Tasks of finalizing the site based on the results of the technical audit of PHP, Vue.js

In the project on seo-optimization of the site of a large insurance company, a number of tasks have been identified that will need to be performed according to the Terms of Reference:

In terms of backend development (PHP):

• Solve together with the customers specialists the appearance of errors 502 and 404 on the site.
• Changing the formation of algorithms for constructing URL addresses.
• Formation of sitemap.xml, robots.txt according to TK.
• Generation of meta tags by templates.
• Reformation of the structure of one of the sections of the site.

In terms of front-end development (Vue.js):

• Optimization of js and css to speed up the loading of site pages.
• Layout of the site for the correct display of the mobile version.
• Changing one of the sections of the site in terms of displaying information and linking the pages of the site.

Remuneration - by agreement, we will discuss it at the meeting.
We work with the self-employed, individual entrepreneurs. We conclude a contract before the work is carried out.

Colleagues, I ask you to indicate the experience in the stack (backend - PHP, front-end - Vue.js)

Thanks in advance.