You want someone to work for free, with no equity and no long-term commitment? Good luck!
There seems to be a lot of disagreement in terms of the most efficient process to follow here.
Personally, I believe you first need to build a prototype. Then go find some investment capital to help build your MVP. Contrary to what others say, the MVP does not need to be scalable. It simply needs to allow you to bring on your first batch of paying customers while you fund development of the next phase.
People get too attached to the code they have built. It's like building an airplane or car and refusing to let go of the wood and plaster models you built early-on, and insist they be used in the final products.
Whether you want to admit it or not, your first design or two WILL BE PROTOTYPES!!! It's guaranteed!
That's simply because there are too many unknowns right now. I don't care how much time you've spent modeling and tweaking ... until you've got PAYING CUSTOMERS (or at least ACTIVE customers), you have no real sense of what they're going to want.
People are wont to say they'd use or pay for something, then when faced with the choice, go the other way. Expect that. Heading straight to your MVP is often foolish. And believing that your MVP is going to scale into your final product is also foolish.
Focus on "quick and dirty" -- get something done fast so you can get feedback and determine whether you need to "pivot or persevere". Skipping a prototype, then pouring your time, effort, and money (or equity) into a prototype you're calling your MVP where you're also spending a lot of effort tuning it to scale when you don't even know what direction to scale it in is just wasteful.
I'm one of many tech resources here who can do this kind of work ... but I'm not independently wealthy and I've got rent to pay and other bills. I cannot spend my time working for free on project after project hoping that in a few years I'll make something back. I need to be paid NOW.
Unfortunately, unless you can find someone who's either living with their parents, was recently fired and has a bunch of money in the bank, someone who has no life and wants to spend time on your project after 10 hours at work, or just doesn't need to worry about income for a year or two, you're going to have to come up with a way to pay someone for their contribution to YOUR FUTURE WEALTH.