Principal Software Engineer role focused on building and operating a next-generation, multi-tenant database platform at Roblox. Responsibilities include designing and implementing engine features (indexing, storage, replication, sharding), evolving the control plane for elastic scaling and autonomous healing, optimizing critical code paths, establishing engineering best practices, and automating platform operations. Requires deep experience with large-scale distributed databases, database internals, and C/C++, GO, or Rust.