Over a two-month period, this developer enhanced the decidim/decidim and decidim-ice/decidim-module-decidim_awesome repositories by focusing on backend security and localization quality. They implemented secure URL escaping in Ruby on Rails to mitigate XSS vulnerabilities, ensuring malicious javascript: URIs are properly sanitized and validated through comprehensive tests. In addition, they resolved a constant initialization bug in the proposal override feature, restoring reliable functionality. Their work also included improving internationalization by correcting a localization typo in password strength messaging, aligning translation keys across multiple languages using Ruby and YAML. These contributions improved security, reliability, and user experience without altering core business logic.