Senior PhP developer for Laravel or Wordpress website

We are developing websites based on Laravel/WordPress. We are looking for a senior PhP developer with a CS major as background. You should be familiar with various debugging tools like Xdebug so that issues can be identified on the fly with breakpoints enabled. You should also be extremely familiar with mysql and its trigger implementations, foreign key configurations, etc to make sure db read/write is proper and there'll be no data corruption in the future. The current implementation is only for one single server. We need you to be able to improve it so that it is scalable and can run on multiple servers. You should be familiar with the development of PhP websites that run on many servers. You need to continue the development and fix all issues raised by our QA team. We want to complete the project in about two to three weeks. You will be working together with other senior developers on these projects. The work MUST be done remotely using teamviewer or Anydesk. We expect you to work at least 20 hours a week. America time zone is preferred. This can be long-term job if you can handle the work properly. So we can pay you a fixed amount of wage every month. We can pay you based on fixed price or hourly if you're good at the job.