Setup a proxy server

I am looking for a freelancer to help me set up a proxy server for my existing business. I am open to suggestions for proxy server software as I do not have a preferred one. The main purpose of the proxy server is to increase security.

Skills and Experience:
- Experience in setting up proxy servers
- Knowledge of different proxy server software options
- Understanding of security measures and protocols
- Ability to recommend and configure the most suitable proxy server software for the business' needs