Quantitative User Researcher

About this team and role

The Firefox User Research team champions human-centered exploration of complex problems, using evidence, data, and insight to drive decision-making. We use quantitative and qualitative research to understand business needs and uncover user insights that inform product and design strategy.

As a Staff Quantitative User Researcher, you’ll lead strategic and tactical quantitative studies, working with product managers, designers, engineers, data scientists, product marketers, and fellow researchers. You’ll apply quantitative methods to scientifically understand users’ experiences, needs, motivations, and behaviors at scale, translating those findings into clear, actionable insights that shape roadmaps and strategies.

• Own strategic, end-to-end quantitative research initiatives from scoping business needs and designing surveys to synthesizing data and communicating actionable recommendations to influence product decisions.
• Partner cross-functionally at a strategic level with product, design, engineering, data science, and marketing to develop a research roadmap, identify high-impact research opportunities, and align insights to business priorities.
• Champion user-centered decision-making by embedding quantitative research into product strategy, advocating for user needs, and influencing leaders across functions.
• Analyze and translate complex data sources (e.g., surveys, behavioral data, and market intelligence) to build cohesive, evidence-based perspectives on user experience and audience insights.
• Help elevate the quantitative research practice by mentoring peers, refining methods and tools, and scaling approaches that increase the visibility and impact of user insights across Firefox.

• 7+ years of experience in a user, product, or market research setting or similar, with a strong focus on quantitative research.
• Extensive experience leading survey research across the product development lifecycle, using quantitative insights to measure and influence product and business decisions.
• Deep expertise in empirical survey methods (e.g., planning, sampling, weighting, statistical analysis) and applications (e.g., product needs, audience understanding, tracking studies, concept testing, panel surveys, intercept surveys).
• Highly proficient in R for statistical programming and analyzing survey data.
• Experience using SQL to integrate behavioral data with survey responses to tell a cohesive user-focused story.
• Demonstrated ability to craft compelling narratives using quantitative data and visualizations.
• Demonstrated success operating in fast-paced, agile environments, adapting to shifting priorities while maintaining research impact.
• Experience collaborating with qualitative researchers to enable mixed methods research designs and roadmaps. Hands-on qualitative research experience is a bonus.
• Strong judgment in balancing research depth and speed, delivering insights that are both actionable and impactful for product and business decisions.
• Collaborative and influential communicator, skilled at building partnerships with cross-functional teams and driving alignment through evidence-based insights.

• Welcoming differences
• Being relationship-minded
• Practicing responsible participation
• Having grit

• Generous performance-based bonus plans to all eligible employees – we share in our success as one team
• Rich medical, dental, and vision coverage
• Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)
• Quarterly all-company wellness days where everyone takes a pause together
• Country specific holidays plus a day off for your birthday
• One-time home office stipend
• Annual professional development budget
• Quarterly well-being stipend
• Considerable paid parental leave
• Employee referral bonus program
• Other benefits (life/AD&D, disability, EAP, etc. – varies by country)

Mozilla exists to build the Internet as a public resource accessible to all because we believe that open and free is better than closed and controlled. When you work at Mozilla, you give yourself a chance to make a difference in the lives of Web users…