TymblHub

© 2026 TymblHub

Network Lead- SME

3i Infotech
Posted on
3i Infotech logo

Experience
13 - 20 yrs
Salary (CTC)
₹20L - ₹25L
Job Location
Chennai, India
Vacancy
1
Designation
Network Lead
Job Type
Not specified

Job Description

Role & responsibilities



Preferred candidate profile


We are seeking a highly experienced and technically strong Network Lead to manage enterprise network operations within the Global Command Center (GCC). The ideal candidate should possess deep hands-on expertise in network infrastructure, routing, switching, firewalls, firmware upgrades, OS patching, security compliance, incident management, and operational governance across multi-customer environments.

The candidate will be responsible for leading network operations, handling critical incidents and escalations, driving infrastructure stability, ensuring security compliance, and coordinating with cross-functional teams for seamless execution of network changes and maintenance activities.

Key Responsibilities

  • Lead and manage Network Operations within the Global Command Center environment.
  • Monitor and support enterprise network infrastructure across multiple customer environments.
  • Handle critical incidents, major outages, escalations, and ensure timely resolution within SLA timelines.
  • Perform advanced troubleshooting for LAN, WAN, SD-WAN, VPN, Wireless, Internet, and Data Center network issues.
  • Perform firmware upgrades, OS patching, and lifecycle management for routers, switches, firewalls, and network security devices.
  • Manage configuration updates, backups, validation, and standardization across network infrastructure.
  • Conduct pre-upgrade and post-upgrade validation activities to ensure network stability and minimal downtime.
  • Perform L3 triage and troubleshooting for network-related incidents, patch failures, vulnerability findings, and performance issues.
  • Ensure security compliance by addressing vulnerabilities and implementing remediation recommendations.
  • Manage and support network security technologies including Firewalls, IDS/IPS, VPN, and NAC solutions.
  • Participate in Change Management activities including risk assessment, and  implementation planning.
  • Maintain proper documentation including SOPs, network diagrams, escalation matrices, and operational procedures.
  • Coordinate with Security, Infrastructure, Server, Cloud, and Application teams for successful execution of planned activities.
  • Drive Root Cause Analysis (RCA) and Problem Management activities for recurring incidents.
  • Mentor and guide L1/L2 engineers and conduct internal technical knowledge transfer sessions.
  • Prepare operational reports, dashboards, service review reports, and customer updates.
  • Ensure adherence to ITIL processes, security standards, and customer governance requirements.
  • Support DC/DR operations, business continuity activities, and critical maintenance windows.
  • Participate in on-call support and weekend maintenance activities whenever required.

Technical Skills Required

Networking Technologies

  • Strong expertise in: 
    • Routing & Switching
    • TCP/IP
    • VLAN, STP
    • OSPF, BGP, EIGRP
    • MPLS, SD-WAN
    • VPN Technologies
    • Wireless Networking
    • Load Balancers
    • DNS, DHCP, NAT

Security Technologies

  • Hands-on experience with: 
    • Cisco
    • Palo Alto
    • Fortinet / FortiGate
    • Cisco ASA
    • Check Point
    • IDS/IPS
    • Network Access Control (NAC)

Monitoring & Management Tools

  • ManageEngine
  • Zabbix
  • Site24x7
  • Vulnerability & Remediation Tools

Data Center & Cloud Exposure

  • Cisco Nexus switches
  • DC/DR Infrastructure
  • Azure / AWS Network Fundamentals

Required Skills

  • Strong hands-on experience in network OS upgrades, firmware patching, and configuration management.
  • Expertise in incident triage, troubleshooting, and performance optimization.
  • Strong understanding of enterprise network security and vulnerability remediation.
  • Experience in handling customer escalations and major incident management.
  • Excellent analytical, communication, and stakeholder management skills.
  • Strong leadership and team management capability.
  • Experience in 24x7 Global Command Center or Managed Services environments.
  • Good understanding of ITIL processes including Incident, Problem, and Change Management.
  • Ability to work under pressure during critical outages and maintenance activities.

Preferred Certifications

  • CCNA / CCNP / CCIE
  • Fortinet NSE Certifications
  • Palo Alto Certifications
  • ITIL Foundation Certification

Educational Qualification

  • Bachelors Degree in Engineering / Computer Science / Information Technology or equivalent.

Additional Expectations

  • Experience in managing enterprise and multi-customer network environments.
  • Strong focus on SLA adherence, operational excellence, and service improvements.
  • Ability to drive automation and process optimization initiatives.
  • Strong documentation and governance management skills.
  • Willingness to work in rotational shifts and support critical business operations.

Interested candidate please share resumes on rashmi.ghag@3i-infotech.com