Over a two-month period, contributed to backend and accessibility improvements across the badlogic/pi-mono and oxc-project/oxc repositories using Rust and TypeScript. Enhanced Bedrock integration by refining message transformation, tool call ID sanitization, and token budgeting, which improved reliability and interoperability with external AI toolchains. Addressed a bug in max_tokens calculation to ensure compatibility with anthropic-messages and bedrock-converse-stream APIs. In the oxc project, developed and integrated a lint rule enforcing accessibility compliance for non-interactive elements, aligning with WCAG/ARIA standards. Emphasized robust testing, documentation, and maintainability, leveraging API integration, cloud services, and linting tools to support scalable code quality.