Custom Automation Integration (Node.js / Docker )

Seeking an experienced Greek developer for a custom automation integration using Node.js and Docker.
Need a ready-made, tested script/solution for WebRTC Clean Feed extraction (ambient sound, delay < 1s) from specific realtime data platforms via residential proxies.
The Deal: $600 fixed price for the source code + $70-80 monthly retainer for maintenance.
Requirements: Source code, installation guide, and a brief documentation.
Mandatory Condition: Live Proof via Share Screen (Discord/Zoom) to verify real-time latency < 1s before any payment or milestone release.
Looking forward to a direct screen share session to finalize the deal immediately.