Network Security Engineer
On-siteTokyo, Tokyo, Japan
Job Summary
Monitor and maintain a single-tenant Prisma Access deployment using Panorama and GlobalProtect configurations, performing daily health checks, troubleshooting tunnels, and managing rule updates under strict change management controls. Triage and resolve security incidents via ServiceNow, analyzing logs from Cortex Data Lake and Splunk to independently handle P3/P4 issues while supporting senior engineers on critical P1/P2 events. Execute planned maintenance windows, generate operational reports, and maintain comprehensive documentation including SOPs and audit artifacts for compliance. This role requires native-level Japanese proficiency for customer communication and business-level English, with a Bachelor's degree and 2–4 years of network security operations experience.
Required Qualifications
- 2–4 years of experience in network, security, or infrastructure operations
- TCP/IP, subnetting, routing fundamentals, DNS, DHCP
- NAT, VPN fundamentals, SSL/TLS concepts
- Firewall policy logic and rule evaluation order
- Palo Alto Panorama basics(device groups, templates)
- GlobalProtect user connectivity and troubleshooting workflows
- Prisma Access architecture(tenant, portal, gateway concepts)
- Experience using ServiceNow for incident and change management
- Basic experience with Cortex Data Lake queries and Splunk searches
- Ability to logically isolate issues across network, authentication, policy, and client layers
- Fact-based log analysis rather than assumption-driven troubleshooting
- Ability to escalate with clear reproduction conditions and findings
- Basic Linux knowledge (log concepts, basic command familiarity)
- Basic Windows knowledge related to certificates, proxies, and endpoint connectivity
- Clear and polite Japanese business communication (email, chat, meetings)
- Ability to explain incidents, changes, and limitations in a structured manner
- Strong sense of operational responsibility and risk awareness
- Calm, professional behavior during incidents and service disruptions
- Ability to maintain accurate records and explain past actions when required
- Bachelor's degree required
- Japanese: Native-level proficiency
- English: Business-level proficiency
Desired Qualifications
- Palo Alto Networks: PCCSA, PCNSA
- Security / Governance: CISSP, CISM, CISA
- ITIL Foundation
- Certifications are not mandatory; equivalent hands-on experience and security mindset are acceptable
- Knowledge of authentication protocols (SAML, LDAP, RADIUS)
- Cloud fundamentals (Azure / AWS basics)
- Basic scripting (Python / PowerShell) for operational efficiency
- Exposure to traffic analysis tools, packet captures, or firewall audit
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