Hello,
I am experienced node developer. I had some project with bitcoins, mostly faucet for coin transfer.
Your description was not complete, can you state what API is needed to integrate, what API do you want to be made for other people to connect you your service.
Anyways, i have lot of experience, about backend node programming, i can make any api rest call that you need.
If your demanding are ok ( i still don't know what api is needed to be integrated) I can meet deadline by august, and sooner.
Contact me if you are interested, certanly i would like to hear from you, what exactly is needed.
Regards