I need expert PHP developer start work immediately for 4hrs

I need an expert who is good at php and css. Its beneficial to also be good at Opencart platform. The work needs to start immediately for couple of hours and continue tomorrow as well. No time wasters. No milestones. The payment will be made in full once the work is completed today and will give more work tomorrow. Again, no time wasters and the work needs to begin immediately for some hours.