Swift UI/UX Revamp for Existing Website

As the owner of an existing website, I'm immediately seeking a proficient UI/UX designer who not only has a discerning eye for modern aesthetics but also knowledge in coding. The key tasks required are:

- Refinement of the website's navigation to make it more straightforward
- Modernization of the website's ambiance to keep up with the latest trends
- Responsiveness improvement across various mobile devices

Completion of these enhancements is required as soon as possible. I'm looking for a professional who has extensive experience in UI/UX design and coding, with a portfolio demonstrating their expertise in creating intuitive, stunning and responsive interfaces. Lunching a project with a quick turnaround time is an additional asset.