Network Security Engineer

About the Company :

Headquartered in California, U.S.A., GSPANN provides consulting and IT services to global clients. We help clients transform how they deliver business value by helping them optimize their IT capabilities, practices, and operations with our experience in retail, high-technology, and manufacturing. With five global delivery centers and 1900+ employees, we provide the intimacy of a boutique consultancy with the capabilities of a large IT services firm.

Role: Network Security Engineer

Experience: 10+ Years

Work Location: Gurugram

We are seeking a highly skilled Network Security Engineer with strong experience in LAN & WAN Security with Cisco Identity Services Engine (ISE), and DDI Infoblox's. The ideal candidate will be responsible for designing, implementing, managing, and troubleshooting secure and efficient enterprise networks while ensuring compliance with security policies.

Key Responsibilities:

• DDI Infoblox

Deploy, configure, and manage Infoblox DDI solutions (DNS, DHCP, IPAM).

Troubleshoot advanced DNS/DHCP/GRID issues and ensure service availability.

Implement security features (DNS Firewall, RPZ, Threat Protection).

Perform IPAM administration, capacity planning, and integration with network tools.

Handle L3 escalations, root cause analysis, and automation tasks.

Collaborate with network/security teams for DDI design and policy enforcement.

• Cisco ISE-NAC

Network Access Control (Cisco-ISE)

Deploy, configure, and manage Cisco ISE for NAC solutions.

Implement authentication/authorization policies (802.1x, MAB, posture).

Troubleshoot complex ISE, RADIUS, TACACS+ issues.

Integrate ISE with AD, PKI, Firewalls, WLC, and switches.

Support network access security, profiling, BYOD, guest access.

Handle escalations and perform root cause analysis.

• Security Compliance & Incident Response

Closure of vulnerability and security audits in sync with security Team.

Respond to and investigate network security incidents.

Ensure compliance with security frameworks and regulatory requirements.

• Collaboration & Documentation

Work closely with infrastructure, security, and application teams to deliver secure network

solutions.

Create and maintain technical documentation, network diagrams, and standard operating

procedures

Technical Expertise in:

• Cisco ISE: Policy configuration, profiling, BYOD, posture validation.
• Strong knowledge of NAC design, policies, and troubleshooting.
• Expertise in AAA, 802.1x, certificates, TrustSec/SXP.
• Strong expertise in DNS, DHCP, IPAM, and GRID architecture.
• Knowledge of DNSSEC, IPv6, Anycast, and redundancy models.
• Minimum 10-15 years of enterprise network on 7+ years of hands-on experience in enterprise network security and managing team

Relevant certifications preferred:

Cisco: Infoblox NIOS certifications / CCNP / equivalent preferred

CCNP Security

• Excellent troubleshooting and problem-solving skills.
• Strong written and verbal communication abilities.

Why choose GSPANN

We GSPANNians are at the heart of the technology that we pioneer. We do not service our customers, we co-create.

With the passion to explore solutions to the most challenging business problems, we support and mentor the technologist in everyone who is a part of our team. This translates into innovations that are path-breaking and inspirational for the marquee clients, we co-create a digital future with.

GSPANN is a work environment where you are constantly encouraged to sharpen your abilities and shape your growth path, We support you to become the best version of yourself by feeding your curiosity, providing a nurturing environment, and giving ample opportunities to take ownership, experiment, learn and succeed.

We're a close-knit family of more than 1400 people that supports one another and celebrates successes, big or small. We work together, socialize together, and actively serve the communities we live in.

We invite you to carry forward the baton of innovation in technology with us.

At GSPANN, we do not service. We Co-create.

Discover your inner technologist - Explore and expand the boundaries of tech innovation without the fear of failure.

Accelerate your learning - Shape your career while scripting the future of tech. Seize the ample learning opportunities to grow at a rapid pace

Feel included - At GSPANN, everyone is welcome. Age, gender, culture, and nationality do not matter here, what matters is YOU

Inspire and Be Inspired - When you work with the experts, you raise your game. At GSPANN, you're in the company of marquee clients and extremely talented colleagues

Enjoy Life - We love to celebrate milestones and victories, big or small. Ever so often, we come together as one large GSPANN family

Give Back - Together, we serve communities. We take steps, small and large so we can do good for the environment, weaving in sustainability and social change in our endeavors

We invite you to carry forward the baton of innovation in technology with us.

Let's Co-create.