Staff User Researcher

Job Description

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 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: Drive strategic, end-to-end research initiatives from framing questions and designing studies to synthesizing insights that directly shape product vision and roadmap decisions. Champion user-centered decision-making by embedding research into product strategy, advocating for user needs, and influencing leaders across functions.

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.

Elevate the research practice by mentoring peers, refining methods and tools, and scaling approaches that increase the visibility and impact of user insights across Firefox. What you’ll bring: 7+ years of experience in an applied research setting or similar. Extensive experience leading both evaluative and generative research across multiple phases of the product development lifecycle.

Demonstrated success operating in fast-paced, agile environments, adapting to shifting priorities while maintaining research impact. Deep expertise in qualitative methods (e. g.

, interviews, concept testing, usability studies) and practical experience with quantitative approaches (e. g. , survey design, data analysis).

Strong judgment in balancing research depth and speed, delivering insights that are both actionable and impactful for product and business decisions. Proficient in selecting and applying appropriate research methods based on the question, constraints, and stage of development. Collaborative and influential communicator, skilled at building partnerships with cross-functional teams and driving alignment through evidence-based insights.

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