Node.js developer to code service similar to ipinfo.io

Need an experienced node.js dev to build a small service that interacts with an external API and shows results to the user.

1. Performance is very important. So everything must be optimized and API requests cached correctly

2. Site consists of frontend and json API

3. Rate limit requests per IP

4. Limit requests per API key

5. Long term plan for user panel and billing

Priority is to deploy the service live for free for everyone to use and work on bug fixing and new features.

Later user accounts and billing will be added as well.

The job is for backend and design can be provided in html. BUT if you are able to also do the frontend that is a big bonus. Note if you can.

Thanks