Hi,
I'm a professional PhpFox developer from Vietnam. I have been working with this for more than 4 years, I have worked for some companies in Vietnam like Younet, CEOFox. I can work with PhpFox from version 1.6 to 4.x
I have read your project requirement and agree to do example task before you award. You can find my past PhpFox job at https://www.freelancer.com/u/JimmyHoang
I can create theme, plugins, custom for PhpFox as your requirements, can also upgrade a plugin from V3 to V4 without modify the Core files.
I will be more than happy to do this job for you, Not just a freelancer task, I also want a long-term coporation
Best regards and have a great weekend.
Phu