Need to Setup mikrotik ROS firewall on RB4011 for small WISP. I will use nat-masquerade on the clients cpe.

I am looking for an experienced freelancer to implement a secure mikrotik ROS firewall on an RB4011 device for my small WISP. I would like the firewall to be set up with advanced level security. Although I don't have specific requirements in terms of the firewall's configuration, I do have some preferences which I hope can be taken into consideration. Additionally, I can handle the setup of the NAT masquerade on the client's CPE without any assistance. If you believe you possess the necessary expertise to complete this project, please apply for my listing.