You must already have a working platform (not from scratch) that we can customize for my needs. I need a web portal and Apps (iOS/Android) that lets both individual sellers and established businesses auction physical products under a single, multi-vendor roof. **Important:** Bids without a demo link and admin access or bids proposing WordPress/WooCommerce will be ignored. Requirements 1. Ready-Made Marketplace System • You must already have a working platform (not from scratch) • Multi-vendor (multiple sellers) • Auction + Fixed Price listings • Basic bidding logic (start price, timer, bid increments) • Hybrid accounts (buy and sell in one dashboard possible) *I am looking for a robust, professional 'Enterprise-Grade' solution. If we use third-party packages, they must be well-documented, industry-standard Laravel packages (like the Bagisto Wallet), not unoptimized standalone scripts."It is a strict requirement that we do not use bloated 'all-in-one' scripts from platforms like CodeCanyon. While these scripts look good on paper, they often suffer from 'spaghetti code', poor database indexing, and excessive overhead that leads to system crashes once the user base starts to scale. *Role-based dashboard views. Private sellers should have a 'Lite' version of the dashboard with essential features only, while commercial sellers get access to the full 'Pro' suite (advanced analytics, bulk uploads, etc.). Keep the private seller UI clean and non-intimidating." 2. Customization to My Needs • Categories and filters relevant to my products • Category-specific fields (simple, not overly advanced) • Modify UI (logo, colors, basic layout) • Language: Initially German only, with future potential for expansion 3. Technical Requirements • Clean, maintainable code • Must run on my server (I will provide hosting) • Basic user authentication • Admin panel to manage all necessary tasks • Source code must be delivered 4. Non-Negotiable Exclusions ❌ No WordPress ❌ No WooCommerce 5. Deliverables • Demo link to test the existing solution before contacting in private chat • Installed and configured marketplace on my server • Short documentation 6. Budget & Timeline • Maximum budget: €3,500 • Realistic solutions only — if you cannot meet requirements in this budget, do not bid In Your Proposal, Include: ✔ Link to demo / live version of your platform with admin access ✔ Technology stack that you used Thanks in advance.