• Own the post-sale handoff from Sales through seller launch; ensure sellers are onboarded, trained, operationally ready, and running their first successful auctions. • Educate sellers on Marketplace workflows, listing best practices, inspections, pricing, and auction cadence to ensure they are set up for repeat success. • Serve as the primary point of contact for a portfolio of Marketplace sellers; manage day-to-day communication, planning, and ongoing support. • Proactively monitor seller health, engagement, and auction activity to identify risk and intervene before churn or inactivity occurs. • Work with sellers to improve auction outcomes through better inventory mix, listing quality, timing, pricing strategy, and operational readiness. • Use Salesforce to execute playbooks, track seller health, and report on activation, retention, and engagement metrics. • Identify qualified opportunities for additional Autura products or services and route them to the Sales team. • Handle cancellation requests, objections, and seller issues; coordinate with Ops, Product, and Finance to resolve blockers. • Build relationships with decision-makers, champions, and day-to-day users within seller organizations. • Partner with Sales, Marketplace Operations, Product, and Marketing to deliver a seamless seller experience from launch through ongoing operations. • Capture seller feedback, obstacles, and success stories and relay them to the Director of Customer Success to continuously improve the seller journey.