Help needed with Dutch AI study platform (PDF upload, AI flows, frontend fixes)

Hi Atul, I’m Matteo, founder of LeerLab, a Dutch-language AI study platform for students in Belgium and the Netherlands. The project is in the really early stage. I’m looking for a skilled developer who can help me stabilize and improve the technical side of the platform. I came across your profile and I think your experience with AI integrations, LLMs, and full-stack development could be a great match. Here’s what I need help with: Immediate fixes 1. PDF upload bug - Currently fails with “Invalid presigned URL response” - Needs to work across multiple tabs: summaries, flashcards, exams - Files should be stored correctly (Supabase or Firebase) 2. New accounts start with dummy data - I want all new users to start with zero content - No fake courses, no pre-filled flashcards or stats 3. AI flows need to be stable and Dutch by default - The AI assistant currently starts in English - It must default to Dutch (the entire platform is Dutch-language) - AI should generate summaries, flashcards, and exam questions from uploaded PDFs Next steps (if collaboration goes well) - Improve planner logic - Build a customizable 3D avatar tab - Optimize dashboard with study stats - Possibly help with gamification and spaced repetition logic Important notes - The platform is fully in Dutch, even though we communicate in English, all frontend outputs must be in correct Dutch - I’m open to a longer collaboration if the first sprint goes well Would you be interested in helping me with this? If so, I’d love to start with a small sprint focused on the PDF upload fix + AI language default. Let me know your availability and how you prefer to work. Thanks in advance, Matteo