Nest.js Developer for MyDHL API Integration

I'm looking for an experienced Nest.js developer to integrate DHL’s MyDHL API into our backend. You'll focus on building out the API calls while I handle the frontend work. The Validate Address endpoint is configured. Postman file will be shared. The last task would be to authenticate between a Next.js frontend and a Nest.js API with JWT token.

Please provide your availability and cost estimates for these tasks.

Priority API Calls:
Create shipment
Pickups
Get rates
Proof of delivery
Address validation (DONE)
Upload invoice/commercial invoice data

Requirements:
Experience with Nest.js
Experience with setting up token
Familiarity with DHL API or similar shipping APIs is a plus

https://developer.dhl.com/api-reference/dhl-express-mydhl-api?language_content_entity=en#get-started-section/