Sr. Network SME

Zensar Technologies; Maharashtra; On-site; INR 1,800,000 - 2,400,000; Full time

Job summary

Zensar Technologies invites a Sr. Network SME to join our team and engineer scalable LAN/WAN, SD-WAN, and data center networks. You will manage complex routing (BGP/OSPF/EIGRP) with MPLS, implement robust security using Palo Alto platforms, and drive multi-site deployments with ZIA and ZPA.

You will mentor engineers and lead critical IT projects, ensuring high availability across global environments. You will also collaborate with cross-functional teams, handle on-call escalations, and sustain

Qualifications

• Requires advanced network architecture and design experience across LAN/WAN, SD-WAN, and data centers.
• Proven expertise in multi-protocol routing (BGP/OSPF/EIGRP) with MPLS and multicast.
• Strong background in Palo Alto security, NGFW tuning, and ZIA/ZPA/ZCCSE environments.

Responsibilities

• Architect and deploy scalable, highly available networks and data center infrastructures.
• Lead the architecture, configuration, and optimization of ZIA, ZPA, ZCC, and related security services.
• Coordinate incident resolution and perform packet analysis (Wireshark) to ensure uptime.
• Mentor junior engineers and drive cross-functional IT/cloud migration projects.
• Maintain certification-driven expertise and align with client security standards.

Skills

Network architecture

Routing protocols

Network security

Zscaler ZIA/ZPA

Incident troubleshooting

Education

CCNP Enterprise

CCIE

PCNSE

ZCCSE

Tools

Wireshark

Palo Alto Panorama

NGFW management

Job description

• 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.
• Lead the architecture, configuration, and optimization of ZIA, ZPA, Zscaler Client Connector (ZCC), and Branch Connector environments.
• Lead the resolution of critical incidents, isolating complex Layer 2/3 faults and performing packet analysis (Wireshark) to maintain maximum uptime.
• 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.
  

Job Description

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.
  

Routine Work

• 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

Responsibilities

Sr. Network SME

Qualifications

• 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.
  

About Us

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.

Part of the $4.8 billion RPG Group, we’re a community of 10,000+ innovators across 30+ global locations, including Milpitas, Seattle, Princeton, Cape Town, London, Zurich, Singapore, and Mexico City. Explore Life at Zensar and join us to Grow. Own. Achieve. Learn. to be the best version of yourself.

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.