Staff Data Scientist, Ads

About this role

Lead data science for Mozilla’s advertising business, helping teams measure performance, evaluate opportunities, and make informed product and business decisions. The role combines hands-on analysis with strategic partnership across the organization, while supporting an advertising business that protects user privacy.

About the company

Mozilla builds open-source products and technologies, including Firefox, that prioritize privacy, security, and an open internet.

The team

Monetization Data Science team

Stack

What you'll do

• Partner with Ads stakeholders to identify and prioritize high-impact opportunities
• Own complex analytical work from problem framing through recommendations and follow-through
• Develop measurement frameworks, success metrics, experiments, instrumentation, and reporting for advertising products
• Analyze advertising revenue and performance to inform business and product decisions
• Communicate findings, assumptions, and uncertainty to technical partners and senior executives

What we're looking for

• 8+ years of experience in data science, analytics, or applied quantitative roles
• Experience in digital advertising or a related monetization business
• Strong Python and SQL skills
• Experience with statistical, experimental, forecasting, and analytical methods
• Ability to independently frame ambiguous problems and drive work to clear recommendations
• Strong analytical judgment, communication, and relationship-building skills

Benefits

• Performance-based bonus plan
• Medical, dental, and vision coverage
• Retirement contributions with immediate vesting
• Quarterly company wellness days
• Country-specific holidays and a birthday day off
• One-time home office stipend
• Annual professional development budget
• Paid parental leave