Over a two-month period, contributed to both the simplex-chat/simplex-chat and trailofbits/publications repositories by delivering features focused on secure file handling, image processing, and technical documentation. Developed robust file upload and image attachment validation in Kotlin, implementing strict size limits, exception handling, and comprehensive unit tests to ensure reliability and security for end users. Enhanced documentation and presentation materials in Markdown and PDF formats to support external engagement at DeCompute 2025, streamlining knowledge transfer and onboarding. Demonstrated a methodical approach to version control and traceability, emphasizing maintainability and clear auditability across both code and documentation deliverables.