LB Network Security Senior Specialist

NTT DATA, Inc.; Bengaluru; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

NTT DATA seeks a LB Network Security Senior Specialist to join our Bengaluru-based team. You will lead DDI administration, automation, and support across on-prem, hybrid, and cloud environments, ensuring reliable IP allocation, DNS resolution, DHCP services, and IPAM alignment with policies.

In addition, you will configure and optimize load balancers (F5 BIG-IP, Citrix ADC, HAProxy/NGINX), monitor health, manage SSL offloading, and troubleshoot connectivity to keep critical applications

Qualifications

• Experience administering enterprise DDI platforms across on-prem, hybrid and cloud.
• Proficiency with DNS, DHCP and IPAM services and related tooling.
• Experience with network automation and scripting to streamline provisioning.
• Familiarity with multi-cloud environments and DNS/DHCP troubleshooting.

Responsibilities

• Administer, automate, and support the enterprise DDI platform (DNS/DHCP/IPAM).
• Manage IP blocks, subnets, DHCP scopes, reservations and DNS zones.
• Monitor IP address usage, plan IPv4/IPv6 space, and maintain inventory.
• Configure and troubleshoot DNS records, zones, and policies; DHCP failover.
• Support Microsoft DNS/DHCP, ISC/Kea, BIND, and cloud DNS services.
• Configure and manage load balancers (F5 BIG-IP, Citrix ADC, HAProxy/NGINX).
• Ensure service reliability and performance of applications across environments.

Skills

DDI Administration

DNS & DHCP

IPAM

Automation & Scripting

Network Security

Cloud & Multi-cloud

Tools

F5 BIG-IP

Citrix ADC

HAProxy

NGINX

BIND/ISC/Kea

Job description

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 LB Network Security Senior Specialist to join our team in Bengaluru, Karnātaka (IN-KA), India (IN).

DDI

Responsible for the administration, automation, and support of the enterprise DDI (DNS, DHCP, and IP Address Management) platform using CygnaLabs IPControl, ensuring reliable IP address allocation, DNS resolution, DHCP services, network automation, and compliance across on-premises, hybrid, and cloud environments. Key responsibilities include managing and maintaining the IPControl infrastructure; administering enterprise DNS, DHCP, and IPAM services; creating and managing IP address blocks, subnets, DHCP scopes, reservations, and DNS zones; monitoring DHCP pool utilization and IP address consumption; planning and allocating IPv4 and IPv6 address space; maintaining accurate IP inventory and lifecycle management; performing subnet provisioning, reclamation, and capacity forecasting; supporting multi-cloud environments; configuring and troubleshooting DNS records, zones, and policies; managing DHCP failover and lease monitoring; supporting Microsoft DNS/DHCP, ISC/Kea, BIND, and cloud DNS services; resolving production incidents affecting DNS and DHCP operations; and leveraging automation tools, APIs, and scripting to streamline network provisioning, improve operational efficiency, and ensure service reliability.

Load Balancer

ManagementConfigure and manage load balancers such as:F5 BIG-IP (LTM/GTM)Citrix ADC (NetScaler)HAProxy / NGINX (if applicable)Implement L4/L7 load balancingConfigure:Virtual serversPools and health monitorsSSL offloading and certificatesOptimize traffic distribution and application performanceTroubleshoot load balancing and application connectivity issues

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.

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.