L3 Network Engineer

Posted 9 Days Ago
Be an Early Applicant
Chennai, Tamil Nadu, IND
In-Office
Senior level
HR Tech • Professional Services
The Role
Manage enterprise network infrastructure and lead L1/L2 engineers in operational activities. Support Cisco, Aruba, Ruckus, wireless, routing, switching, firewall, authentication, and network management environments. Perform advanced troubleshooting, upgrades, change management, reporting, firewall reviews, and ITIL processes while maintaining factory network uptime. Coordinate escalations with internal teams and vendors and support information security initiatives.
Summary Generated by Built In
Key Responsibilities:
  • Manage and maintain enterprise network infrastructure operations
  • Lead and coordinate L1 and L2 engineers for day-to-day operational activities
  • Implement and support wireless infrastructure solutions (Aruba, Cisco, Ruckus)
  • Handle advanced troubleshooting for routing, switching, wireless, and firewall-related issues
  • Manage routing protocols including BGP, OSPF, EIGRP, and HSRP
  • Configure and troubleshoot VLAN, VRF, VXLAN, VPN, VPC, VDC, and Port Channels
  • Support Cisco SDA, DNA Center, Cisco Prime, NCM, and IPAM environments
  • Manage Cisco ISE, AD integration, wired/wireless authentication, and guest portal configurations
  • Configure and troubleshoot Aruba ClearPass and OnGuard solutions
  • Perform IOS upgrades, firmware updates, and change management activities
  • Ensure compliance with ITIL processes including incident, change, and problem management
  • Prepare weekly/monthly operational reports, SLA reports, inventory reports, and firewall reports
  • Conduct firewall rule reviews, security baseline reviews, and support information security initiatives
  • Coordinate with internal teams and vendors for critical network issues and escalations
  • Ensure uptime and operational stability across factory network environments

Required Skills & Qualifications:
  • 7+ years of experience in enterprise networking and infrastructure operations
  • CCNP Certification is mandatory
  • CCNA Certification required
  • Strong hands-on experience in Cisco routing, switching, and security technologies
  • Experience with Aruba Wi-Fi, ClearPass, and Cisco ISE
  • Strong knowledge of BGP, OSPF, EIGRP, HSRP, VLAN, VRF, VXLAN, VPN technologies
  • Experience with Cisco SDA, DNA Center, Cisco Prime, and enterprise wireless infrastructure
  • Good understanding of ITIL processes and NOC operations
  • Strong troubleshooting and escalation handling capabilities
  • Experience in manufacturing industry environments will be an added advantage
  • Strong leadership, coordination, and reporting skills

Preferred Skills:
  • Experience with Fortinet firewall technologies
  • Exposure to enterprise cybersecurity practices
  • Knowledge of automation and scripting tools
  • Experience handling large-scale enterprise/manufacturing network environments

Skills Required

  • 7+ years of experience in enterprise networking and infrastructure operations
  • CCNP Certification
  • CCNA Certification
  • Hands-on experience with Cisco routing, switching, and security technologies
  • Experience with Aruba Wi-Fi, ClearPass, and Cisco ISE
  • Knowledge of BGP, OSPF, EIGRP, HSRP, VLAN, VRF, VXLAN, and VPN technologies
  • Experience with Cisco SDA, DNA Center, Cisco Prime, and enterprise wireless infrastructure
  • Understanding of ITIL processes and NOC operations
  • Strong troubleshooting and escalation handling capabilities
  • Leadership, coordination, and reporting skills
  • Experience with Fortinet firewall technologies
  • Exposure to enterprise cybersecurity practices
  • Knowledge of automation and scripting tools
  • Experience handling large-scale enterprise or manufacturing network environments
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The Company
50 Employees
Year Founded: 2004

What We Do

Cynosure Corporate Solutions is a human capital services company focused on helping clients align their people strategy with business goals. Its offerings include executive search, recruitment, training, temporary staffing, statutory compliance, and other HR-aligned services. The company says it works to understand client objectives and connect human-resource planning with those objectives, supporting organizations’ workforce needs through tailored talent and employment solutions.

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