Lead Product Designer - AI Trainer - Freelance - 8-20hrs/week - Remote

Updated: 16 April 2026 Freelance | 8–20 hrs/week | Remote (EU/UK) Are you an experienced product designer who instinctively spots gaps in design reasoning and understands the complex realities of product design practice? Do you have 8 to 20 hours per week available alongside your main job or consulting projects? Join us in shaping how AI understands and applies product design expertise at scale. About the Role 10x.team connects expert freelancers with leading AI labs building next-generation models. We are looking for knowledgeable product designers based in the EU or UK to enhance the accuracy, depth, and real-world relevance of AI-powered design systems. What You Will Do - Review and refine AI-generated outputs related to product design, design processes, documentation, and practical aspects of product development - Evaluate AI responses for creative quality, practical application, and compliance with real-world requirements - Draft realistic product design scenarios based on your direct professional experience - Create scenario variations from different perspectives (e.g. product designer, client, user, or stakeholder) - Identify gaps, oversights, or weak reasoning in AI-generat