This senior staff role within the Firefox User Research team serves as a strategic research leader dedicated to shaping product vision and organizational strategy. The position involves leading high-stakes mixed-methods studies, integrating diverse data sources to drive executive decision-making, and establishing standards for the responsible use of AI in research workflows. Key responsibilities include mentoring junior researchers, collaborating cross-functionally with product and engineering leaders, and defining methodological excellence across the organization. The role appeals to candidates seeking to impact the future of the open internet while working for a mission-driven non-profit. It offers a remote work arrangement, a collaborative culture focused on diversity and inclusion, and opportunities for professional growth through a dedicated development budget.