Network Security Advisor

NTT
Karnataka
Workplace: RemoteFull timeFunction: CybersecurityExperience: 12+ yearsSkills: ["Independent problem-solving","Technical troubleshooting","Escalation support","Analysis","Documentation","Time management","Organizational skills"]

Own daily operations and maintenance of enterprise network security environments across multiple customer infrastructures. Manage and troubleshoot firewalls and routing/switching, supporting Palo Alto, Prisma (Prisma Access/GlobalProtect/Prisma SASE), Cisco, and F5. Act as an SME for escalations, perform advanced packet-capture/log/debug troubleshooting, write reporting queries, run health checks, handle change management, and respond to security incidents while maintaining SLAs and ITIL-aligned documentation.

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FursaFursa
NTT
NTT
5 months ago

Network Security Advisor

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Last checked: 8 hours agoStatus: Live

Job Summary

Own daily operations and maintenance of enterprise network security environments across multiple customer infrastructures. Manage and troubleshoot firewalls and routing/switching, supporting Palo Alto, Prisma (Prisma Access/GlobalProtect/Prisma SASE), Cisco, and F5. Act as an SME for escalations, perform advanced packet-capture/log/debug troubleshooting, write reporting queries, run health checks, handle change management, and respond to security incidents while maintaining SLAs and ITIL-aligned documentation.
Location: Karnataka
Workplace: Remote
Employment Type: Full time
Job Function: Cybersecurity
Seniority: Mid level

Key Responsibilities

  • •Provide daily operational support and maintenance for firewall, Prisma, F5, and routing/switching environments across multiple customer infrastructures.
  • •Independently troubleshoot firewall and network traffic issues, using packet captures, logs, and debugs.
  • •Act as an SME for advanced technical escalation support to L2/L3 engineers.
  • •Perform system maintenance including upgrades, patching, and configuration updates; run weekly/monthly health checks.
  • •Support incident detection, investigation, and response; manage customer tickets and ensure resolution/closure in line with SLAs and documentation needs.

Key Requirements

  • •12+ years of hands-on experience in network and security administration, including at least 5 years in network/security administration.
  • •Extensive experience with Palo Alto firewalls and Prisma Access/Prisma SASE, plus Cisco routing and switching and F5.
  • •Strong routing protocol expertise, including EIGRP and BGP, and hands-on switching experience.
  • •CCIE (Routing & Switching) and PCNSE certification.
  • •Ability to analyze complex issues and design scalable network security solutions, with strong independent execution in remote support contexts.
Experience:12+ yearsNetwork securityEnterprise networkingFirewallsSD-WAN
Skills:Independent problem-solvingTechnical troubleshootingEscalation supportAnalysisDocumentationTime managementOrganizational skills
Certifications:CCIE (Routing & Switching)PCNSE
Tech Stack:FirewallsPalo AltoPrisma AccessPrisma SASEPrismaGlobalProtectCiscoF5SD-WANAWSRouting protocolsEIGRPBGPPacket capturesLogsDebugsITILSLAs

Company Brief

NTT
Dimension Data, operating under NTT Ltd, provides managed IT services, cloud and data center solutions, networking, cybersecurity, and digital transformation services to enterprise customers worldwide.
Industry: Professional Services
Company Size: Enterprise (1,001+ employees)
Revenue: USD 1B+
Growth: Established Company
Valuation: Public Company (Market Cap in USD)
Headquarters: London, United Kingdom
Founded: 1983
WebsiteLinkedIn