Over a three-month period, contributed to the bitwarden/server and bitwarden/sdk-internal repositories with a focus on backend development, cryptography, and maintainability. Led the deprecation and removal of encryption-related feature flags in C#, streamlining the bitwarden/server codebase and aligning it with evolving encryption strategies. In Rust, addressed critical bugs in bitwarden/sdk-internal by implementing backward-compatible fixes for uninitialized cryptographic state and resolving key rotation unwrap logic, thereby improving stability and reducing risk of data loss. Demonstrated strong code hygiene, traceability, and cross-team collaboration, ensuring compatibility across client versions while enhancing the security and reliability of cryptographic operations and key management.