During November 2024, this developer focused on backend stability for the BiteSpeed-Dev/chatwoot repository, addressing a critical issue affecting Line sticker image rendering. Using Ruby and leveraging skills in API integration and backend development, they identified and resolved a bug where the sticker URL variant was incorrectly set to 'iphone' instead of 'android', which caused images to fail loading across devices. The solution involved a targeted code change, followed by thorough manual testing and log review to confirm correct asset loading across all variants. The work demonstrated careful validation and a focused approach to maintaining user-visible reliability without introducing regressions.