As an expert in HTML and PHP with a specialization in websites, I believe I would be a perfect fit for your project. Relations to your task, my professional experience is powrful enough to tackle all the necessary modifications you need. In regard to the backend functionality, addition of a function selecting batches will be executed efficiently and promptly. Fitting this function into your existing system without unnecessary hiccups will be my uttermost priority. Additionally, rest assured, reorganizing the layout structure on the frontend design will also be handled proficiently.
Another advantage you'll gain from working with me is my background in UI/UX design. Amazing coding is not all there is, Your users need to love using it as well. These entrails making it eye-catching while remaining user-friendly so they'll keep coming back for more - and that's where my skills will shine.
Finally, just to mention my database management expertise; This helps me perfectly execute your assignments without any loss or hiccups in data. I can effectively handle any data storage and retrieval needs that may arise as a result of modifying your current project to accommodate the new selections and layouts.