SR Staff Mixed Methods User Researcher

Why Mozilla?

Mozilla Corporation is the non-profit-backed technology company that has shaped the internet for the better over the last 25 years. We make pioneering brands like Firefox, the privacy-minded web browser. Now, with more than 225 million people around the world using our products each month, we’re shaping the next 25 years of technology and helping to reclaim an internet built for people, not companies. Our work focuses on diverse areas including AI, social media, security and more. And we’re doing this while never losing our focus on our core mission – to make the internet better for people.

The Mozilla Corporation is wholly owned by the non-profit 501(c) Mozilla Foundation. This means we aren’t beholden to any shareholders — only to our mission. Along with thousands of volunteer contributors and collaborators all over the world, Mozillians design, build and distribute open-source software that enables people to enjoy the internet on their terms.

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 mixed methods research to understand business needs and uncover user insights that inform product and design strategy.

In this role, you’ll serve as a research leader across the organisation, contributing to the strategic direction for how research is practised and coaching and mentoring the next generation of researchers. You will lead both evaluative and foundational studies in close partnership with product managers, designers, engineers, data scientists, and fellow researchers. You’ll apply qualitative and quantitative methods to understand users’ experiences, contexts, motivations, and behaviors, translating those findings into clear, actionable insights that shape roadmaps and strategies.

What you’ll do

• Lead the most complex, ambiguous, and highest-stakes research studies, setting the standard for research excellence and directly shaping product vision at the organisational level.
• Drive user-centered decision-making at the executive level, influencing directors and VPs and ensuring user needs are embedded in the long-term product and business strategy.
• Partner cross-functionally at a strategic level with product, design, engineering, data science, and marketing to identify high-impact research opportunities and align insights to business priorities.
• Integrate diverse data sources — qualitative and quantitative research, behavioral data, and market intelligence — to build cohesive, evidence-based perspectives on user experience.
• Leverage AI tools thoughtfully across the research workflow while applying critical review to ensure outputs are accurate.
• Define standards for responsible AI use in research, establishing frameworks that the broader team adopts and that position Mozilla as a leader in ethical AI-assisted research practice.
• Elevate the research practice by setting the methodological bar, identifying capability gaps across the team, and mentoring Staff researchers and below.