UPnP Port Forwarding with WIZnet W5500 Chip Configuration and Security Implementation

I need a freelancer to help me configure automatically open a specific port on the router using UPnP, to enable external public ip access to a device or service on the local network. The freelancer/developer will need to possess skills in low-level programming and network configuration to write the code required to achieve this functionality, as well as experience in implementing secure communication protocols to protect the network from potential security risks. The computing power requirements for this task are minimal, and the W5500 chip can handle this functionality. The goal is to have the W5500 chip open the port on the router with upnp, so that another device on the local network can be accessed externally using the same port.