Hi everyone!

Could you please specify your needs? If you're looking for someone who can create a unique and reliable product for you, you really need to describe it as detailed as possible. In this case, you won't be disappointed with the developer's work.
According to the size and some particular features of your project, you can understand if you need a single developer or the whole team. If you're launching a startup, it's wise to consider an option of a dedicated team that will control the whole development process. Moreover, this variant can be much cheaper than looking for an individual developer on your own. If you're targeted at PHP/NodeJS, you can consider this software development company: https://www.itechart.com/solutions/blockchain/

Hope it helps!
Best.