Network Architects L3 - Control Tower [BIO] (Walk-in)

Tata Consultancy Services; Chennai District; On-site; INR 1,400,000 - 2,000,000; Full time

Job summary

Tata Consultancy Services is seeking a Network Architect L3 to drive the architecture and roadmap for Cisco-based WAN/LAN/WLAN solutions. The role requires hands-on design for Catalyst platforms and DNAC integration, with strong focus on security and Zero Trust.

You will lead enterprise network transformations, collaborate across security, cloud, and application teams, and guide engineering through rollout governance.

Qualifications

• Strong hands-on architecture with Cisco Catalyst SD-WAN or Cisco Wireless.
• Expertise in Cisco DNA Center for automation/analytics/assurance.
• Experience with Cisco ISE, 802.1X, policy enforcement, and segmentation.
• Understanding of Zero Trust concepts and security alignment.

Responsibilities

• Lead the architecture, design, and strategic roadmap for Cisco catalyst solutions (SD-WAN or Wireless).
• Define enterprise LAN/WAN/WLAN architectures using Cisco Catalyst platforms.
• Design scalable, resilient network solutions aligned with business, reliability, and security requirements.
• Establish guardrails to ensure compliance with enterprise and security standards.
• Architect and integrate Cisco DNA Center (DNAC) for network automation and assurance.
• Define policies for 802.1X, SG, TrustSec, Guest access, and Zero-Trust.
• Provide technical leadership during SD-WAN, wireless, and campus network transformations.
• Review HLD/LLD and guide engineering teams through rollout governance.
• Collaborate with security, cloud, and application teams for end-to-end network integration.
• Evaluate new Cisco technologies and lead modernization initiatives.
• Drive measurable improvements in performance, scalability, availability, and operational efficiency.

Skills

Catalyst SD-WAN

Cisco Wireless

DNA Center

ISE

802.1X

Segmentation

Zero Trust

Tools

DNAC

ISE

Job description

Role - Network Architects L3 - Control Tower [BIO] (Walk-in)

Years of Experience - 6 to 13 years

• Key Responsibilities
• yLead the architecture, design, and strategic roadmap for Cisco Catalyst SD‑WAN or Cisco Wireless solutions (either one mandatory; both preferred)
• .Define enterprise‑grade 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
• )Architect and integrate Cisco DNA Center (DNAC) for
• :Network automation and configuration standardizatio
• nAssurance/health monitoring and analytic
• sCompliance and lifecycle management (images, upgrades, patches
• )Define operational and architectural standards for leveraging DNAC insights for proactive risk remediation
• nDesign Cisco ISE–based identity, access control, and segmentation architectures
• .Define policies and architecture standards for
• :802.1X, SGT, TrustSec, Guest access, and Zero‑Trust framework
• sEstablish routing, segmentation, QoS, and security standards across LAN/WAN
• eProvide technical leadership during SD‑WAN, wireless, and campus network transformations
• .Review HLD/LLD and guide engineering teams through implementation and rollout governance
• .Collaborate with security, cloud, and application teams for end‑to‑end network integration
• tEvaluate new Cisco technologies and lead modernization initiatives
• .Drive measurable improvements in performance, scalability, availability, and operational efficiency
• .Required Skills & Experience (Must Have)
• :Strong hands‑on and architecture experience with Cisco Catalyst SD‑WAN OR Cisco Wireless (one mandatory)
• .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
• sSegmentation models and QoS standard
• sSecurity architecture alignment (Zero Trust principles
• )Good to Have (Preferred)
• :Both Cisco Catalyst SD‑WAN + Cisco Wireless architecture experience
• .SDA / fabric-based campus design exposure with DNAC + ISE integration
• .Working knowledge of enterprise security integrations and cross-domain architecture governance
• .ITIL/ITSM process exposure (incident/problem/chang
• eCertifications (Preferred / Nice to Have
• )Cisco certifications such as CCNP/CCIE (Enterprise/Wireless/Security) (preferred