Frontend / Backend Developer for QR-Based Media Capture Workflow

I'm looking for a developer to help build and refine a mobile web workflow that connects a QR code scan to a short recording session and automated delivery of the resulting media file via email. The system runs on a VPS and integrates with a third-party email marketing platform via API.
Scope of Work:

• Improve and stabilize an existing mobile web flow (QR → form → recording → processing → email delivery).

• Implement reliable email capture with validation and a fallback re-enter email option.

• Ensure session persistence so users can return to the page after recording.

• Connect backend events to an email automation platform via API/webhooks.

• Optimize for simplicity and reliability in a self-serve kiosk environment.
Requirements:

• Strong JavaScript (frontend) and backend experience (Node, Python, or similar).

• Experience with REST APIs and webhook integrations.

• Familiarity with VPS deployments and file handlin...