Looking for VPN developer on Linux environment

I am looking for a VPN developer with experience in the Linux environment, specifically on Ubuntu. The project requires expertise in IPSec, as the client needs a VPN with the specific purpose of secure remote access. The ui is made by html and javascript.

Ideal Skills and Experience:
- Proficiency in Linux, particularly Ubuntu
- Strong understanding of IPSec protocol
- Experience in developing secure remote access VPNs