Social Media API Integration Expert (Facebook, Instagram, LinkedIn, Twitter/X)

I have purchased a ready-made SaaS script that allows users to schedule and post content to major social media platforms (Facebook, Instagram, LinkedIn, and Twitter/X). As the owner, I need help completing the API integration for these platforms so that my system can successfully connect and post on behalf of users.

The script includes detailed developer documentation on how to create the required social media apps and set up API keys/secrets. Your task is to follow this documentation and ensure proper integration for each platform.

Platforms to Integrate:
Facebook (Pages & Groups)

Instagram (Business accounts via Facebook Graph API)

LinkedIn

Twitter/X

Requirements:

Proven experience with social media API integrations, especially Facebook Graph API, Instagram, LinkedIn, and Twitter/X.

Ability to handle authentication, permission scopes, and posting functionality.

Must follow the provided documentation from the script developer.

Good communication and documentation of steps taken.

Payment Terms:

I will pay separately for each successful integration.

For example: if you successfully integrate Facebook first, you get paid for that — even before the others are done.

Payment will only be released upon a working connection and successful post to the respective platform.

To Apply:
Please include:

Examples of similar API integrations you’ve done.

Your estimated time to complete each platform.

Any questions or clarifications you may have.