Justus Vieweger

Product Manager @CarOnSale

Berlin, DE

Product Manager Logistics, Payments & Invoicing July 2025 – PresentI own the product strategy and execution for payment processing, vehicle logistics, and invoicing systems across our European B2B marketplace.Key Responsibilities:• Manage financing product strategy and integrations with partners• Own payment processing flows from buyer checkout to seller payouts• Drive checkout conversion through A/B testing and funnel optimization• Ensure tax compliance and invoicing accuracy across multiple countries• Optimize transport provider network across EU markets• Coordinate cross-border logistics operations and delivery trackingProduct Manager Vehicle Inventory November 2023 – June 2025I owned the vehicle intake and data quality across our web and mobile platforms, ensuring seamless onboarding and presentation of inventory.Key Responsibilities:• Owned vehicle inspection iOS app used by internal teams and partners• Led the integration of the AlphaController SaaS (Acquired by COS in 2024)• Managed product detail page (PDP) experience and optimization• Oversaw third-party data integrations and APIs for vehicle intake and data• Ensured data quality and accuracy across vehicle listings• Coordinated with external inspection partners

Freie Universität Berlin

Bachelor of Science - BS, Economics

Tilburg University

Master, Infomation Management

University College Cork

M.Sc. Design and Development of Digital Business, Information Technology