I’m building an end-to-end marketplace that connects car-salvage yards with buyers looking for specific parts. The project covers two products working in tandem: 1. A cross-platform mobile app targeting both iOS and Android. Within the app users must be able to: • search the entire catalog of salvaged parts by keyword, make, model, year, and VIN • post new parts for sale from the yard side, including photos, descriptions, condition, price, and inventory count • chat in real time so buyers and yards can negotiate or confirm fitment before checkout 2. A responsive web dashboard for yard owners and internal staff. The dashboard needs robust: • inventory management (batch uploads, stock alerts, status changes) • user management (role-based access, suspension/approval, KYC tracking) • sales analytics (orders, revenue, conversion rates, most-requested parts, export to CSV) I’m expecting clean, maintainable code with modern frameworks—React Native or Flutter for the mobile side and something like React, Vue, or Angular on the web front end are all fine as long as the stack supports real-time functionality (WebSockets or Firebase) and scales. The back end is still open; Laravel, Node, or Django work for me so long as it exposes a documented REST/GraphQL API and pairs easily with a relational database. Key deliverables • Fully functional iOS and Android builds published to TestFlight/Google Play internal testing • Deployed web dashboard with secure login, hosted in my AWS or GCP account • Source code in a private Git repo with readable commit history and instructions to stand up the stack in a fresh environment • Basic unit tests plus a short Loom video walkthrough of every major feature Acceptance criteria – All three mobile features operate without crashes on the latest two OS versions for both platforms. – Dashboard correctly updates inventory counts, user states, and analytics within 5 seconds of any change. – Messages sent from mobile app appear instantly in the recipient’s chat window (≤1 s latency in normal conditions). – Lighthouse score ≥90 for the dashboard’s performance and accessibility audits. If you’ve shipped marketplace apps before and can demonstrate real-time chat plus admin analytics, I’d like to review your approach and timeline.