Add 'Back to Select' Feature

I'm looking for a skilled developer to add a 'Back to Select' feature on our WordPress website. This feature should be integrated on the product pages, enhancing user navigation and experience.

Requirements:
- Add 'Back to Select' button on product pages
- Ensure seamless integration with existing WordPress setup
- Maintain design consistency with current site aesthetics
- Mobile-responsive design is a must

Ideal Skills & Experience:
- Proficiency in WordPress development
- Strong understanding of UI/UX principles
- Experience with product page modifications
- Familiarity with mobile responsiveness and testing

Please provide examples of previous WordPress projects and estimated completion time.