Programmer nest.js - permanent cooperation

I am looking for a nest.js backend developer for permanent cooperation on a project. The project is in the last phase before launching into production. The team includes 2 other developers and a tester.

About 20h per week - no less than 15h per week.

Technology stack:

- Nest.js

- Mongodb

- GraphQL (code first approach)

I am only looking for people who already have commercial experience and are able to work independently on a project. I am not interested in agencies.

Please quote me a cost for 80h of work along with a brief description of previous projects.