Staff Data Scientist, Ads

About this role

Mozilla is hiring a Staff Data Scientist for its Ads business. The role partners with Product, Engineering, Sales, Finance and senior leadership to identify high-impact opportunities, build measurement and analytical approaches, and support decision-making in a fast-paced, evolving advertising environment. It involves leading end-to-end analytical work, developing measurement frameworks for ads products, and translating findings for diverse audiences, from technical teams to executives. The position sits within Mozilla’s Monetization Data Science team, which focuses on growing the advertising business while protecting user privacy. The role requires strong technical and business judgment and the ability to operate between deep analysis and executive-level communication.

What you would do

• Lead data science partnerships for Mozilla’s Ads business across multiple teams to identify and prioritise opportunities
• Own complex analytical problems from framing to communicating recommendations and driving follow-through
• Develop measurement frameworks for new and evolving advertising products, including metrics, experimentation, instrumentation and reporting
• Analyze advertising revenue and performance to identify key drivers and inform product and business decisions
• Translate findings and uncertainties into clear recommendations for technical and non-technical audiences

What they are asking for

• 8+ years of experience in data science, analytics, or similar roles with ownership of complex analytical work
• Experience with digital advertising or monetization and understanding of product, user, advertiser and revenue interactions
• Strong Python and SQL skills; experience with statistical, experimental, forecasting methods applied to business problems
• Ability to frame ambiguous problems, focus on what matters, and drive work to a clear recommendation
• Excellent analytical judgment, balancing rigour with pragmatism and communicating uncertainty appropriately
• Proven ability to build trusted relationships and communicate findings to technical partners and senior executives
• Commitment to Mozilla values: welcoming differences, being relationship-minded, responsible participation, grit

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