Worked on the gofiber/fiber repository to address a critical issue in the routing middleware, focusing on backend development with Go and API design. Delivered a targeted bug fix that modified the middleware to skip non-use routes, which previously caused fallback errors during server error middleware traversal. This change improved error handling and response accuracy for unmatched routes, ensuring that fallback logic was only triggered when appropriate. The solution involved a careful review and validation of routing logic within the Fiber middleware architecture, resulting in more reliable server behavior under load and enhancing the overall stability of route management in the application.