Partner day-to-day with engineering, ML, data science/analytics, design, and research to deliver high-quality features; collaborate with PMM, sales, and policy/integrity as needed for launches. Work closely with PM peers across Ads Quality (e.g., retrieval, ranking, pacing/budgeting, measurement/incrementality, integrity) and with PMs on front-end presentation/components (e.g., modules, formats, surfaces) to manage dependencies, define APIs/contracts for your area, align on experiment design and guardrails, and coordinate GTM and feedback loops. Facilitate roadmap and requirements reviews, keep shared artifacts (roadmap, PRDs, dependency trackers) up to date, and proactively surface risks, decisions, and changes.