Experienced Mobile Developer Needed for Mini-Game Bug Resolution

I am seeking a skilled mobile developer to address a couple of small bugs in an existing mobile mini-game application. The game is largely complete and functional, but two specific issues are impacting the user experience.

Project Scope:
1.  Score Counter Issue: The score counter sometimes fails to update correctly after a level is completed.
2.  Restart Button Delay: The restart button occasionally experiences a delay in responsiveness.

Required Tasks:
*  Thoroughly review the existing mini-game codebase.
*  Accurately identify the root cause of the score update malfunction.
*  Implement a fix to resolve the restart button's delayed response.
*  Conduct comprehensive testing to ensure both issues are fully resolved and the game functions as expected.

App Details:
*  The project involves a simple mini-game.
*  The codebase is already completed.
*  The source code will be provided to the selected freelancer after the project is awarded.

This is expected to be a quick fix for a developer experienced in mobile app debugging. If this initial task is completed successfully, there may be opportunities for additional small development tasks on this application in the future. Please include a brief overview of your experience in fixing bugs within mobile applications in your proposal.