Looking for a co-founder good at sales.

Not sure if this is the right place but I’m a senior dev with 6 yoe and I have a friend who’s a finance analyst graduated in mechanical engineering. We are willing to pay the price and start something with a 3rd co-founder who is good at sales and potentially marketing too and can prove it.

We don’t have an idea set in stone but we are willing to build something that already exists but better, cheaper, etc. We mainly worked on construction and renewable energy industries.

That 3rd cofounder would of course get 33% of whatever we decide to do and my friend and I are also willing to put money on it if and when needed. It’d be an evenly 3 split for everything.

Maybe I’m over my head but if this is not the place can you help me point to where I might find someone?