Divi website functionality and site optimization

I need my divi website optimized. Checked for mobile compatibility, nav bar functionality, etc. Need an expert to optimize it, find the little bugs and glitches, and fix or improve. Needs to be optimized for chrome, safari, edge, and firefox.I have noticed some small things here and there. Need this done ASAP. Will need ongoing work like this for the right candidate.

1.) Available in Pacific Standard Time (PST) Callifornia USA time
2.) Optimization expert
3.) Divi Expert
4.) HTML, Jave, PHP, website development expert
5.) Speaks fluent english
6.) Price fair for long term work