NTT DATA North America · 22 hours ago
Network Security Sr. Specialist Advisor
United States
Full-time
Remote
Senior Level, Lead/Staff
12+ years expNTT DATA North America is a leading business and technology services provider, and they are seeking a Network Security Sr. Specialist Advisor. The role involves overseeing daily operations and maintenance of network security environments, troubleshooting complex issues, and providing expert support across multiple customer infrastructures.
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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 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
Qualification
Required
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
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
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
12+ years of experience in managing LAN & WAN Infrastructures
12+ years' experience in Routing & Switching, F5 BIG IP LTM
12+ years of experience in Architecture and Design of Palo Alto FW's, Panorama
5+ years of experience in Prisma Access/ SASE
Company
NTT DATA North America
NTT DATA, Inc. is a trusted global innovator of business and technology services.
10001+ employees
H1B Sponsorship
NTT DATA North America has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (144)
2024 (182)
2023 (257)
2022 (871)
2021 (809)
2020 (1266)
Funding
Current Stage
Late StageLeadership Team
John Barr
Vice President - Insurance Strategy
Recent News
2025-12-05
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