create a auto posting to social media plugin or extension

I have a I need someone to build or implement a auto posting plugin or extension, you can use existing lib or framework, what I want is once my website post a new product, it will automatically send post to social medias, such as twitter, facebook, inst, pinterest, etc.the store front and back end are both js.
you need to have deep understand with
tailwindcss
react
nextjs
javascript
typescript
css