GAM 360 + Prebid Specialist to Optimize Yield & Fill Rate (Ongoing)

We run a network of content websites and need an experienced Ad Operations / Programmatic specialist to optimize our Google Ad Manager 360 setup. Monetization hasn't been our main focus until now, so there's room to improve. What we need help with: - Audit and optimize our GAM 360 setup (ad units, targeting, price priority, line items, unified pricing rules, protections) - Improve fill rate, eCPM and RPM — diagnose where we're losing revenue and fix it - Implement / tune header bidding: Prebid.js and Amazon (TAM/UAM) - Guide our internal dev team on exactly what to implement (you tell them what to do, they execute) - Hands-on technical work when needed: debug ad tags via DevTools/console, read JavaScript, inspect ad requests, find implementation bugs - Build an invalid traffic (IVT/SIVT) detection and protection system This is not a "manage the panel" role. We need someone who understands the technical side, can open the console and debug, and can direct the work — not just operate. Engagement: We're looking for a long-term relationship with good cost-benefit for both sides.