Programs
  • 401k Match
  • Family Planning Support
  • Gender-Affirming Care
  • Mental Health & Coaching Benefits
  • Flexible Vacation & Reddit Global Days off
  • Generous paid Parental Leave
  • Paid Volunteer time off

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard skills
statistical programmingPythonRSQLstatistical analysiseconomic modelingmachine learningoptimization techniquesexperimental designcausal inference
Soft skills
problem-solvingcommunicationinfluencingmentoringcollaborationleadershipstrategic thinkingadaptabilityinnovationcross-functional teamwork
Certifications
Master's in EconomicsMaster's in StatisticsMaster's in Computer ScienceMaster's in Operations ResearchPh.D. in EconomicsPh.D. in StatisticsPh.D. in Computer SciencePh.D. in Operations Research
Mozilla

Staff Data Scientist – Operations

Mozilla
Leadfull-time$150k–$237k / year🇺🇸 United States
Posted: 28 minutes agoSource: boards.greenhouse.io
PythonSQL
AMERICAN SYSTEMS

Data Science Manager

AMERICAN SYSTEMS
Senior · Leadfull-time$108k–$181k / yearDistrict of Columbia, Washington · 🇺🇸 United States
Posted: 2 hours agoSource: careers-americansystems.icims.com
PHPPythonSQLTableauTensorflow
Marketing Architects

Lead Data Scientist

Marketing Architects
Seniorfull-time$160k–$190k / yearCalifornia · 🇺🇸 United States
Posted: 2 hours agoSource: jobs.ashbyhq.com
AWSAzureCloudDockerGoogle Cloud PlatformKubernetesNumpyPandasPythonPyTorchScikit-LearnSQL+1 more
Stitch Fix

Machine Learning Data Scientist – Logistics Algorithms

Stitch Fix
Mid · Seniorfull-time$106k–$177k / year🇺🇸 United States
Posted: 5 hours agoSource: boards.greenhouse.io
PythonScikit-LearnSQL
CrowdStrike

Senior Manager, Data Science – Enterprise AI

CrowdStrike
Seniorfull-time$145k–$220k / year🇺🇸 United States
Posted: 5 hours agoSource: crowdstrike.wd5.myworkdayjobs.com
CloudPythonSQLTableau