Hi,
I have gone through your requirement and i can install and configure Isotope filter on your squarespace website according to requirement 1 day.
I have been working as a full stack developer over last 5 year and expertise in Laravel, wordpress customization and theme design , woocommerce store development, magento, Laravel, 3dcart , wix , Shopify, big commerce, 3d cart, Mobile App development, responsive web design, PSD to Html.
Thanks for reading, I'm looking forward to hearing from you!
Thanks
Balwant