Ask HN: What are your greatest tips to hire freelancers?

Don't take their word that they can do something. Never hire without proof of their skills and examples of their work.

Also, communication is a big factor in hiring a freelancer. If you are outsourcing something to someone in another part of the world, watch out for timezone differences as well as making sure the person is a good communicator.

It's also just good general advice to always have them invoice you, just so you can have it on record for tax purposes.

Have a contract ready as soon as possible. Don't leave your freelancers hanging. It's better for both of you if you are under contract.