Microsoft's Planner team is seeking a Senior Software Engineer to revolutionize collaboration experiences through cutting-edge innovations. The role focuses on building highly performant, scalable, and cost-efficient cloud-based solutions that empower millions of users across Teams, Outlook, and Office platforms. As part of this dynamic team, you'll work on developing technologies that enable seamless, distributed solutions for a global audience. The position requires expertise in full-stack development, distributed systems, and cloud services, with a strong emphasis on .NET and Azure technologies. You'll be responsible for leading critical platform features, mentoring junior engineers, and driving innovation while maintaining high standards of performance and reliability. The role offers an opportunity to work in Microsoft's inclusive culture, where diversity and collaboration are valued, and every team member contributes to empowering users worldwide to achieve more. This position combines technical leadership with hands-on development, making it ideal for engineers passionate about building scalable solutions that impact millions of users.