Worked on the tinyhumansai/openhuman repository to develop a feature enabling safe multibyte UTF-8 body previews, addressing the challenge of truncating international content without corrupting character boundaries. The implementation focused on memory-safe string slicing in Rust, ensuring that previews remain readable and free from garbled text regardless of language. Unit tests were added to validate correctness across a variety of multibyte strings, reinforcing reliability and robustness. This backend development effort resolved issues with previous truncation logic, specifically targeting safe handling of UTF-8 data. The work demonstrated careful attention to both data integrity and internationalization within a Rust-based backend environment.