Senior Network Security Analyst
Core
Independently analyze and resolve complex network and security incidents for Zeiss Cloud Proxy, VPN, CDN, WAF, SD-WAN, RAS, and SSE services to ensure service stability.
Role type
Senior L3 Network Security Analyst (Incident Response & Operations)
Builds
Zeiss Cloud Proxy, VPN, CDN, WAF, SD-WAN, RAS, and SSE services
Domain
IT Services / Network Security / Cloud Infrastructure
Required skills
Incident analysis, root-cause analysis, troubleshooting, documentation, network fundamentals (OSI, TCP/IP, routing, switching), web/app-layer technologies (HTTP/HTTPS, TLS/SSL, DNS, caching), network troubleshooting tools (tcpdump, Wireshark, WinMTR, nslookup, netstat, traceroute), firewall rule checks, operating systems (Windows, Linux), browsers (Edge, Chrome, Firefox, Safari)
Preferred skills
WASP (Akamai WAF/CDN), Zscaler (ZIA/ZPA), SD-WAN (Velocloud/MPLS), Grafana, Tencent monitoring tools
Technologies
Akamai CDN, Akamai WAF, Zscaler Internet Access, Zscaler Private Access, Velocloud, MPLS, Fortinet firewalls
Responsibilities
Monitor and troubleshoot Zeiss Cloud Proxy, VPN, CDN, WAF, SD-WAN, RAS, and SSE services using logs, monitoring platforms, and packet captures; Act as a technical escalation point and role model within the team; Drive incidents to resolution by collaborating with Service Owners, internal teams, and external providers; Perform advanced troubleshooting and root-cause analysis for CDN performance degradation, latency, access failures, and WAF false positives/negatives; Independently troubleshoot complex connectivity, policy, authentication, and performance issues using logs, packet captures, and endpoint data; Support day-to-day configuration, monitoring, and basic troubleshooting of edge connectivity, routing behavior, and business policies; Contribute to SOP/KB improvements and document operational learnings; Mentor junior engineers and provide technical guidance; Work in 24×7 rotational shifts and provide on-call support
Seniority
Senior, hands-on IC
