Facebook API Integration for Page Posting

I'm looking for an expert in Facebook API who can help me set up a system to post both text and static images to my Facebook page. The posts should be able to be sent immediately or scheduled for a later time.

Key Requirements:
- Setup of Facebook API for posting
- Provision of a Postman collection for easy testing and usage
- Implementation of both immediate and scheduled posting functionality

Ideal Skills and Experience:
- Extensive knowledge and experience with Facebook API
- Proficiency in using Postman for API testing
- Prior experience with social media automation