Sr. Network SME

Sr. Network SME

Technical Requirements

• Network Architecture & Design:
• Architect and deploy scalable, highly available LAN/WAN, SD-WAN, and Data Center networks (Nexus, Catalyst, ACI).
• Advanced Routing & Switching:
• Manage complex, multi-protocol routing environments utilizing BGP, OSPF, and EIGRP, alongside MPLS and Multicast architectures. Expert-level understanding of TCP/IP, OSI Model, Spanning Tree, QoS, and high-availability protocols (HSRP/VRRP). Proficiency with Cisco platforms including Catalyst 9000 switches, Nexus 9k/7k/5k switches, and ASR routers.
• Network Security:
• Architect, design, and implement high-availability network solutions integrating Palo Alto hardware and virtual appliances. Oversee deployment and tuning of NGFW, App-ID, User-ID, Threat Prevention, WildFire, and SSL/TLS Decryption. Manage multi-site deployments centrally using Palo Alto Panorama.
• Zscaler Expertise:
• Lead the architecture, configuration, and optimization of ZIA, ZPA, Zscaler Client Connector (ZCC), and Branch Connector environments.
• Tier-3 Support & Troubleshooting:
• Lead the resolution of critical incidents, isolating complex Layer 2/3 faults and performing packet analysis (Wireshark) to maintain maximum uptime.
• Collaboration & Leadership:
• Act as a technical mentor to junior engineers and a subject matter expert during cross-functional IT, cloud migration, or data center consolidation projects.
• Certifications:
• CCNP Enterprise, or CCIE (Cisco Certified Internetwork Expert), Palo Alto Networks Certified Network Security Engineer (PCNSE), Zscaler Certified Cloud Security Engineer (ZCCSE) highly preferred.
  

• Patching network devices as per patch cadence.
• Visit various facilities within and outside India as and when required.
• Work with the core team on inventory and annual maintenance contract validation.
• Work closely with vendor and core team on the smooth running of monitoring tools
• Actively work on different projects assigned by client managers.
• Coordination with site leads for tracking progress on projects
• Work closely with teammates and stakeholders involved in the assigned projects
• Work closely with the service desk, end-user support and provide backend support
• Update in project tasks progress in tracking tools periodically
• Maintain all the documentation (Planning, operational standard work) related to the projects
• Facilitate knowledge/training to internal support team members
• Perform the Role of Product Owner and specialized operational support
• Involve in the new acquisition and migration projects
• On-call support to global service desk on critical escalation

• Design, implement, and support enterprise LAN/WAN, SD-WAN, and Data Center network infrastructure, including Cisco Catalyst, Nexus, ACI, Palo Alto, and Zscaler technologies, ensuring high availability and performance.
• Provide Tier-3 technical support for complex network and security incidents, perform root cause analysis, packet-level troubleshooting, and drive resolution of critical escalations within SLA timelines.
• Manage network security solutions including Palo Alto NGFW, Panorama, SSL Decryption, Threat Prevention, and Zscaler platforms, while ensuring compliance with organizational security standards.
• Lead network transformation, migration, and infrastructure projects, coordinate with vendors, site leads, and stakeholders, maintain project documentation, and track progress through project management tools.
• Perform operational activities such as network device patching, inventory and AMC validation, monitoring tool management, knowledge transfer sessions, and 24x7 on-call support for critical business operations.

• Certifications:
• CCNP Enterprise, or CCIE (Cisco Certified Internetwork Expert), Palo Alto Networks Certified Network Security Engineer (PCNSE), Zscaler Certified Cloud Security Engineer (ZCCSE) highly preferred.
  

At Zensar, we’re “experience-led everything”. We are committed to conceptualizing, designing, engineering, marketing, and managing digital solutions and experiences for over 130 leading enterprises. We are a company driven by a bold purpose: Together, we shape experiences for better futures. Whether for our clients, our people, or the world around us, this belief powers everything we do. At the heart of our culture is ONE with Client - a set of four core values that reflect who we are and how we work: One Zensar, Nurturing, Empowering, and Client Focus.

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We believe the best work happens when individuality is celebrated, growth is encouraged, and well-being is prioritized. We are an equal employment opportunity (EEO) and affirmative action employer, committed to creating an inclusive workplace. All qualified applicants will be considered without regard to race, creed, color, ancestry, religion, sex, national origin, citizenship, age, sexual orientation, gender identity, disability, marital status, family medical leave status, or protected veteran status.