Worked on the estuary/flow repository to deliver a robust GraphQL-backed storage mapping system, focusing on reliable creation and update workflows for backend infrastructure. Leveraged Rust and GraphQL to implement parallel health checks, reinforce validation, and separate create and update mutations, reducing operational risk and improving error handling. Enhanced security by integrating decrypted HMAC key caching with the API server and GraphQL handlers, ensuring secure data plane access. Prepared the system for future schema evolution and custom storage definitions, supporting ongoing scalability. Comprehensive tests and improved authorization checks were added, resulting in a more resilient and maintainable backend API development process.