Website Product Pages Refresh

I need an experienced web designer-developer to breathe new life into the product area of our current site without touching the underlying framework or SEO settings. The goal is simple: visitors must be able to browse and compare our offerings quickly and intuitively.

Here is what I want to achieve:
• Introduce clear comparison sections on every product page so users can line up key differences at a glance. These sections must highlight features and specifications, prices and package options, plus images, sizes, and available variations.
• Apply our new brand logo across every page and asset.
• Tidy up a few layout and copy elements while preserving the existing page hierarchy.
• Ensure the refreshed pages remain fully responsive on both desktop and mobile.

You will be working on the live site, so I expect careful version control and a smooth hand-off. Tell me briefly about similar projects you have handled, the tools you prefer for front-end tweaks, and your estimated cost and completion timeline.