Hello,
I am a senior engineer, with more than 10 years of experience both on systems and network administration.
Regarding network and Sonicwall, I have specific experience managing these devices in High Availability, multiple VLAN deployment, firewall rules, connection to L2 switching and all the standard administration tasks, and also configuring SSL VPN.
I have of course experience in other firewalls like Cisco, Checkpoint and Juniper.
Not sure if windows tasks are required as it appears on the description, but if that is the case, I have been administering windows environments for more thant 10 years, so I can manage this part easily as well.
Many thanks!