In January 2025, Jaaskelainen centralized the Toaster notification component within the main layout of the Tietokilta/web repository, ensuring consistent notification placement throughout the application. By moving the Toaster from the invoice generator and eliminating redundant imports and configurations, he reduced maintenance overhead and simplified module boundaries. This architectural improvement, implemented using React, Next.js, and TypeScript, decreased coupling between components and streamlined future enhancements to notification handling. The work focused on frontend development and demonstrated a thoughtful approach to maintainability and user experience consistency, addressing both technical debt and usability concerns within a short project period without introducing new bugs.