Network Security Advisor

NTT DATA BUSINESS SOLUTIONS; Mumbai; On-site; INR 4,000,000 - 7,000,000; Full time

Job summary

NTT DATA BUSINESS SOLUTIONS in Mumbai seeks a Network Senior Specialist Advisor to oversee daily operations and maintenance of firewall, Prisma, F5, and routing/switching across customer infrastructures. You will design, validate, and troubleshoot traffic flows and security configurations to ensure stable operations, with a focus on documentation and incident response.

The role requires 12+ years in network and security administration, hands-on with Palo Alto, Prisma Access, F5 BIG-IP, Cisco

Qualifications

• 12+ years in Network and Security administration.
• Hands-on with Palo Alto, Prisma Access, F5, Cisco routing/switching, SD-WAN and AWS networking.
• Certifications such as CCIE Routing & Switching and PCNSE are highly valued.

Responsibilities

• Provide advanced escalation support to L2/L3 engineers.
• End-to-end operational support for enterprise network and security.
• Troubleshoot Palo Alto, Prisma, Routing/Switching, F5 and traffic flows.
• Perform packet captures, logs, and debugs on firewalls.
• Write queries and generate operational/security reports.
• Support daily operations, change management, and on-call rotations.
• Conduct regular health checks of platforms.
• Perform upgrades, patching, and configuration updates.
• Assist in firewall rule reviews for security posture.
• Detect, investigate, and respond to security incidents.

Skills

Network troubleshooting

Security architecture

Palo Alto expertise

CCIE Routing/Switching

Prisma Access/SASE

F5 BIG-IP

SD-WAN

AWS networking

Education

CCIE Routing & Switching certification

PCNSE certification

Tools

Palo Alto

Prisma Access

Prisma SASE

F5 BIG-IP

Panorama

Cisco routing/switching

AWS networking

Job description

Job Summary

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 customersnetwork 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 escalat matters when solutions are not immediately apparent.

Role Responsibilities

• 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 customersoverall 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

Key Skills Experience

• 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 exp 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

Professional Qualifications

• 12+ years of hands-on experience in Network and Security administration around Architecture, Design and operations
• Strong understanding of Palo Alto architecture, including templates and stack configurations
• Excellent time management and organizational skills, with the ability to manage multiple operational priorities effectively
• Familiarity with regulatory and compliance frameworks such as SOX, PCI, and HIPAA
• Proven ability to work independently in remote support environments and collaborate effectively across teams

Professional Attributes

• Excellent customer-facing communication skills with strong service orientation
• Strong time management skills with the ability to balance operational duties and continuous improvement initiatives
• Demonstrates high ethical standards, integrity, and adaptability to changing customer and business needs

Experience Requirement

• 12+ years of experience in managing LAN WAN Infrastructures
• 12+ yearsexperience in Routing Switching, F5 BIG IP LTM
• 12+ years of experience in Architecture and Design of Palo Alto FWs, Panorama
• 5+ years of experience in Prisma Access/ SASE