Network Engineer for Secure Proxy & Gateway Architecture

Network Engineer for Secure Proxy & Gateway Architecture Seeking an experienced network engineer to build and deploy a secure proxy system using 3X-UI (MHSanaei) on a remote server and sing-box on a Raspberry Pi client gateway, featuring automatic protocol failover between VLESS-Reality and Hysteria2. Tech Stack Server: 3X-UI (MHSanaei fork) Client: sing-box on Raspberry Pi Protocols: Hysteria2, VLESS-Reality Project Phases 1. Proof of Concept: Set up development client environment, configure remote nodes, and deploy sing-box locally to verify routing and failover. 2. QA Deployment: Deploy a single QA server and connect the Raspberry Pi gateway for real-world testing. 3. Production Deployment: Scale to multiple production server nodes and configure the Raspberry Pi gateways for high availability. Required Skills - Strong Linux admin skills (Ubuntu / Raspberry Pi OS, systemd). - Familiarity with modern tunneling, proxy tools, or custom routing architectures. - Networking knowledge: iptables, nftables, and setting up transparent proxies / TUN interfaces. - DevOps experience with infrastructure automation, repeatable deployments, and configuration management across environments. - Experience installing and managing server control panels or similar web-based management tools on remote servers. - Experience troubleshooting and deploying networking tools on ARM/Raspberry Pi hardware. Deliverables & Future Work - Fully configured 3X-UI servers and optimized Raspberry Pi sing-box configs. Setup documentation. - Familiarity or prior experience working within the China tech/network ecosystem is helpful. Potential for long-term support and maintenance after deployment.