Web Socket Setup on Google Cloud

I'm seeking a seasoned System Administrator to facilitate the functioning of Web Socket on my Google Cloud VPN via Compute Engine. The specifics are as follows:

- My Compute Engine instance is a Linux system, specifically Debian.
- The instance is secured behind a firewall.

Ideal candidates for this project should have a robust background in Linux system administration, specifically with Debian. Experience in configuring Web Socket servers and working with Google Cloud's Compute Engine is a must. Networking and firewall configuration skills will be essential to ensure seamless connectivity while maintaining security.