I hire people via upwork and freelancer to do a lot outsourced non-core tasks for my startup. One of the traits I look for is an immovable demand that 30-50% of

I hire people via upwork and freelancer to do a lot outsourced non-core tasks for my startup. One of the traits I look for is an immovable demand that 30-50% of a project be paid upfront. It's a s* test that is a far better indicator of experience and competence than any flashy portfolio and ratings.