Microsoft Excel, used by millions globally as their primary decision-making tool, is undergoing a transformation into a deeply collaborative platform. The team is seeking a Senior Software Engineer to enhance Excel's web application, focusing on rich collaboration scenarios and new capabilities while improving performance and user experience. This role at Microsoft offers an opportunity to work on challenging problems around scale, responsiveness, and cloud services in a fast-paced yet enjoyable environment. The position involves working with cutting-edge technology that impacts millions of users worldwide, making critical decisions about technology and design, implementing high-quality code, and mentoring junior engineers. Microsoft provides a growth-minded culture that values respect, integrity, and accountability, creating an inclusive environment where employees can thrive. The role offers comprehensive benefits, including industry-leading healthcare, educational resources, and work-life balance benefits. This is an excellent opportunity for experienced engineers passionate about building technology that impacts users globally while working with one of the world's leading technology companies.