Tech support and refinement of websites on the 1C-Bitrix platform

I have been developing websites on various platforms for more than 10 years. I prefer the 1C-Bitrix platform. I completed training courses and received Bitrix certificates ("Content Manager", "Administrator Basic", "Administrator Modules", "Bitrix Framework Developer", "Composite Site Technology"). I am looking for remote work, on a permanent basis, for technical support and refinement of websites on the 1C-Bitrix platform. I am now retired, so I can devote more time to your tasks without being distracted by other tasks. I have experience in technical support of an online store on the 1C-Bitrix platform (platform updates, refinement, fixing some errors, regular backups, restoring a "crashed" site, that happened too).
In my work I needed knowledge of 1C-Bitrix, MySQL, PHP, Java Script, JQuery, Ajax, HTML, CSS.