[Hiring] Network Security Advisor @NTT DATA Services

Role Description

The Network Senior Specialist Advisor is responsible for the daily operations and maintenance of firewall, Prisma, F5, and routing and switching environments across multiple customer infrastructures. This role primarily supports network security products from leading vendors such as Palo Alto, Cisco, and F5. The advisor will design, validate, and troubleshoot network traffic flows, security implementations, and configurations to ensure stable and secure operations.

Network Services include the ongoing management and support of customers’ network and security environments. The successful candidate will independently troubleshoot firewall and network traffic issues, maintain accurate and up-to-date documentation for network and security platforms, and support operational processes. The role requires the ability to work independently, resolve complex issues with minimal client input, and appropriately escalate matters when solutions are not immediately apparent.

Qualifications

• Highly experienced Network and Security Architect with 12+ years of hands-on network troubleshooting experience, including at least 5 years in network and security administration
• Extensive hands-on experience with Palo Alto Firewalls, Prisma Access / Prisma SASE, Cisco routing and switching, F5, SD-WAN, and AWS networking
• Strong expertise in routing protocols including EIGRP, BGP, along with hands-on experience with switching technologies
• CCIE (Routing & Switching) & PCNSE certification
• Proven ability to analyze complex technical issues and design optimal, scalable solutions
• Deep understanding of Palo Alto architecture, including templates, stacks, Global Protect, and advanced troubleshooting using packet captures and debugs
• Network design experience is a strong advantage

Requirements

• Act as a Subject Matter Expert (SME), providing advanced technical escalation support to L2/L3 engineers
• Deliver end-to-end operational support for enterprise Network and Security environments across multiple customers
• Troubleshoot and resolve complex issues related to Palo Alto Firewalls, Prisma/GlobalProtect, Routing & Switching, F5 and associated network traffic flows
• Perform advanced troubleshooting using packet captures, logs, and debugs on Palo Alto firewalls
• Write custom queries and generate operational and security reports using Palo Alto reporting tools
• Support daily steady-state operations, including request fulfillment, change management, and participation in weekly on-call rotations
• Conduct weekly and monthly health checks across all supported network security platforms
• Perform system maintenance activities, including upgrades, patching, and configuration updates
• Assist in firewall rule set reviews to enhance customers’ overall security posture and compliance
• Detect, investigate, and respond to security incidents; create customer tickets and manage issues through resolution and closure
• Develop and provide clear resolution and remediation plans for device, service, and security issues
• Ensure compliance with Service Level Agreements (SLAs), operational standards, and ITIL best practices
• Maintain accurate, current documentation for systems, configurations, procedures, and operational activities
• Proactively recommend service, process, and technical improvements to optimize the Network Security and Firewall teams

Benefits

• Flexible work arrangements, including remote or hybrid options
• Access to a robust ecosystem of innovation centers and established partners
• Commitment to professional development and continuous improvement