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NTT Data

Global IT services and consulting provider.

Network Security Specialist Advisor NAC

Security Engineering & ArchitectureUpdated on Nov 14
Full-timeNoida, Uttar Pradesh, IndiaNo salary listedIn-person

About the Job

Requirements

  • Experience in authentication, authorization, and accounting (AAA), network access control (NAC), and troubleshooting.
  • Strong background administering, maintaining, and upgrading Cisco Identity Services Engine (ISE) solutions.
  • Deep understanding of network security concepts, AAA protocols, endpoint profiling, posture assessments, bring-your-own-device (BYOD), guest access, pxGrid, and Cisco Digital Network Architecture Center (DNAC) integration with ISE and NAC technologies.

Responsibilities

  • Collaborate with infrastructure and security teams to design, implement, and customize Cisco ISE solutions and integrate third-party solutions to support security, business, and regulatory requirements.
  • Review and configure RADIUS and TACACS+ authentication, authorization, and accounting protocols on Cisco ISE for secure network access, applying industry best practices to reduce attack surfaces.
  • Develop and maintain endpoint profiling policies to classify and manage network-connected devices based on their characteristics.
  • Deploy and manage NAC solutions using Cisco ISE to enforce security policies, monitor network access, and ensure compliance.
  • Define and manage access-control policies, posture assessments, and identity-based access controls within Cisco ISE.
  • Collaborate with network, security, and IT teams to integrate Cisco ISE with security solutions such as SIEM and log management, identity providers, and network infrastructure components.
  • Diagnose and resolve complex issues involving Cisco ISE configurations, authentication failures, load balancers, licensing, and network access.
  • Maintain documentation of Cisco ISE configurations, policies, and procedures; develop methods and procedures aligned with change-management best practices; and provide training and knowledge transfer to team members.
  • Plan and execute upgrades, patches, and maintenance for Cisco ISE deployments; escalate and troubleshoot identified bugs with Cisco TAC and identify potential workarounds.
  • Collaborate with network engineers, security teams, and IT stakeholders to integrate Cisco ISE with security solutions, applications, and network infrastructure components.

Desired Qualifications

  • Development experience with Java, J2EE, JSP, XPRESS, and XML.
  • More than eight years of experience with other identity and access management technologies.

About the Company

NTT Data

Global IT services and consulting provider.

NTT DATA is a global IT and business services provider that helps organizations run and transform their technology and operations. It delivers consulting, industry solutions, cloud migration, cybersecurity, data analytics, and managed services to modernize systems and processes. It differentiates itself through its large scale, deep sector expertise in banking, healthcare, manufacturing, public sector, and automotive, and its broad ecosystem of partners with Microsoft, SAP, AWS, and Salesforce. Its goal is to help large enterprises digitally transform and optimize operations at scale using cloud-native approaches and secure IT environments.

Company size
10,001+
Company stage
IPO
Headquarters
Tokyo, Japan
Founded
1988

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