Flutter app modification

I am looking for a skilled Flutter developer to make modifications to my app. Specifically, I need both UI/UX design and functionality changes implemented in less than one week.

Skills and Experience:
- Proficient in Flutter development
- Experienced in UI/UX design
- Familiarity with implementing new functionality
- Able to work quickly and efficiently
- Strong communication skills

Need to create a admin pannel for my my existing app and add some features there.

Please include past work examples in your application. A detailed project proposal is not necessary, but it would be helpful to know about your experience and approach to similar projects. Thank you!