Hello I can devote 20 hours in a week.
I have gone through project description and it looks like that you want a person having good technical skills but not bound to few technologies. He should be an all rounder having learning aptitude, good analytic skills and have strong grasping power.
If this holds true then I am the guy you are looking for.
Brief info about me
I am an Individual Full Time Freelance Programmer having 6+ years expertise in MS Technologies. Prior to working as freelancer(before 2014), I was associated with Microsoft & AMEX as vendor and have worked on various projects/applications for them.
There are few things which differentiate me from other guys here i.e..
1. I have good analytic skills.
2. Strong Grasping Power.
3. Write quality code using Best Practices.
4. Not a company but if required I have some good guys who can just like me.
PS: My hourly rate seems to be high then other bidders here but here I am confidently saying that when it comes to programming, I am almost double of any other coder so in long run I appears to be cost effective.