I am looking for a senior developer to build a high-performance automation system for an appointment scheduling portal. The project requires a deep understanding of browser automation and media handling. Key Workflow: Data Collection Portal: Develop or integrate a secondary portal to collect client passport data and a set of 80-90 face-liveness video clips. Media Stream Handling: The automation must use these pre-recorded clips to fulfill the live verification step on the main portal. High-Speed Execution: The system must navigate, verify, and complete the booking within a 5-second window once a slot appears. Anti-Bot Mitigation: Must handle advanced bot detection systems (Cloudflare/Akamai) using unique browser profiles and proxy rotation. Technical Requirements: Expertise in WebRTC and Native Media Stream Overriding. Advanced skills in Python/Playwright or Node.js/Puppeteer. Experience in high-speed, low-concurrency automation. Terms: Fixed Budget: $1,500. No Upfront Payment: Payments will be 100% milestone-based. Proof of Concept: A working demo showing the liveness verification being accepted via injected media is mandatory before the first milestone release.