In February 2026, contributed to the microsoft/vscode repository by designing and implementing a data-driven A/B experiment for the sign-in dialog, comparing user interactions between a standard close button and a new 'Skip for now' option. Leveraging TypeScript and front end development skills, the work integrated with IWorkbenchAssignmentService to assign experiment variants and ensured consistent telemetry collection for both dismissal paths. The implementation included local testing guidance and established a reusable approach for future UI/UX experiments and telemetry instrumentation in the sign-in flow. The focus remained on feature experimentation, with no major bug fixes recorded during this period.