As a Staff Data Scientist at Google Photos, you'll be at the heart of product improvements, collaborating with engineers and product managers. You'll leverage your analytical skills to solve complex business problems, develop insightful solutions, and drive product decisions. Responsibilities include performing analysis using SQL, R, and Python; developing investigative solutions; managing cross-functional projects; and mentoring colleagues. You'll work on the engagement side of the business, focusing on user retention and satisfaction. This role requires strong statistical modeling, experimentation, and causal inference skills to improve the Google Photos product and user experience for over a billion users worldwide.