Platforms are good at one thing: producing a vetted shortlist quickly. What they do not provide is a team behind the person, or anyone accountable when the engagement does not work.
If you know exactly what you need built and by whom, a marketplace will get you there faster and cheaper than we will. Come to us when the problem is not yet defined, or when the answer needs an owner rather than a contractor.
One week, fixed fee, written findings, and a straight answer about which model you actually need. Including the answer that it is not us.