Every day, tens of millions of people come to Roblox to explore, create, play, learn, and connect with friends in 3D immersive digital experiences- all created by our global community of developers and creators. At Roblox, we're building the tools and platform that empower our community to bring any experience that they can imagine to life. Our vision is to reimagine the way people come together, from anywhere in the world, and on any device. We're on a mission to connect a billion people with optimism and civility, and looking for amazing talent to help us get there. A career at Roblox means you'll be working to shape the future of human interaction, solving unique technical challenges at scale, and helping to create safer, more civil shared experiences for everyone. As a Principal Software Engineer on the team, you will define the backend systems that empower Roblox players, creators, influencers, and brands to build a compelling identity on Roblox. You will tech lead the engineering team, influence service architecture designs, and guide the team's roadmap. Your work will power the Roblox ecosystem, helping people recognize and connect with friends & interests on Roblox, express themselves, and discover & engage with the best of Roblox through their connections. You will own critical features used by millions of users daily, such as profiles, names, online presence, coplay tools, and social proof, as well as develop new zero-to-one features. You will drive company-level objectives for user engagement. If you are an experienced developer with a deep understanding of large scale systems and enjoy shaping engineering vision, you'll be right at home within our highly-skilled and product-focused team. This role is based at Roblox HQ in San Mateo, CA (no remote option).