HeyGen SDK Enhanced Avatar Integration

I'm URGENTLY seeking a skilled developer to create an AI avatar integration using the HeyGen SDK. This avatar should function similarly to the common embedded avatars but with additional session data capture. The button to click to start the avatar, and styling must be editable.

The following session data is required:
- Session ID
- Start Time
- End Time
- IP Address and approximate Location
- User Agent
- Interaction Transcript (both text and voice input/output)
- Interaction Type: Text or Voice
- Avatar Used
- Page Referrer (from which site the embed was loaded)

The data needs to be sent to a backend endpoint (Node.js, Firebase Functions, or REST API) using fetch() or WebSocket for processing on our dashboard. While the dashboard itself is not required, the embed script must capture the specified data.

Additional Requirements:
- The avatar must support multiple languages.
- We will be using a pre-existing avatar.

Ideal Skills and Experience:
- Proficiency with HeyGen SDK
- Experience in data capture and integration with backend services
- Familiarity with Node.js, Firebase Functions, or REST APIs
- Strong knowledge of JavaScript for embedding scripts
- Multilingual support implementation

Please provide a portfolio showcasing similar projects. Looking forward to your bids!