Xero API Integration Specialist Needed

I'm looking for a skilled developer to assist with integration of the Xero API for timesheets into our web application. The integration should allow us to:

- Submit timesheets
- Retrieve timesheets
- Update timesheets

The preferred authentication method is API Key.

Ideal Skills and Experience:
- Proficiency in Xero API
- Strong knowledge of API Key authentication
- Experience with web application integration
- Ability to work with limited documentation

Tech stack-
Node.js (using ExpressJS)
VueJS 3 (CDN)
EJS for rendering views
Tailwind CSS (only using a minimal amount)
CSS style sheets

Back end-
MySQL database
KnexJS for data access