BalletSports is building the AI operating system for movement studios. Branded curriculum + voice-AI in-class runtime + immersive environment, sold as one licensed product to studio operators. Current state: €12K/month B2B contract signed (live since Oct 2025), 12 unsolicited operator inbounds in 48h, €1.37M of self-funded revenue from 12 years of studio operations, pre-seed €390K round in motion. Looking for a technical co-founder who has shipped production AI — voice and retrieval today (Whisper, Deepgram, semantic search), computer vision for Y2 movement correction. Honesty first. Equity 20-30%, 4-year vest, 1-year cliff. Remote-EU. oksana@balletsports.de