Tahir Abbasi enhanced the hmcts/probate-frontend repository by improving accessibility and semantic structure, updating the cookie banner heading for better HTML compliance and reducing noise in automated accessibility tests. He collaborated closely with QA to ensure these frontend changes aligned with accessibility and SEO standards, using JavaScript and HTML. In the hmcts/probate-back-office repository, Tahir permanently enabled key backend features by removing feature flags and cleaning up legacy code, which streamlined configuration and improved maintainability. His work in Java and backend development focused on risk reduction and operational efficiency, resulting in more predictable release cycles and a more robust codebase.