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L3 Engineer

2 weeks ago

Bhubaneshwar, Odisha, India Omnilink Technology Full time ₹ 9,00,000 - ₹ 12,00,000 per year

WAN/LAN/WLANSTPFortinetCheck PointIDS/IPSWAFNACZero-TrustMicro-SegmentationThreat MitigationRCALoad BalancersNetwork SegmentationSolarWindsPRTGCisco DNAJuniper ContrailAruba AirWaveSIEMITILSDNSD-WANJuniperArubaDocumentation

Responsibilities

  • Act as L3 escalation for security incidents and troubleshooting
  • Design and optimize firewalls, VPN, IDS/IPS, NAC, and secure access solutions
  • Perform policy tuning, vulnerability remediation, and root cause analysis
  • Conduct security assessments and ensure compliance with standards
  • Mentor L1/L2 engineers and support security operations

Requirements

  • 5-8 years of network security experience (2+ years in L3 roles)
  • Strong expertise in firewalls (Palo Alto, Fortinet, Check Point, Cisco ASA/FTD) and VPN/IPS/WAF
  • Familiarity with network segmentation, zero-trust frameworks, and NAC solutions.
  • Solid understanding of TCP/IP, routing, segmentation, and threat mitigation
  • Certifications preferred: CISSP, CCNP Security, PCNSE, NSE4+
  • Strong analytical and problem-solving skills.
  • Excellent documentation, communication, and teamwork abilities.

Preferences

  • Experience with SDN/SD-WAN security and cloud security platforms (AWS, Azure, GCP)
  • Knowledge of scripting/automation (Python, Ansible) for operational efficiency
  • Exposure to zero-trust network architecture and micro-segmentation

Job Description for L3 Network Operation:

Responsibilities

  • Serve as L3 escalation for complex network incidents, performance issues, and outages
  • Troubleshoot and resolve advanced problems in routing, switching, wireless, and WAN/LAN environments
  • Perform root cause analysis (RCA) and develop permanent corrective actions
  • Optimize and maintain enterprise network infrastructure for high availability and security
  • Configure, test, and implement changes to network devices (routers, switches, firewalls, load balancers)
  • Collaborate with vendors on critical issues, patches, and hardware/software upgrades
  • Develop and update network documentation, SOPs, and knowledge base for L1/L2 teams
  • Monitor network performance and capacity, recommending improvements as needed
  • Ensure compliance with corporate network policies and standards
  • Mentor L1/L2 engineers to improve operational capability

Requirements

  • 5-8 years in network operations, with 2+ years at L3 escalation level
  • Strong expertise in routing protocols (BGP, OSPF, EIGRP), switching (VLAN, STP, VTP), and wireless networks
  • Proficiency in firewall, VPN, and network security concepts
  • Hands-on experience with network monitoring and management tools (SolarWinds, PRTG, Cisco DNA, Juniper Contrail, Aruba AirWave, etc.)
  • Certifications preferred: CCNP, JNCIP, PCNSE, or equivalent vendor certifications
  • Strong troubleshooting, analytical, and documentation skills
  • Excellent communication and vendor coordination experience

Preferences

  • Knowledge of SDN, SD-WAN, or automation tools (Python, Ansible)
  • Experience in multi-vendor environments (Cisco, Juniper, Aruba, Fortinet, etc.)
  • Familiarity with ITIL processes, ticketing, and change management workflows

Exposure to cloud networking (Azure, AWS, GCP) and hybrid infrastructures