I’m building a 4G/LTE-based mobile proxy farm and need the full stack—hardware orchestration, carrier‐grade networking, and software automation—designed and deployed. The finished system must let me create, rotate, and retire individual proxies entirely from the command line, without a GUI, while exposing logs and basic health metrics in plain-text or JSON formats that I can pipe into existing monitoring tools. Key requirements • Use 4G/LTE modems or tethered devices to provide residential-grade IPs. • Supply provisioning scripts (Bash / Python or similar) so a fresh machine can be imaged, pick up attached modems, register them, and start serving traffic. • Implement IP rotation on a schedule or on-demand via CLI flags or API endpoints that can be called from the shell. • Include safeguards against carrier lockout (fail-over, IMEI swap, cooldown timers). • Document exact hardware BOM, OS choices, and steps so the farm can be scaled by repeating the process. Acceptance criteria 1. I run a single install script on Ubuntu Server and receive a prompt showing connected modems and their current public IPs. 2. The command “rotate-ip <deviceID>” returns a new IP within 90 seconds. 3. Concurrent requests from at least 50 threads per modem remain stable for 30 minutes during load testing. 4. A concise README explains how to add more modems and replicate the cluster. When replying, include a detailed project proposal that covers architecture, recommended tools (e.g., NetworkManager, usb_modeswitch, socat, 3proxy, TinyProxy, or alternatives), a timeline with milestones, and any prior builds that prove you have done this before.