ATTENTION: I am looking for a high-performing Individual Lead Developer. No agencies. No task-completers. If you are unreliable, unpunctual, or expect to be micromanaged, do not apply. I need a technical partner who takes ownership and is hungry to build a world-class product. The Project A sophisticated, closed-community platform (Stealth Mode) with high-end UI/UX. The Figma designs are complete. I need you to implement them with a "premium" feel—meaning fluid animations, micro-interactions, and flawless performance. Detailed Core Scope: Security & Access: * Whitelist System: Registration restricted to specific domains/verified users only. Strict German GDPR (DSGVO): EU-based infrastructure, "Privacy by Design," and full data encryption are non-negotiable. Social & Communication: Real-time Messaging: High-speed 1-on-1 Chat and Group Messaging functions. Friends System: "My Network" management (adding/removing friends, social graph). Groups: Dedicated spaces for categorized communication and file sharing. Organization & Productivity: Event Management: Full Calendar integration. Create events, send invitations to friends/groups, and manage RSVPs. To-Do System: Integrated task management for users. Document Repository: System to upload and categorize PDFs/Images within groups. Gamification & Logic: "The Battle" Logic: Real-time competitive features where users/groups compare activity stats via live leaderboards. Matching Algorithm: Fast, swipe-based logic for community discovery. Native Features: iOS/Android Home Screen Widgets and full Localization (DE, EN, FR, ES). My Non-Negotiable Terms: Fixed Price Only: I do not work on an hourly basis. This project is structured via Fixed-Price Milestones. Total budget certainty is required. Proven European Experience: You must provide links to at least 2 live apps in the European/German market. I need to see that you understand EU quality standards. Absolute Reliability: Flawless English and 100% punctuality for calls are mandatory. If you miss a meeting without notice, the collaboration ends immediately. How to Apply (The Professional Filter): To ensure you have the attention to detail required, you must answer the following: Start your application with the word: "INTEGRITY". Portfolio: Provide links to 2 apps you've built for the European market. Logic Question: How would you architect the Whitelist and Friends system to ensure it remains fast as the user base grows? GDPR Question: Technically, how do you handle a "Right to be Forgotten" request across a database involving shared groups and leaderboards? Timeline: Can you commit to delivering a production-ready MVP in 6 weeks on a fixed-price basis?