Mobile Motion & Interaction Designer for Existing Music App

We are developing a polished mobile karaoke companion built around a personal journey: DISCOVER · EXPLORE · RECORD We already have: * an established product map; * defined screen logic and navigation; * polished professional mobile screens; * an approved visual direction; * detailed concepts for onboarding, song organization, recommendations, voice analysis, and a personal Voice Universe. We are not looking for someone to redesign the entire product or create another general UX map. We need an experienced mobile motion and interaction designer who can take our existing polished screens and make the experience feel distinctive, alive, and emotionally engaging through: * restrained screen transitions; * subtle cosmic atmosphere; * animated onboarding; * reticle scanning and lock-on effects; * voice-mapping progress animation; * responsive VU meter and waveform behavior; * dimensional Voice Universe reveals; * constellation-sharing animation; * subtle microinteractions and state changes; * reduced-motion alternatives. The product should feel like a refined futuristic karaoke navigation system. It must not become: * a Star Trek-style interface; * a cockpit HUD; * a video game; * a heavily decorated science-fiction app; * a generic music-streaming product. The practical mobile interface must remain clear, modern, and dominant. Cosmic imagery and animation should be used selectively at meaningful moments. Initial paid assignment The first milestone will be a small paid motion-design test using one or two existing screens. The test may include: 1. a short transition between screens; 2. restrained background movement; 3. one reticle search-and-lock animation; 4. a Voice Universe or voice-analysis motion concept; 5. a reduced-motion alternative; 6. a brief technical recommendation explaining whether the production version should use native animation, Rive, Lottie, After Effects assets, advanced Figma prototyping, or code. This is not a request for unpaid speculative work. If the test is successful, the designer may continue screen by screen through the broader product. Required experience Please apply only if you can demonstrate strong work in several of the following: * mobile application motion design; * interaction design; * Figma; * Adobe After Effects; * animated onboarding; * data-driven animation; * audio-responsive interfaces; * developer-ready animation handoff; * iOS and Android performance considerations. Experience with music, audio, karaoke, voice analysis, or immersive data visualization is helpful but not required. What to include in your proposal Please provide: 1. two or three examples of your best mobile motion or interaction work; 2. your specific role in each example; 3. the tools used; 4. whether you created production-ready assets or only concept animations; 5. how you would keep this product visually restrained rather than excessive; 6. your hourly rate or preferred fixed-price structure; 7. your current availability; 8. whether you can work from an existing Figma design system rather than redesigning the full application. Please begin your proposal with the words: SUBTLE MOTION This confirms that you read the complete description. Project principles * Preserve the existing polished UI. * Motion must help explain product state or advance the story. * Restraint is more important than spectacle. * The app must remain practical and easy to use. * Major changes to product logic require approval. * Work will be reviewed and approved one screen at a time. * Confidential project materials will be supplied after an Upwork contract is active.