Network Architects L3 - Control Tower

Tata Consultancy Services; Chennai District; On-site; INR 3,000,000 - 4,200,000; Full time

Job summary

Tata Consultancy Services is seeking an experienced Network Architect to lead the enterprise architecture for next-generation campus and WAN networking in Chennai, India. The role covers Cisco Catalyst SDWAN or Cisco Wireless, with emphasis on DNAC automation, ISE-based identity, and zero-trust segmentation.

The candidate will define enterprise LAN/WAN/WLAN architectures, establish guardrails for security and compliance, and provide leadership during SDWAN and campus transformations.

Qualifications

• Strong hands-on and architecture experience with Cisco Catalyst SDWAN or Cisco Wireless.
• Proven experience defining LAN/WAN/WLAN enterprise architectures using Cisco Catalyst switching.
• Strong architecture capability in Cisco DNAC (automation/assurance/analytics).
• Strong design experience with Cisco ISE, including 802.1X, policy enforcement, guest access, and segmentation (SGT/TrustSec).
• Understanding of routing and campus design principles, segmentation models, and QoS standards.

Responsibilities

• Lead architecture, design, and strategic roadmap for Cisco Catalyst SDWAN or Cisco Wireless solutions (one mandatory; both preferred).
• Define enterprise-grade LAN, WAN, and WLAN architectures using Cisco Catalyst switching.
• Design scalable, resilient network solutions aligned with business, reliability, and security requirements.
• Establish architecture guardrails to ensure compliance with enterprise, regulatory, and security standards.
• Architect and integrate Cisco DNA Center for automation, assurance, and analytics; define standards for DNAC insights and lifecycle management.
• Design Cisco ISE-based identity, access control, and segmentation architectures with 802.1X, TrustSec, and guest access policy.
• Provide technical leadership during SDWAN, wireless, and campus network transformations; review HLD/LLD and guide rollout governance.

Skills

Cisco Catalyst SDWAN

Cisco Wireless

Cisco DNAC

Cisco ISE

802.1X

TrustSec

Zero Trust

LAN/WAN/WLAN architectures

Architecture leadership

RCAs & design governance

Job description

Role & responsibilities

Network Architect (Cisco Catalyst SDWAN / Cisco Wireless)

Total experience-6 to1 2 years

Mode of interview- Walk-in interview

Location- Tata Consultancy Services - Kumaran Nagar, 415/21-24, TNHB Main Rd, Chennai, Tamil Nadu 600119

Jobdescription:

We are seeking an experienced Network Architect to lead the enterprise architecture, design standards, and strategic roadmap for nextgeneration campus and WAN networking. The role will own endtoend architecture across Cisco Catalyst Switching (LAN), Cisco Catalyst SDWAN or Cisco Wireless (one mandatory; both preferred), and drive automation/assurance through Cisco DNA Center (DNAC) alongside identity and segmentation architectures using Cisco ISE / TrustSec.

Architecture & Strategy

• Lead the architecture, design, and strategic roadmap for Cisco Catalyst SDWAN or Cisco Wireless solutions (either one mandatory; both preferred).
• Define enterprisegrade LAN, WAN, and WLAN architectures using Cisco Catalyst switching platforms.
• Design scalable, resilient network solutions aligned with business, reliability, and security requirements.
• Establish architecture guardrails to ensure compliance with enterprise, regulatory, and security standards.

Cisco DNAC (Automation, Assurance, Analytics)

• Architect and integrate Cisco DNA Center (DNAC) for:
• Network automation and configuration standardization
• Assurance/health monitoring and analytics
• Compliance and lifecycle management (images, upgrades, patches)
• Define operational and architectural standards for leveraging DNAC insights for proactive risk remediation.

Cisco ISE & Zero Trust Segmentation

• Design Cisco ISEbased identity, access control, and segmentation architectures.
• Define policies and architecture standards for:
• 802.1X, SGT, TrustSec, Guest access, and ZeroTrust frameworks
• Establish routing, segmentation, QoS, and security standards across LAN/WAN.

Transformation Leadership & Design Governance

• Provide technical leadership during SDWAN, wireless, and campus network transformations.
• Review HLD/LLD and guide engineering teams through implementation and rollout governance.
• Act as escalation point for complex design/integration issues; drive RCAbased architectural improvements.
• Collaborate with security, cloud, and application teams for endtoend network integration.

Innovation & Continuous Improvement

• Evaluate new Cisco technologies and lead modernization initiatives.
• Drive measurable improvements in performance, scalability, availability, and operational efficiency.

Required Skills & Experience (Must Have)

• Strong handson and architecture experience with Cisco Catalyst SDWAN OR Cisco Wireless (one mandatory).
• Proven experience defining LAN/WAN/WLAN enterprise architectures using Cisco Catalyst switching.
• Strong architecture capability in Cisco DNAC (automation/assurance/analytics)
• Strong design experience with Cisco ISE, including 802.1X, policy enforcement, guest access, and segmentation (SGT/TrustSec)
• Strong understanding of:
• Routing & campus design principles
• Segmentation models and QoS standards