clean up code on small local website

Seeking a skilled web developer for meticulous clean-up of my website's codebase, crucial for maintaining its critical SEO. The site cannot be entirely rebuilt due to its established SEO value, so precision in editing and optimizing the existing Bootstrap and PHP framework is essential. The task involves removing redundant or unused code, resolving conflicts evident in recent logs, and enhancing site performance while preserving its core functionality and SEO ranking. Applicants should have proven experience in similar projects, with a strong understanding of SEO implications in code alterations. Please explain what it is I am looking for to the best of your understanding and mention the pink panther if you have taken the time to understand this. I will look out for these bids. Currently hosted on wordpress, customised variation on the sparkling theme / child theme on bootstrap. I would like most error messages resolved within reason and pagespeed score improvement. I expect this would take someone with experience 3 hours and my budget is $100. Should longer be required this can be arranged and paid for if genuinely necessary. Would like someone who is free to start today.