Hello,
It seems you're looking for a backend developer for a Node.js project about cryptocurrencies.
I have worked with Node.js for a while now, and I've only used Typescript with it. I've never worked with a cryptocurrency API before, but I have done some ETH mining in the past so I know how the process works.
I've been looking for opportunities to work with cryptocurrencies, as they are a rising technology, and this seems like a great opportunity. I would be glad to work on this project.
Looking forward to this project.