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

Tata Consultancy Services; Tamil Nadu; On-site; INR 1,200,000 - 2,400,000; Full time

Job summary

Tata Consultancy Services in Chennai, India seeks a Network Architect L3 to lead the architecture, design, and strategic roadmap for Cisco Catalyst SD‑WAN or Wireless solutions. Role requires 6–13 years of experience in enterprise LAN/WAN/WLAN architectures and strong DNAC/ISE expertise.

You will drive architecture governance, security alignment (Zero Trust), and end-to-end network integration across campus and WAN, guiding SD‑WAN transformations and ensuring high availability and scalable

Qualifications

• Strong hands-on and architecture experience with Cisco Catalyst SD-WAN or Cisco Wireless (one mandatory)
• Proven ability to define and govern LAN/WAN/WLAN enterprise architectures using Cisco Catalyst switching
• Deep knowledge of Cisco DNA Center (Automation/Assurance/Analytics) and Cisco ISE (Identity, Access Control, Segmentation)

Responsibilities

• Architect network strategy and roadmaps for Cisco Catalyst SD-WAN or Wireless solutions (one mandatory; both preferred)
• Define enterprise-grade LAN, WAN, and WLAN architectures using Cisco Catalyst switches
• Lead DNAC integration for automation, assurance, analytics, and proactive risk remediation
• Design segmentation, QoS, and security aligned with Zero Trust principles
• Provide governance for HLD/LLD reviews and guide engineering teams through implementation

Skills

Cisco Catalyst SD-WAN

Cisco Wireless

Cisco DNA Center

Cisco ISE

Zero Trust

LAN/WAN/WLAN

Routing & Switching

Job description

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

Years of Experience - 6 to 13 years

Location - Chennai

• Key Responsibilities
• :Architecture & Strateg
• 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
• .Cisco DNAC (Automation, Assurance, Analytics
• )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
• .Cisco ISE & Zero Trust Segmentatio
• 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
• .Transformation Leadership & Design Governanc
• eProvide technical leadership during SD‑WAN, 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 RCA‑based architectural improvements
• .Collaborate with security, cloud, and application teams for end‑to‑end network integration
• .Innovation & Continuous Improvemen
• 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)
• .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 principle
• 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