•Pre－sales － assist in qualifying sales leads from a technical standpoint.
•Sales calls － be the main technical resource on sales calls and answer/ educate the customer on issues ranging from features, specifications and functionality to integration.
•Conversant with networking applications and solutions.
•Post－sales － be the lead technical contact for identified accounts for technical issues and will work closely with the technical support team and engineering to answer, elevate and resolve customer's technical issues.
•Provide assistance to identified customers with post－sales training.
【必須（MUST）】•5 － 8 years experience in technical/pre－sales support as a systems engineer
•5 － 7 years experience in LAN/WAN/Internet services administration
•Strong understanding of the following networking protocols and applications: IPv4/IPv6, TCP/IP, HTTP, DNS, SIP, SMTP, FTP, Syslog, xFlow etc.
•Strong understanding in the following technologies and protocols: RADIUS, PKI, IKE, Certificates, 802.1Q, L2TP, GRE, VXLAN, IPsec, Firewall, SSH, SSL, MD5, SHA1/2, DES/3DES.
•Experience with following technologies: Routing （including BGP, OSPF, EIGRP and RIP）, Switching （including STP）, Wireless, VPN, SD－WAN, Rest API, Network Security such as IPS/AntiVirus, Application Security such as WAF/CASB/Web Proxy, Endpoint Security, Security Information and Event Management （SIEM） and Security Orchestration Automation and Response （SOAR）
•Experience with carrier infra 4G/5G, CGNAT etc.