Virtual Piercing Try-On WebAR Development

We need an experienced WebAR / computer vision developer to create a browser-based virtual piercing try-on. Users should open a webpage on iPhone/Android, activate the camera, and see a virtual stud realistically positioned on their ear. The key challenge is reliable ear/eartlobe tracking while the head moves. This is NOT a request to copy existing commercial software. We want an independently developed solution using open-source or approved licensed technology. FIRST MILESTONE – PAID PROOF OF CONCEPT Deliver a working browser demo that: * Uses live mobile camera * Detects/tracks the head and ear * Places a virtual 2–4 mm stud on the earlobe * Keeps the stud reasonably anchored during head movement/rotation * Works on iPhone Safari and Android Chrome Possible stack: MediaPipe, Three.js, WebGL, TensorFlow.js, React, OpenCV, WebAR/WebXR or another recommended approach. If successful, developer may receive the full project including: * Multiple piercing locations * Multiple studs simultaneously * Jewelry/product catalog and SKUs * Ear and future nose visualization * Saved piercing looks * QR/customer-specific links * Multi-tenant customer accounts * Master admin dashboard * Customer activation/suspension * Usage analytics REQUIREMENTS * Strong WebAR/computer vision experience * Client-controlled GitHub/GitLab repository * Client owns all custom source code * All third-party libraries/SDKs must be disclosed * No paid/proprietary dependency without approval * Code must be maintainable by another developer TO APPLY Do NOT send a generic proposal. Please provide: 1. Links/screenshots of relevant AR or computer-vision work 2. Your proposed technology stack 3. Your FIXED price for the initial proof of concept 4. Estimated time to complete the POC 5. Estimated range for the full MVP IMPORTANT SCREENING QUESTION: How would you reliably anchor a virtual stud to the earlobe during head movement when standard facial-landmark systems provide limited detailed ear landmarks? Applications that do not answer this question will not be considered.