Qualified applicants may inquire about visa sponsorship (including transfer of a current H-1B visa), but the company does not support or sponsor O-1, F-1, or J-1 visas, or candidates who require commencement of an H-1B "cap case" petition for future work authorization. Strong networking knowledge (TCP/IP, DNS, DHCP, VLANs, routing, TLS, VPN, proxy, firewall) and proven troubleshooting skills.