Looking for an ad-tech JavaScript engineer with real experience in pop / pop-under ads. We run a JS pop wrapper on streaming sites and need help controlling pop frequency without breaking other scripts (banner ads, navigation, pop-under from other networks). We must use script-based demand (no direct links) and cannot override global events. This is a real-world, messy traffic problem, not a clean frontend project. If you’ve worked with pop ads and understand trade-offs, let’s talk.