Squarespace website Speed expert needed

I have an existing Squarespace website that needs some improvement in terms of site speed. I need someone who has experience and expertise in optimizing Squarespace websites for speed. I already have the website design finished and do not need custom design services, but if you have skills with customizing existing templates that would be a plus. There is no need for any other services at this time. If you think you’re the person for the job, then please get in touch. Thanks! with need desktop 90+ and mobile also 90+