Senior Automation Engineer for Traffic Simulation & Referrer Spoofing I am looking for a specialized Automation/Growth Engineer to build a custom Traffic Orchestration System. The goal is to simulate "Viral" traffic spikes to specific URLs to test search engine ranking signals. The Technical Challenge: This is not a simple headless browser task. You must solve the problem of taking high-volume, raw human traffic (via Pop-Under/PPV APIs) and "cleaning" it through a Bridge/Redirect layer to spoof specific social referrers while maintaining session integrity. Core Deliverables: - Referrer Bridge: Build a script/server that receives raw hits and uses a "Double Meta Refresh" or similar logic to spoof document.referrer (e.g., masking traffic to appear as if it's coming from t.co, reddit.com, or facebook.com). - Traffic Curve Engine: A scheduler that allows me to configure "spikes" (e.g., 5,000 hits in 2 hours) with a natural ramp-up, peak, and decay pattern. - Behavioral Simulation: Implement a "Session Keeper" or interaction layer (Overlay/Iframe) to ensure real users stay on the page for 30s+ to avoid high bounce rates and trigger "Engaged Session" signals in GA4. - Stealth & Fingerprinting: For the bot-driven portion of the traffic, ensure 100% bypass of TLS fingerprinting and WebGL/Canvas detection. - Configurability: A simple dashboard or Google Sheets integration to set: Target URL, Geo-location, Device Mix (Mobile/Desktop), and Scheduled Burst times. Requirements: - Expertise in Playwright, Puppeteer, or Node.js for web automation. - Deep understanding of HTTP Headers, TLS Handshakes, and Browser Fingerprinting. - Experience with Residential/Mobile Proxy integration (BrightData, Oxylabs, etc.). - Experience with Ad Network APIs (PopAds, PropellerAds) is a huge plus. - Ability to build modular, clean code (not just throwaway scripts). How to Apply: - Explain how you would specifically handle Referrer Spoofing so it shows up as "Social" in GA4. - What is your strategy for ensuring a "Human" from a pop-under doesn't bounce immediately?