Greetings,
I hereby offer my services for your project, and I'll make your site able to load .js and .css asynchronously and will do any required tasks according to requirements.
I am expert web developer with hands on experience on multiple platforms, I have 100 work delivery ratio and have 100 satisfied clients.
I invite you to review my work and check reviews section of my profile to see what my happy clients say about my work.
Best Regards.