Network Security Specialist Advisor_NAC

NTT America, Inc.; Dadri; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

NTT DATA in Noida, Uttar Pradesh is seeking a Network Security Specialist Advisor_NAC to design, implement, and manage Cisco ISE based NAC solutions. You will collaborate with infra and security teams to meet regulatory requirements and strengthen security posture.

The role emphasizes AAA configuration, endpoint profiling, policy management, and integration with SIEM and identity providers, with ongoing troubleshooting and training responsibilities.

Qualifications

• Experience with NAC and Cisco ISE deployments.
• Knowledge of RADIUS/TACACS+ authentication frameworks.
• Experience designing, implementing and troubleshooting network security solutions.

Responsibilities

• Design and implement Cisco ISE solutions with infra/security teams.
• Configure AAA protocols (RADIUS/TACACS+) on Cisco ISE.
• Develop and maintain endpoint profiling policies.
• Deploy and manage NAC using Cisco ISE and enforce policies.
• Define access control policies and posture checks within ISE.
• Integrate ISE with SIEM, identity providers and network components.
• Troubleshoot ISE configurations and authentication issues.
• Document configurations and provide training to teams.
• Plan upgrades/patches for ISE deployments and coordinate with Cisco TAC.

Skills

Authentication/Authorization

NAC

Cisco ISE

Endpoint profiling

Troubleshooting

Tools

Cisco ISE tooling

DNAC integration

Job description

Req ID: 393621

NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization,

We are currently seeking a Network Security Specialist Advisor_NAC to join our team in Noida, Uttar Pradesh (IN-UP), India (IN).

In this role, Candidate is expected with an experience in core areas such as Authentication, Authorization, and Accounting, NAC (Network Access Control), and troubleshooting. The ideal candidate will have a strong background in the administration, upkeep, and upgrade of Cisco ISE solutions and deep understanding of network security concepts, Authentication, Authorization, and Accounting protocols, endpoint profiling, posture assessments, BYOD, Guest, pxGrid, DNAC integration with ISE and network access control (NAC) technologies.

Responsibilities

• Design and Implementation: Collaborate with infra and security teams to design, implement and customize Cisco ISE solutions, integrate third party solutions to bolster the security posture of the organization and to meet, security business and regulatory requirements.




• AAA Configuration: Review and configure Authentication, Authorization, and Accounting protocols such as RADIUS and TACACS+ on Cisco ISE for secure network access. Ensure to leverage industry best practices to reduce the attack surface areas.




• Endpoint Profiling: Understand, develop, and maintain endpoint profiling policies to classify and manage devices accessing the network based on their characteristics.




• Network Access Control (NAC): Deploy and manage NAC solutions using Cisco ISE to enforce security policies, monitor network access, and ensure compliance.




• Policy Management: Define and manage access control policies, posture assessments, and identity-based access controls within Cisco ISE.




• Integration and Collaboration: Collaborate with network, security, and IT teams to integrate Cisco ISE with other security solutions (SIEM and log management), identity providers, and network infrastructure components.




• Troubleshooting and Support: Diagnose and resolve complex issues related to Cisco ISE configurations, authentication failures, load balancer, licensing, and network access problems.




• Documentation and Training: Maintain comprehensive documentation of Cisco ISE configurations, policies, and procedures. Develop method and procedures in alignment with Change management best practices and provide training and knowledge transfer to varied team members.




• Upgrade and Patch Management: Plan and execute upgrades, patches, and maintenance activities for Cisco ISE deployments to ensure system stability and security. Escalate and troubleshoot along with Cisco TAC for identified bugs and potential work arounds.




• Integration and Collaboration: Collaborate with network engineers, security teams, and IT stakeholders to integrate Cisco ISE with other security solutions, applications, and network infrastructure components.

Preferences:

Development experience with Java, J2EE, JSP, XPRESS, XML +8 years Experience with other Identity and Access Management technologies

About NTT DATA

NTT DATA is a $30 billion business and technology services leader, serving 75% of the Fortune Global 100. We are committed to accelerating client success and positively impacting society through responsible innovation. We are one of the world's leading AI and digital infrastructure providers, with unmatched capabilities in enterprise-scale AI, cloud, security, connectivity, data centers and application services. our consulting and Industry solutions help organizations and society move confidently and sustainably into the digital future. As a Global Top Employer, we have experts in more than 50 countries. We also offer clients access to a robust ecosystem of innovation centers as well as established and start-up partners. NTT DATA is a part of NTT Group, which invests over $3 billion each year in R&D.

Whenever possible, we hire locally to NTT DATA offices or client sites. This ensures we can provide timely and effective support tailored to each client’s needs. While many positions offer remote or hybrid work options, these arrangements are subject to change based on client requirements. For employees near an NTT DATA office or client site, in-office attendance may be required for meetings or events, depending on business needs. At NTT DATA, we are committed to staying flexible and meeting the evolving needs of both our clients and employees.

NTT DATA endeavors to make https://us.nttdata.com accessible to any and all users. If you would like to contact us regarding the accessibility of our website or need assistance completing the application process, please contact us at https://us.nttdata.com/en/contact-us . This contact information is for accommodation requests only and cannot be used to inquire about the status of applications. NTT DATA is an equal opportunity employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status. For our EEO Policy Statement, please click here (http://us.nttdata.com/en/compliance#eeos) . If you'd like more information on your EEO rights under the law, please click here (http://us.nttdata.com/en/compliance#know-your-rights) . For Pay Transparency information, please click here (http://us.nttdata.com/en/compliance#ppnp) .