Full-Scope SEO Optimization Needed

I’m looking for someone who can take full ownership of my site’s search performance. Every element—from the copy on core pages to weekly blog posts and detailed product descriptions—needs to be tightened up so we climb the rankings and stay there... (Budget: $15 - $25 USD, Jobs: Agentic AI, Blog Writing, Content Strategy, Conversion Rate Optimization, Internet Marketing, Link Building, React.js, Search Engine Marketing, SEMrush, SEO)