Worked across guardian/frontend, guardian/dotcom-rendering, and guardian/csnx to deliver three features focused on transparency, build stability, and accessibility. In guardian/frontend, updated project documentation to recognize team contributors, supporting onboarding and team culture. For guardian/dotcom-rendering, upgraded TypeScript to 6.0.3, added Node typings, and enabled strict mode in Deno configuration, improving type safety and dependency management. Enhanced crossword cell accessibility in guardian/csnx by introducing descriptive aria-labels, addressing accessibility gaps for users. Collaborated with teams using TypeScript, Deno, and React, emphasizing maintainable code, clear documentation, and reliable version control to reduce future maintenance costs and improve platform reliability.