Update features/fix up website, update chrome extension/create firefox extension

I'm looking for someone who can help me add extra features and fix up my website. On top of that I also need someone who can update features in my google chrome extension, aswell as build me a firefox extension if possible and help the code get setup on crossrider. I need new features added to my website every so often so I would like someone willing to stick around for future updates. When we discuss details I will give you website URL so you can assess what work will need to be done. I prefer to pay on an hourly basis instead of per project because I will be adding features as we go along that we didn't discuss at beginning.