Senior Network Engineer IT Operations Infrastructure

Purpose of Role:

Provide L3 ownership for network infrastructure, including incident escalations, troubleshooting, routing, switching, securityhardeningand firmware upgrades.

Key Responsibilities:
L3 troubleshooting for Cisco Fortinet based networks, prepare RCA for major incidents, supportservice restoration.
VLAN, routing (OSPF/BGP/EIGRP),firewall(Fortinet Policy RuleMgmt)and VPN (IPSec / SSL) administration.
Security:firewallrule reviews, segmentation, vulnerabilityremediationand PT remediation.
Upgrades migrations: perform device firmware upgrades (IOS, NX-OS), network migration activities, and technology refresh projects.
Monitoring: review escalations from L1 monitoring tools (e.g.SolarWinds), perform network eventanalysisand capacity trend forecasting.
Documentation:maintainconfiguration documents, update HLD/LLD and operational runbooks/SOP.





Required Experience Skills:
58 years of Cisco switching/routing and Fortinetfirewalladministration in enterprise networks.
Solid knowledge of network security, VPN technologies, QoS,firewallmgmtand MPLS architectures.
Proficiencywith network monitoring and trending tools; experience with RCA SLA compliance.

Preferred Certifications Qualifications:
CCNA (minimum), ideally CCNP (ENARSI, DC)
Fortinet NSE (levels 47)
ITIL Foundation

Competencies:
Technical ownership and accountability
Solid communicationand documentation skills
Ability to mentor junior staff
Analytical thinking and decision-making

Reporting Relationships:

Reports to Network Team Lead; coordinates with Security and Monitoring teams.

📌 Assistant Manager It Operations & Infrastructure Chennai
🏢 Tata Communications
📍 Chennai