Technical SEO Boost Needed

My surf-activity website is ranking lower than it should, and I have narrowed the issue down to technical SEO. I want a specialist who can audit the codebase, identify the speed bottlenecks, and implement clean, measurable fixes that move the site up in Google... (Budget: €30 - €250 EUR, Jobs: Performance Tuning, PHP, SEO, Web Development, Website Audit, Website Design, Website Optimization, WordPress)